TECHNICAL UNIVERSITY OF LIBERECFaculty of Mechanical EngineeringHálkova 6, 461 17 Liberec, Czech Republic

RESEARCH

ACTIVITY REPORT 2000

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TECHNICAL UNIVERSITY OF LIBEREC - FACULTY OF MECHANICALENGINEERING, Halkova 6, 46117 Liberec 1,Tel.: 048/5353221, Fax.: 048/5353535, http//www.fs.vslib.cz

Dean: Assoc. Prof. Ludvík Prášil, M.Sc., Ph.D.Telephone: +42 - 48 – 5353455E-Mail: ludvik.prasil@vslib.cz

Vicedeans: Assoc. Prof. Miroslav Malý, M.Sc., Ph.D.Assoc. Prof. Přemysl Pokorný, M.Sc., Ph.D.Telephone: +42 - 48 – 5353246

The Mechanical Engineering Faculty represents an individual high educational institution of Universitytype, having 11 departments of engineering science.The basic and applied research is within areas that represent the departments´ educational activities inaccredited study branches.Research activity in the science of Engineering technology aims at: study of thermal fields of moulds andcastings, their influence on character and quality of castings, research of structure and features of cast iron,research of resistance welding of coated metal sheets for deep drawing, study of coating metal materials,research of thin layers, development of composite materials, complex assessment of deep drawing ability ofmetal sheets and plastics manufacturing optimisation, monitoring of cutting process by acoustic emission,research of materials machinability and tool cutting ability.Research activity in the science of Machines and equipment design and applied mechanics aims at: fluidmechanics (turbulence, visualisation LDA, CTA anemometery), residual heat exploitation from wastemedia, mass and heat transfer, ecology of running features in mobile vehicles, analysis and synthesis ofmachine mechanisms, technology process of glass forming, optimisation of glass moulds, analysis ofvibration and noise of machines, crack mechanics, mechanics of oscillating systems, vibroisolation ofsystems and controlled dynamic systems etc.Research activity in the science of Manufacturing systems and automated control systems ofmanufacturing processes aims at: design of manufacturing system and its simulation, the machine toolsdrives, computer aided methods in engineering and modelling of static and dynamic processes, applicationon real data from industry.Research is supported by projects under national basics (GAČR, FRVŠ ČR, MŠMT),by international projects (ERASMUS, COPERNICUS, PHARE) and international co-operation projectswith other institutions. In research, development and project work there are important long-term openagreements and partial thematic agreements with industrial companies.

Research, development and activities of departments

KMP - Department of Mechanics and stress analysis

Head: Assoc. Prof. Rudolf VRZALA, M.Sc., Ph.D.Telephone: +42 - 48 – 5354107E-Mail: rudolf.vrzala@vslib.cz

Secretariat: Telephone: +42 - 48 – 5354104E-Mail: jana.koskova@vslib.czFax: +42 - 48 – 5105882

Fatigue calculations, optimisation of structures, dynamics and machines oscillations, dynamic balancing ofrotors, FEM applications, crack mechanics, vibroisolation of carriages, drivers chair and bed.Plasticity and fatigue calculation of anisotropic bodies and environment, and textile fibres bodies.Courses in IDEAS.

• Šír, M.: Estimation of Rigid Body Properties of Large Bodies Using Dynamic Test Facility,(Habilitation thesis), TU Liberec, 2000.The principle and a mathematical model of a new RBP measure method are given in the work. The method is based on themeasurement and evaluation of the forces in the constraints between the measured body and a supporting platform moving itselfin the 3D space with a reduced number of DOF motion.

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• Vrzala, R.: An Expert’s Statement on a Projekt No. EU 1762 IVM-VTM, 2000.The statement judges a final report “Cams and Cam Mechanisms Computational Methods and Production TechnologiesInnovation”. The report completely describes works done in the related areas at VUSIT Liberec and VUTS Liberec during 1997 –2000 period.

• Šklíba, J., Svoboda, R.: Some Problems of Hydraulic Damper Modeling, Colloquium Dynamics ofMachines 2000, Ústav termomechaniky AV, 2000, (pp 211-216), ISBN 80-85918-54-4.The paper is focused to an analysis of an influence of gas components in the liquid considered in a mathematical model of ahydraulic damper.

• Šklíba, J., Svoboda, R.: Pressure Distribution in a Hydraulic Damper, VIII-th InternationalConference on the Theory of Machines and Mechanisms, TU Liberec, 2000, (pp 723-728), ISBN 80-7083-388-2.A more realistic model of a hydraulic damper considering pressure gradient in valve supply channels was developed and used toan explanation of the hysteresis of the damper force.

• Šklíba, J., Loudová, J.: On a Next Possibility of the Accuracy of a Driver Seat Model, Inženýrskámechanika 2000, VUT Brno, 2000, (Vol. II, pp.121-126), ISBN 80-86246-05-1.There is an eccentrically loaded pneumatic spring built-in a driver-seat suspension mechanism. Loading force results in axial andtransversal forces and bending moment used for the spring properties calculation. Corresponding experiment was implementedand evaluated.

• Šklíba, J., Svoboda, R.: Hydraulic Damper with Electric Control, Mezinárodní konference"Diagnostika a aktivní řízení", VUT Brno, 2000, (pp 43-44), ISBN 80-214-1665-3.In the mathematical model of the analyzed controlled hydraulic daamper, equations for flow equilibrium above and under thepiston are extended and whole system is completed with force and moment equilibrium of the controlling member.

• Holý, S., Čalkovský, A., Jágrová, J., Vítek, K.: Influence of Stability Loss of Transversal CrossSection on Stress Distribution under Torsion, Workshop 2000, CTU in Prague, ČVUT Praha, 2000,(pp 300), ISBN 90-01-02229-3.The stress distribution in the cross section area with regards to the stability of the problem.

• Vítek, K., Jágrová, J., Holý, S.: Computational Models of Open Thin-Walled Rods, Workshop 2000,CTU in Prague, ČVUT Praha, 2000, (pp 309), ISBN 80-01-02229-3.Stress analysis and a suggestion of concrete solution of thin-walled rods with regard to their length is presented.

• Marvalová, B.: Prediction of Elastic Properties of Textile Reinforced Composites, Inženýrskámechanika 2000, Svratka,ČR, 2000, (Vol. II, pp 193-198), ISBN 80-86246-03-5.3D micromechanical model is developed for the elastic analysis of textile reinforced composites. Stresses in the representativevolumetric element are calculated by means of variational principle.

• Marvalová, B.: Computation of Micro-Stress Fields in Plain-Weave Fabric Composites,Konference TEXSCI 2000, TU Liberec, 2000, (pp 54-56), ISBN 80-7083-409-9.3D micromechanical model is developed for the elastic analysis of textile reinforced composites. Stresses in the representativevolumetric element are calculated by means of variational principle.

• Marvalová, B.: Determination of Effective Stiffness Tensor of Textile Reinforced Composites, 7-thAnnual International Conference of Composites Engineering, David Hui, University New Orleans,2000, (pp 593-594).3D micromechanical model is developed for the elastic analysis of textile reinforced composites. The model takes into accountthe effects of the complex geometry of reinforcement and different mechanical properties of each composite component.

• Svoboda, R., Šklíba, J.: Some Problems of Numerical Simulation of Hydraulic Damper, Výpočtovámechanika 2000, ZČU Plzeň, 2000, (pp 389-396), ISBN 80-7082-625-5.Discussed mathematical model of a hydraulic damper yields to the system of seven ODEs completed with nonlinear algebraicequations for flow coefficients. Because of numerical instability when solving model using standard integrating methods,methods for solution of stiff-systems were used with authentic results.

• Šklíba, J., Barbora, J., Cirkl, D.: Hydropneumatic Force Element with Parallel Hydraulic andPneumatic Dampers Arranged in One Unit., VII-th National Seminar with InternationalParticipation, Ústav termomechaniky AV, 2000, (pp 233-236), ISBN 80-85918-58-7.The paper presents a new type of the hydropneumatic element with the parallel arrangement of the hydraulic and pneumaticdumping. The first experimental results show that the increase of the hydraulic damping produces the increase of thehydropneumatic element stiffness.

• Loudová, J.: Dynamic Analysis of Driver-Seat Mechanism, Aplikovaná mechanika 2000, TULiberec, 2000, (pp 253-258), ISBN 80-7083-388-2.The work is a simplified introductory analysis to the problem of complex computational simulation of dynamic properties ofdriver-seats with elastic members.

• Loudová, J., Mevald, J.: Simulation of Driver-Seat Dynamic Processes, VIII-th InternationalConference on the Theory of Machines and Mechanisms, TU Liberec, 2000, (pp 395-400), ISBN 80-7083-418-8.This papers presents a dynamics analysis of a spring a driver's seat. The results of an analytic solution in FAMULUS arecompared with results of computer simulation in ADAMS.

• Mevald,J., Kolčava, L.: Simulated Analysis of Vibration in Machine with Dynamic VibrationAbsorbers, Proceedings of XXII-nd International Colloquium ASIS 2000, TU Ostrava, 2000, (pp 33-38), ISBN 80-85988-51-8.This paper shows one of the possibilities of the effector limitation of the vibration at the prototype machine.

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• Mevald, J., Fridrichová, L.: Bending Stiffness of 2D Textiles Specimens with Variable Width,Sborník STRUTEX, 7 Národní konference, TU Liberec, 2000, (pp 153-159), ISBN 80-7083-442-0.In this work, methods of bending stiffness evaluating of specimens with linear variable width on the machine THS are presented.

• Vrzala, R., Šír, M.: Instantaneous Center of Zero Acceleration in R-R-R Type Binary Group ofPlanar Multibody System, VIII-th International Conference on the Theory of Machines andMechanisms, TU Liberec, 2000, (pp 811-816), ISBN 80-7083-418-8.The dynamic force effects loading a body with GPM is given by the distance between the mass center and the instantaneouscenter of zero acceleration. The paper is focused on the instantaneous center of zero acceleration of a body being a member of ar-r-r binary group. Results are applied on the connecting rod of a four-bar link with constant and variable angular velocity of thecrank.

• Bílek, M., Jágrová, J., Mrázek, J.: Stiffness Computation of the Weaving Machine Heald Shaft Rod,VIII-th International Conference on the Theory of Machines and Mechanisms, TU Liberec, 2000, (pp107-112), ISBN 80-7083-418-8.There is a approximate computation of stiffness of heald shaft rod cross section which is composed of aluminum profile andsupporting steel wire.

• Petríková, I.: Dynamic Analysis of Beat-up Mechanism, Aplikovaná mechanika 2000, TU Liberec,2000, (pp 347-350), ISBN 80-7083-388-2.Work deal with dynamic solution of the weaving machine beat-up mechanism as flexible multibody system. The describedmodel enables analysis of relations, for instance between the sley mass and rigidity. The relation in fact influences considerablythe fabric quality.

• Petríková, I.: Dynamic Analysis of Weaving Machine Beat - up Mechanism, VIII-th InternationalConference on the Theory of Machines and Mechanisms, TU Liberec, 2000, (pp 621-626), ISBN 80-7083-418-8.Work deals with dynamic solution of weaving machine beat-up mechanism. The discrete model is designed, the equations ofmotion are derived and proper numeric calculation is performed.

• Marvalová, B.: The Experimental Determination of the Hyperelastic Material Properties ofCylindrical Pneumatic Spring, VIII-th International Conference on the Theory of Machines andMechanisms, TU Liberec, 2000, (pp 431-434), ISBN 80-7083-388-2.Elastic constants of the hyperelastic material of the cylindrical pneumatic spring are determined from the strain energy density.The components of the deformation gradient are determined from measured displacements of the small rectangle drawn on thesurface of the rubber cylindrical pneumatic spring. The true Cauchy stress tensor is calculated from the membrane theory. Theform of deformed spring surface is determined from the photographic records.

• Marvalová, B.: Determination of Effective Moduli of Brick Model of Textile ReinforcedComposite by Finite Element Method., VIII-th International Conference on the Theory of Machineand Mechanisms, TU Liberec, 2000, (pp 435-438), ISBN 80-7083-388-2.3D micromechanical “brick” model is developed for the FEM elastic analysis of textile reinforced composites. The model takesinto account the effect of the complex geometry of reinforcement and of different mechanical properties of each compositecomponent. Effective elastic properties of composite material are determined from the average values of stress and strain statesin RVE calculated by the FEM.

• Marvalová, B.: Software for the Determination of Elastic Properties of Textile ReinforcedComposites, 7. konference STRUTEX 2000, TU Liberec, 2000, (pp 161-164), ISBN 80-7083-442-0.The software for the determination of elastic properties of composites reinforced by plain weave fabric is presented. Thecomputation is based on 3-D micro-mechanical model of the composite material and on the FEM analysis. The model takes intoaccount the effects of the complex geometry of reinforcement and of different mechanical properties of each compositecomponent. The representative volumetric element (RVE) is partitioned into a set of small geometrically identical rectangularparallelpipeds of different elastic properties. A set of boundary displacement conditions is applied to the RVE as simulatedmaterial tests. The stress and strain states of RVE are calculated by means of FEM. The model is intended for Carbon-Carbonplain-weave fabric composites but it can be easily extended to other textile reinforced composites.

• Holý, S., Čalkovský, A., Jágrová, J., Vítek, K.: Innovation of Subject: "THIN-WALLSTRUCTURES", Research Report, 2000.The project was worked at teaching coordination of the subject Thin-wall structures on departments of ČVUT, TUL, VAT andVA Brno in the field of content and form.

• Loudová ,J.: Contribution to Problem of Controlled Vibro-Isolated Driver-Seat Mechanism.,Annual Report, 2000.The work presents possible approaches to the complex model development and dynamic behavior simulation of a driver-seat. Itis a complete contribution to the problem of a description of 3D vibrations compared to the former solutions of planar models.

• Šír, M., Petríková, I., Cirkl, D.: Stress Analysis of Principal Parts of BD8 Machine under TransportConditions, Report for UNIPLET Třebíč, 2000.Stress and strain analyses of the principal supporting parts of the BD8 knitting machine using simulated models in IDEAS andADAMS software environments were carried out for a transportation accident specified as a free fall of the inclined machinefrom certain altitude.

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KSP - Department of Engineering metallurgy

Head: Prof. Jaroslav EXNER, M.Sc., Ph.D.Telephone: +42 - 48 – 5353591E-Mail: jaroslav.exner@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353341E-Mail: hana.ryskova@vslib.czFax: +42 - 48 – 5353141

Simulation of solidification and cooling of castings (calculation and displacement of mould flow), solutionby SIMTEC system and FEM aid, casting know-how for complicated castings, design of gates, risers,isothermal and exothermic applications, data-base of mould and castings materials characteristics,CAD/CAM communication systems, optimisation of grey iron castings with the aim to minimise internalstresses to remove the followed heat treatments, determination, testing and prediction of materialcharacteristics in casting walls.Special courses on SIMTEC simulation programme.Consultancy, testing and expertise activity.Weldability and welding methods of coated metal sheets.Complex assessment of metal sheets drawability, critical conditions in sheet drawing.Optimisation of deep drawing conditions of various nonregular shapes (analysis and simulation, selectionof technological alternatives).Deep-drawing ability of coated metal sheets with Zn coatings.Influence of technology conditions in mould injection on the characters of final products, optimisation ofconditions in thermoplastics injection.Experimental analysis and simulation of thermoplastics injectionSticking and plastics strengthening of wide surface parts in car body building.

• Nová, I., Exner, J., Kalina, J.: Simulation of Solidification as an Effective Tool for solving ofCasting Homogenity, Slévárenství, časopis pro slévárenský průmysl, Česká republika, 2000, (pp 203-206).The article gives information about methods of the computer aided design and manufacturing of castings, which are orientated insimulation of metallurgical conditions producing the final structure and properties of sound casting.

• Neumann, H.- Bradáč, J.: Metallographic Analysis of Welds, research report, TU v Liberci - FS,2000.

• Neumann, H.: Quality Evaluation of Flanges´ welded Joins, research report, TU v Liberci - FS, 2000.• Konečný, L., Jelínek, M., Vrba, M.: Developing of Metallurgical and Technological Parameters of

SGI Castings Production in AGS a. s. Jičín Foundry, research report, TU v Liberci - FS, 2000.The report contains evaluation of microstructure of spheroidical graphite iron, evaluation of microstructure variation source,casting defects, source of their origin and proposals for the defects elimination are specified.

• Lenfeld, P.: Design of Form Product with Materials „Poplen“, research report, TU v Liberci - FS,2000.Design of form product for Mitop company include simulations of deformation during loading down and evaluation ofmechanical properties of not woven textile (50 % pp – 50 % flax).

• Barták J., Bubeník V., Bureš J., Burkovič J., Míšek B., Neumann H.: Production and EngineeringApplication in Welding (Textbook for graduation education of welding engeneers andtechnologists)., Česká svářečská společnost ANB a ZEROS, Ostrava, Česká republika, 2000, ISBN 80-85771-72-1.Textbook reviews one part of lectures for gradual education of welding engeneers and technologists.

• Lenfeld, P.: Increasing of Plastic Parts Quality by means of Measuring and Simulation,Habilitation thesis, TU v Liberci - FS, 2000.Work to acquirement of title Assoc. Prof. deals with increasing of plastic parts quality by means of measuring and simulation byinjection technology.

• Neumann ,H.: Hight-Strenght Sheets´ Welding, called paper, XXIV. Dny svařovací techniky, ESABVamberk, 2000.

• Nová, I., Kalina, J., Exner, J.: Thermal Measurement and Modelling of painted Mould, METAL2000, Ostrava, Česká republika, 2000, (pp 403-408), ISBN 80-85988-48-8.The article deals with an influence of the real heat transfer conditions on the total heat transfer in the system: casting – gas gap –metal mould. Using experimental measured data compared with computer simulated temperature field results the values of thetotal heat transfer coefficient at given temperatures were determined for a simple cylinder casting Æ 40 x 200 mm cast fromaluminium alloy alsi9cu3 in an iron mould.

• Exner, J., Nová, I.: Application Computer Technician for study Problems of casting Production,Spolupráce 2000, (pp 29-36), ISBN 80-7078-781-3.

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The article gives information about methods of the computer technology and computer aided design and manufacturing ofcastings focused an computer simulation of sound castings.

• Nová, I., Kalina, J., Exner, J.: Contribution to Homogenity of casting Solution, METAL 2000,Ostrava, Česká republika, 2000, (pp 406-411), ISBN 80-85988-48-8.The article gives information about methods of the computer aided design and manufacturing of castings, which are orientated insimulation of metallurgical conditions producing the final structure and properties of sound casting. Increasing quality demandsof castings urge to of further precision of databases as a part of simulating programmes or to the proper determination of thermaland physical properties of castings and moulds. Simulation calculus results of castings and moulds can be further successfullyused as new experience in design of various other castings, moulds and also in their manufacture.

• Neumann, H.: Hight-Strenght Sheets´ Welding, XXIV. Dny svařovací techniky, ESAB Vamberk,Vamberk, Česká republika, 2000, (pp 98-107), ISBN 80-02-01353-0.Contribution deals with technological and design requirements of Loader´ Arm production.

• Nová, I.: Contribution to Homogenity of casting Solution, Nové materiály a technologie, TULiberec, Liberec, Česká republika, 2000, (pp 169-173), ISBN 80-7083-404-8.The article gives information about methods of the computer aided design and manufacturing of castings, which are orientated insimulation of metallurgical conditions producing the final structure and properties of sound casting. Increasing quality demandsof castings urge to of further precision of databases as a part of simulating programmes or to the proper determination of thermaland physical properties of castings and moulds. Simulation calculated results of castings and moulds can be further successfullyused as new experience in design of various other castings, moulds and also in their manufacture.

• Jelínek, M., Konečný, L.: Determination of Oxygen activity in Molten Spheroidal Graphite Iron,Mezinárodní konference – Materiálové inženýrství 2000, 2000, (pp 48-53).The article deals with influence of oxygen volume and oxygen activity on cast iron properties and with possibility of use ofoxygen activity measurement for molten iron quality control.

• Lenfeld, P.: Influence of injection Technology at construct of Mould, Mez. konf. Formy prozpracování plastů, Brno, Česká republika, 2000, (pp 12).This contribution does influence of individual parameters of injection technology at construct of injection mould and here areincorporate influence of plastic materials, influence of injection machine and mould, influence of design parts and influence oftechnological parameters.

• Krebs, J.: The consequent Phenomena in the Injection moulding Process, 8 Mezinárodní kanferencevstřikování plastů, Plast Form Service s.r.o., Praha, Česká republika, 2000, (pp 19-27).The properties of the parts produced by the injection moulding of thermoplastics are more or less influenced by consequentphenomena. The most important phenomena are the orientation of macromolecules and the fiber filter, the internal stresses, theshrinkage, the weld lines and flow lines and the inhomogeneity of the crystaline structure.

• Šolcová, A., Lenfeld, P.: Utilization of recycled Waste during Automobile Parts Production,Mezinárodní konference Nové materiály a technologie, TU v Liberci - FS, Liberec, Česká republika,2000, (pp 258-262), ISBN 80 - 7083 - 404 – 8.It was evaluated utilization of recycled waste during injection moulding of back bumper by means of determining technologicaland mechanical properties.

• Solfronk, P., Kolnerová, M.: Influence of Sheet Metal Surface Morphology upon TribologicalConditions, Mezinárodní konference Nové materiály a technologie, Liberec, Česká republika, 2000,(pp 218-223).This article dealt with tribological conditions evaluated in system machine – tool – material and is orientated to car industry.During of build up of coachwork are most frequent used sheet metal coatings, which is on the basis of zinc. These coatingsinfluenced upon corrosive protection and its drawing conditions. In presented article is described evaluation of lubricants on thetribological conditions of sheet metal. Experiments were carried out on the tools and by the methodical approach developed atthe Department of Technical University in Liberec. The experiment consists of strip drawing and its influence upon surfacetexture surface tribology of sheet metal place. Results are shown by means of charts.

• Solfronk, P., Kolnerová, M.: Influence of Texture defined for Deep drawing on its TribologicalProperties, Form 2000 – Mezinárodní konference, TU v Liberci - FS, Brno, Česká republika, 2000, (pp133-138).This article dealt with tribological conditions evaluated in system machine – tool – material and is orientated to car industry.During of build up of coachwork are most frequent used sheet metal coatings, which is on the basis of zinc. These coatingsinfluenced upon corrosive protection and its drawing conditions. In presented article is described evaluation of lubricants on thetribological conditions of sheet metal. Experiments were carried out on the tools and by the methodical approach developed atthe Department of Technical University in Liberec. The experiment consists of strip drawing its influence upon surface textureand its influence upon friction force during change of contact pressure of clamping jaw. Results are shown by means of charts.

• Lenfeld P., Šolcová A., Sůra R.: Application of PP Matrix Composites reinforced by Long Fibres inconstruction of Cars., Mezinárodní konference Nové materiály a technologie, TU v Liberci - FS,Liberec, Česká republika, 2000, (pp 132-136), ISBN 80 - 7083 - 404 – 8.Purpose of composites in car application is to demanding rigidity and strength.

• Šolcová, A.: Adhesive Joints in Car construction, ČSVZP Spojování plechových dílů v hromadnévýrobě, ČSVZP PRAHA, Praha, Česká republika, 2000, (pp 6).Influence of adhesive bonding technology upon strength of adhesive joints, which are besides standardize utilized testmethodology also used a new methodology, which was developed at TU in Liberec.

• Šolcová, A.: Ulitization of Compozite Materials in reinforcing of Coachwork Bodies, Mezinárodníkonference plasty v automobilovém průmyslu 2000, KOMPOZITY BRNO s.r.o., Brno, Českárepublika, 2000, (pp 163-188).

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Reinforcing self-adhesive composite foils are sticked to choosen sites of coachwork bodies and after hardening ensure increasetheir rigidity.

• Kolnerová, M., Solfronk, P.: Morphology of Sheet Metal Surface used for stamping, Mezinárodníkonference Nové materiály a technologie, TU v Liberci - FS, Liberec, Česká republika, 2000, (pp 110-115).In presented work are described characterizations of sheet metal plate with its coatings and surfaces. There are also describedcontemporary methods of surface preparation of working rolls, which are used for texturing i.e. putting texture on the surface ofsheet metal plate. By means of these methods we can reach required morphology of sheet metal plate with specific roughness ofsurface.

• Kolnerová, M., Solfronk, P.: Influence of Technological Conditions during stretching the CoatedIron Sheets, Form 2000 – Mezinárodní konference, Brno, Česká republika, 2000, (pp 139-144).This article dealt with assessment of the sheet metals with zinc coatings used for bodywork stampings in car industry. Duringpressing these irregular form stampings becomes not only the traction, but also stretching over the ductile edge. Methodologyand the testing appliance were developed on the Department forming and plastics, in TU Liberec. The measure of the metal platestretching is probed on specimen at the tape form, which is fixed in device. Assessment’s criterion is deforming of the meteringsection on the sheet metal plate specimen. The sheet metal was tested with different mechanical properties and for different sortsof lubricants, which had influence upon technological conditions during stretching.

• Hisem, P., Lenfeld, P., Sůra, R.: Temperature Measurement of Large Surface Area moulding, 8.Mezinárodní konference Vstřikování plastů, Plast Form Service s.r.o., Praha, Česká republika, 2000,(pp 70-76).The present paper investigates temperature measurement on the surface of plastic bumper after removing from mold. Theexperiments were carried out by thermovision AGA 782 and results were illustrated by means of colour “thermograms” as wellas in graphs of temperature drops in particular position of those mouldings.

• Hisem, P., Ausperger, A.: Plastic Applications to the Exterior Part of cars, Mezinárodní konferenceNové materiály a technologie, TU v Liberci - FS, Liberec, Česká republika, 2000, (pp 62-67), ISBN 80- 7083 - 404 – 8.The present paper investigates plastic applications to the exterior part of cars. They are divided to parts, that are made bydifferent processing technology i.e. plastic injection, pressing, by RIM, SMC, BMC, GMT methods. These are detailed describeand in brief are compared as well as with introduction of its examples.

• Ausperger, A., Hisem, P.: Residual Strain in injection moulded Parts used in Car Industry,Mezinárodní konference Nové materiály a technologie, TU v Liberci - FS, Liberec, Česká republika,2000, (pp 7), ISBN 80 - 7083 - 404 – 8.This paper deals with problematic of residual strain in injection moulded plastic parts and their dependence on construction.

• Loufek J., Sůra R., Šoltésová Z.: Influence of Weld Lines upon Mechanical Properties, Mezinárodníkonference Nové materiály a technologie, TU v Liberci - FS, Liberec, Česká republika, 2000, (pp 229-235), ISBN 80 - 7083 - 404 – 8.This paper deals with problematic of weld lines and their influence upon mechanical properties.

• Exner J., Nová I.: Influece of Thermal Resistance of Gap in the casting – mould System,Solididification of metals and alloys, Polish academy of sciences department Katowice foundrycommission, Katowice, 2000, (pp 8).The article deals with the influence of the thermal transmission resistance of the casting - gap - metal mould system. Usingexperimental measured data and computer simulation the temperature conditions of the thermal transmission resistance werestudied and determined for the casting of parallel plate shape of thickness 20 mm pure aluminium, pure zinc and alsi13 were castin cast iron mould.

• Loufek, J., Lenfeld, P.,: Weld Lines in mouldings with several Holes of different shapes andProcessing Conditions, 16. FACHTAGUNG uber Verarbeitung und anwendung von polymeren,Technische universitat chemnitz, Chemnitz, 2000, (pp 8), ISBN 3 -00 - 004710 – 7.The weld lines are difficult to eradicate and are not caused by any deficiences in material, but are inherent in the design of thecomponent.

• Lenfeld,P. Loufek,J.: Reinforced Plastics-Composites with Long Fibres, 16. FACHTAGUNG uberVerarbeitung und anwendung von polymeren , Technische universitat chemnitz, Chemnitz, 2000, (pp7), ISBN 3 -00 - 004710 – 7.Long fibres composites materials belong to industrial material in the whole world. Making use of the unique combination oflightweight construction, strength and tenacity and low fibres composites have been recognized as an attractive material.

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KMT - Department of Material science

Head: Head: Assoc. Prof. Petr LOUDA, M.Sc., Ph.D.Telephone: +42 - 48 – 5353116E-Mail: petr.louda@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353115Fax: +42 - 48 – 5353342

Study of structures and crack areas, identification of metal materials (spectral analysis of chemicalcontent), testing of mechanical and dynamic characteristics.Assessment of thin layers characters (microhardness, adhesion, thermal and chemical resistance, wearresistance, cutting ability).Consultancy in material selection, replacement, thermal and chemical-thermal treatments, vacuumtechnologies, material characteristics assessments.

• Louda, P.: Plasma technologies., T-UNI, TU Liberec, 2000,č.1-2, (pp 5), ISSN 1211-9016.In the article are characterized industrial applications of plasma technologies.

• Louda, P.: Conference "New materials and technologies", T-UNI, TU Liberec, 2000, č.5, (pp 13),ISSN 1211-9016.Preparation of conference of material engineering in the frame of project CBC PHARE.

• Karlík, M., Kratochvíl, P., Janeček, M., Siegl, J., Vodičková, V.: Tensile deformation and fracturemicromorphology of an Fe-28Al-4Cr-0.1Ce , Material Science & Engineering A, Elsevier Science,Amsterdam, NL, 2000, č.289, (pp 182-188), ISSN 091-5093.Fracture and mechanical properties of vacuum cast and hot extruded Fe-28Al-4Cr-0.1Ce (at.%) alloy were studied as a functionof temperature and strain rate.

• Kratochvíl, P., Vodičková, V., Šedivá, I.: Structure and mechanical properties of iron aluminideFe28Al5Cr with additions of cerium and titanium boride, Hutnické listy, Ministerstvo průmysluČeské republiky, Praha, 2000, č.9, (pp 19-21), ISSN 0018-8069.Influence of titanium boride or cerium additions on upper stress limit, yield stress and ductility of alloy Fe28Al5Cr at widerange of temperatures. The forming with pressing (extrusion) at high temperature.

• Skrbek, B., Fiala, I.: Methodics and instruments for determination of of the shape of graphite atcast irons., NDT Welding Bulletin, Agentura TIRET, 2000, vol.10, č.2, (pp 94-95), ISSN 1210-7034.Castings from nodular cast iron - assortment of Czech foundries for customers from EN - necessity of checking of graphiteshape.

• Šída, D.: SEM analyses of the origines of the cracks of ceramic femoral component., FDA report,2000, č.9, (pp 53).It was made analysis of the origines of the cracks of ceramic femoral component.

• Šerý, M., Špatenka, P., Pavlík, J., Messelhäuser, J.: Chromatic monitoring of downstreammicrowave plasma source, Czech Journal of Physics, Institute of Physics, Academy of Sciences of theCzech Republic, 2000, 50, (pp 481-486).The application of the chromatic sensing for monitoring of a microwave plasma source is described. The emitted radiation fromthe plasma excited in the argon, oxygen and CF4 mixture was measured with three PIN-diodes with integrated red, green filtersand with optical. The response of the chromatic signals on variation of power and gas composition was investigated. Whereas agood sensitivity of the integrated optical signal to the power was confirmed, only limited sensitivity to the working gas mixturewas found.

• Skrbek, B., Novák, V.: Sorting and checking of globular graphice cast iron using ultrasound.,Slévárenství, Svaz sléváren České republiky, 2000, vol.68, č. 1, (pp 28-29), ISSN 1210-7034.Properties given by spheroidal graphite and metalurgy of nodular cast iron - modificatiom in the mould and its efficiencychecking with acoustic methods. Unique and specific application of ulrasound thicknessmeter DMVL-DL with digital gauge andPC.

• Louda, P., Kubíček, V.: Design of acceptable material for manufacturing of decantationcentrifuge., SILCHEM s.r.o. U Tonasa 2 Neštěmice, 2000.

• Louda, P., Kubíček, V., Čílová, V.: Material investigation of failured body of tip, OPRA s.r.o.,Volgogradská 64, Liberec 18 , 2000.The cause of material failure is nonhomogeneity of material.

• Kubíček, V., Čílová, V.: Metallographic evaluation of mould., HT - PROGRES Liberec, 2000.If is not possible to keep necessary parameters of heat treatment (cooling by flow of nitrogen),the mould material must bechanged.

• Čílová, V.: Gas nitridation, ŠKODA MOTORY a.s. Jablonec, 2000.Evaluation of quality of gaseous nitridation

• Louda, P., Kubíček, V., Čílová, V.: Material analysis of bitumen cutter., SANDVIK CZ, Liberec,2000.Due to insufficient cooling of the surface at performance the additional hardening occured with following spallin.

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• Kubíček, V., Čílová, V.: Metallographic evaluation of sample of material from knife cylinder.,TERMOTRON Jablonec n/N , 2000.On basis of determined results was designed optimal technology of heat treatment.

• Čílová, V.: Determination of root penetration of welded ventils., ALCO CONTROLS, s.r.o. Kolín,2000.Reason for leakage is beside of imperfect root of penetration of ventils the failure of membrane as well.

• Louda, P., Čílová, V.: Judgment of cause of failure of axial cam, VÚTS Liberec, 2000.The reason of failure is insufficient draft of forged layer (presence of microcraccks), big hardness of a part and its geometry(shape) - sharp transitions lower toughness.

• Louda, P., Kubíček, V., Vyvlečka, M., Čílová,V.: Evaluation of chemical composition andmetallography of casting from grey cast iron., FLIDR plast, s.r.o., 2000.To enhance the amount of pearlite we recommend by us designed heat treatment.

• Kubíček, V., Čílová , V.: Evaluation of quality of Cr layer - adhesion, TOS Varnsdorf, 2000.• Skrbek, B.: Problems of application of graphite cast irons at diesel engines and trucks., habilitation

thesis, TU Liberec, 2000.Collection of 34 published scientific and engineering works completed with comment.

• Opa, M.: Corrosion and material problems in exacting and ecologically important environments,doctorate thesis, TU Liberec, 2000.The subject of this dissertation thesis was to analyse the wide spectrum of corrosion and material problems in exacting andecological important enviroments, first of all in flue gas desulphurisation (FGD) systems in power stations combustioning fossilfuels.

• Konvičková, S., Valenta, J., Donát, A., Růžička P., Šída, D.: Biomechanics of human joints and itsreplacements, Vienala Praha 2000 + Vydavatelstvo a tlačiareň Štroffek - vydavatelstvo, Košice, ISBN80-7099-443-6.Biomechanics of human joints and its replacements.

• Louda, P., Odehnalová, D., Zahálka, P.:, Protection of tools with hard coatings., Mezinárodnívědecká konference při příležitosti 50 let založení Fakulty strojní, sekce 6 - Strojírenská technologie,Ostrava 5.-7.9.2000, (pp 339-341), ISBN 80-7078-800-3.One of methods of durability enhancement of tools is their coating with hard wear resistant layers. These plasma formed coatingsenhance surface hardness of tool, decrease friction in the place of contact of tool and chip and further decrease undesirablesurface reactivity of cutting material with the workpiece and neighbourhood at elevated temperatures that causes evidentdecreasing of undesirable origination of built up edges.

• Pospíšil, D.: Cast components based on the Fe-Al alloy, European Conference Junior Euromat 2000,August 28 -September 1, 2000, Lausanne, CH, (pp 344-345).The FeAl-based intermetallic alloys are of great interest because of their low density, low raw material cost, and excellentresistance to high-temperature oxidation, sulfidation, carburization, and molten salts. The applications require also methodsto cast these alloys into complex-shaped castings.

• Louda, P., Pácal, F., Niedzielski, P.: Wear resistance evaluation of thin hard layers at elevatedtemperatures., Proceedings of 18th national conference on heat treatment with internationalparticipation, 28-30.11.2000, Brno, (pp 311-319), ISBN 80-238-5972-2.Many of useful properties of both metallic and non-metallic materials are prefferentially determined by state of surface. Plasmatechnologies enable coating of common materials by layers that considerable enhance their properties. One of importantproperties is their wear-resistance at elevated temperaturec, e.g. at cutting.

• Novotná,D., Louda,P., Nosek,V.,: Application of systeme LUCIA to evaluation of corroosion testsof plasma deposited coatings., Sborník přednášek mezinárodní konference "Materiálové inženýrstvíse zaměřením na Nové materiály a technologie", Technická univerzita v Liberci, červen 2000, (pp 159-163), ISBN 80-7083-404-8.At evaluation of corrosion tests of steel samples with plasma deposited coatings in the environment of sulfur dioxide and steamcondensation was proved computer program LUCIA G.

• Opa,M.: Pieces of knowledge obtained by usage of corrosion probes , Sborník přednášekmezinárodní konference "Materiálové inženýrství se zaměřením na Nové materiály a technologie",Technická univerzita v Liberci, červen 2000, (pp 175-189), ISBN 80-7083-404-8.The contribution is devoted to problems of testing and use of high-alloyed stainless steels and nickel alloys in enviroments offlue gas desulphurisation systems in power stations combustioning soft coal. The big problem for different temperatures invarious parts of flue gas desulphurization is corrosion bellow dew point of acids and other chemical substances that arecondensed from flue gas. The article is first of all dealed with application of unique watter-cooled corrosion probes installed inoutlet ducts in power stations. The corrosion probes are welded toghether from the sample tubes of materials which could beused for corrosion control in flue gas desulphurization systems, heating plants, refuse incinerating plants and others.

• Kroisová, D.: Composite materials of new generation., Vědecká pojednání VI-1 , Sborník Střediskapro koordinaci výzkumu na vysokých školách v Euroregionu Nisa, Liberec, 2000, (pp 141-145), ISBN80-7083-393-9.

• Skrbek, B., Vodičková, V.: Subsurface inicialization of fatigue fracture of surface hardened pins.,Mezinárodní konference Fractography 2000, Stará Lesná, SK, (pp 350-353), ISBN 80-9684689-3-3.Input information - material, heat treatment, structure and distribution of internal stress. Fractografy of performance fractures ofpins of connecting rods of crankshafts. Torsion station tests and fractures. Combination of internal and performance stresses.Structure and geometry notches. Position of fracture initialization.

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• Hollstein,F., Louda,P.,.: Investigation of low reflective PVD coatings on medical instruments forminimally invasive surgery., Sborník přednášek mezinárodní konference "Materiálové inženýrství sezaměřením na Nové materiály a technologie", Technická univerzita v Liberci, červen 2000, (pp 67-74),ISBN 80-7083-404-8.

• Šedivá, I.: The properties of the extruded Fe-28Al-5Cr-1TiB2 alloy., European Conference JuniorEromat 2000, August 28 -September 1, 2000, Lausanne, CH, (pp 198-199).Iron aluminides are investigated as new high temperature structural materials.

• Špatenka, P., Täschner, Ch., Bartsch, K., Leonhardt, A.: Electron density and ion flux to thesubstrate in a Plasma Enhanced Chemical Vapor Deposition System excited by DC-PulsedPlasma., Seventh International Conference on Plasma Surface Engineering, , (pp 94).Plasma enhanced chemical vapour deposition (PECVD) has been used in many areas for deposition of coatings with specialproperties. To obtain some insights how the internal plasma parameters significant for film growth, such as ion energy and ionflux to the substrate, change with adjustment of the macroscopic process parameters we performed series of experiments usingLangmuir probe technique.

• Pavlík, J., Špatenka, P., Stryhal, Z., Hrachová, V., Kaňka, A.: Chromatic monitoring as a plasmadiagnostic technique: application in technological process., 14-th International Conference onSurface Modification Technologies, 11-13.9.2000, Chaillot-Galliera Conference Center, Paris, France,(pp 1).We describe a new method for in-situ monitor system for material-processing plasmas, based on OES. This systemallows simultaneous control of intensity of particular emmision lines and determination of chromatic values of the emitted light.This method enables to reduce the number of data produced by the typical OES and thus to obtain a rapid output characteristicfor the particular plasma state.

• Šerý, M., Špatenka, P., Pavlík, J., Messelhäuser, J.: Chromatic monitoring of downstreammicrowave plasma source., 19th Symposium on Plasma Physics and Technology Praha, June 6 - 9,2000, (pp 6), AIIN 0011-4626.The application of the chromatic sensing for monitoring of a microwave plasma source is described. The emitted radiation fromthe plasma excited in the argon, oxygen and CF4 mixture was measured with three PIN-diodes with integrated red, green filtersand with optical. The response of the chromatic signals on variation of power and gas composition was investigated. Whereas agood sensitivity of the integrated optical signal to the power was confirmed, only limited sensitivity to the working gas mixturewas found.

• Daďourek,K., Odehnalová,D., Žabka, L.: Viscoelastic behavior of polyethylene in the range of highloadings., Sborník přednášek mezinárodní konference "Materiálové inženýrství se zaměřením na Novémateriály a technologie", Technická univerzita v Liberci, červen 2000, (pp 35-40), ISBN 80-7083-404-8.The article gives short results of modelling of viscoelastic properties polyetylene LITEN ZS70 by high loads and comparations ofmodel with experiments by stress relaxation and cyclic loading.

• Karger,A., Krakorová,D., Daďourek,K.,: Fracture mechanism at bending stress of c-p composites.,Sborník přednášek mezinárodní konference "Materiálové inženýrství se zaměřením na Nové materiálya technologie", TU v Liberci, červen 2000, (pp 124-130), ISBN 80-7083-404-8.During bending stress of C-P composites (polyester and epoxide matrix reinforced by carbon woven and knitted fabric) occurreda failure of delamination coats on pressure side and resulting failure filaments also on the pressure side namely at variance withsupposed mechanism failure filaments on the tension side. Our goal is the exact model of mechanism fracture at bending stressof C-P composites.

• Kroisová,D.,: Interphase boundary in composite systems - influence of humidity absorbed onfiller´s surface., Sborník přednášek mezinárodní konference "Materiálové inženýrství se zaměřením naNové materiály a technologie", TU v Liberci, červen 2000, (pp 130), ISBN 80-7083-404-8.The paper presents experimental evaluation of the humidity adsorbed on the fillers´ surface on the value of mechanical propertiesof composite material.

• Podkovičák,J., Louda,P., Zahálka,P.,: Evaluation of deformation of driven wheel gearbox afterheat treatment., Sborník přednášek mezinárodní konference "Materiálové inženýrství se zaměřenímna Nové materiály a technologie", TU v Liberci, červen 2000, (pp 198-203), ISBN 80-7083-404-8.This contribution is dealing with problematics of driven wheel gearbox shape deformation at heat treatment. At evaluation ofperformed experiment was stated following facts: at "hardening under press" a considerable straightening of web wheels, at"free hardening" a partial enhancement deformation in lower floor of grate occurs. The expansion of grate to more floor thisproblem don`t solve. The reducing of deformation difference in dependence on site occurs at enhancement of temperature ofquenching oil. The stress relief annealing showed influence of stress on gap size deformation.

• Šedivá, I., Kratochvíl, P.: Influence of cerium and titanium boride to structure and mechanicalproperties of iron aluminide Fe28Al5Cr., Sborník přednášek mezinárodní konference "Materiálovéinženýrství se zaměřením na Nové materiály a technologie", TU v Liberci, červen 2000, (pp 251-257),ISBN 80-7083-404-8.Influence of titanium boride and cerium to upper stress limit, yield stress and ductility of the alloy Fe28Al5Cr.

• Steklá, P., Daďourek, K.: Methods of plastics welding., Sborník přednášek mezinárodní konference"Materiálové inženýrství se zaměřením na Nové materiály a technologie", Technická univerzita vLiberci, červen 2000, (pp 224-229), ISBN 80-7083-404-8.Welding with heating elements is often used method of plastics welding. Further methods are ultrasound , vibration and high-frequency welding.

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• Vodičková, V., Hanus, P., Novotná, Z., Kratochvíl, P.: The hardening of alloy Fe-40at.%Al withthermal vacancies., Sborník přednášek mezinárodní konference "Materiálové inženýrství sezaměřením na Nové materiály a technologie", TU v Liberci, červen 2000, (pp 269-274), ISBN 80-7083-404-8.Thermal vacancies introduce significant hardering in Fe-40 at.% Al alloy quenched from high temperatures. The hardering isalso affected by additions of B and Zr. The experiment was designed to verify the existence of “subphases” in B2 field of the Fe-Al equilibrium diagram. It proved, that there exist recognizable discontinuities in dependences of the hardness and strength onthe quenching temperature near the boundaries between the “subphases”.

• Kulhánková, J., Nosek, J.: Actuation properties of pzn - pt monocrystals and their checking.,Sborník přednášek mezinárodní konference "Materiálové inženýrství se zaměřením na Nové materiálya technologie", TU v Liberci, červen 2000, (pp 165-169), ISBN 80-7083-404-8.In the paper we study material properties of piezoelectric relaxor-based single crystals, which are important for application inactuators and sensors. The coefficient of electromechanical coupling k33, elastic coefficient s33 and piezoelectric coefficient d33are determined using dynamic and static methods of measurement.

• Honců, J., Kulhánková, J.: Reasonable design guide for helical spring in restrictive conditions.,Zborník referatov XLI. mezinárodná konferencia kateder častí a mechanizmov strojov, 6.-8.9.2000,Košice - Herľany, Slovensko, (pp 113-116), ISBN 80-7099-480-0.This article describes the method off successive steps, which result in reasonable design of helical spring.

• Kroisová, D.: Silicone dioxide like a filler of composite systems - an influence of adsorbed waterand air on the fillers surface., The Fourth International Conference - Innorganic Pigments andBinders, (pp 224-225), ISBN 80-902278-4-8.The paper describes an ifluence of adsorbed water and air on the filler´s surface in composite systems. The composite systemswere prepared from epoxy resin and silicone dioxide.

• Louda, P., Nosek, V., Zahálka, P.: Application of thin wear-resistant coatings., CO-MAT-TECH'2000: 8. medzinárodná vedecká konferencia. Bratislava: STU, 2000, (pp 137-142).

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KEZ - Department of Power engineering equipment

Head: Assoc. Prof. Jiri UNGER, M.Sc., Ph.D.Telephone: +42 - 48 – 5353405E-Mail: jiri.unger@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353411E-Mail: drahomira.stejskalova@vslib.czFax: +42 - 48 – 5105882

Research of turbulent shear areas.Modelling of interactive processes of lower energy gamma radiation with absorbing environment.Measurement of state variables, Calibration of thermometers, pressure gauges, characteristic measurement ofsmall power stations.Thermo-anemometry and laser-Doppler anemometry.Visualisation of velocity and thermal fields.Consultancy in: Environmental protection, Alternative energy sources, Numerical simulation of thermal,pressure and velocity fields. Audits of thermo-power stations, Exploitation of residual heat, Powermachinery and equipment.Problem solution of compressible and non-compressible fluids.The heat and mass transfer applications (drying, airing, and air-conditioning).Thermosystems measurements (determining of thermophysical properties, moisture of materialsmeasurement, humidity of air at high temperatures and of air polluted by mechanical particles).Consultancy in theoretical calculations, designing and testing of thermal systems (thermal pumps, solarenergy, heat exchangers, dryers, airings, air-conditioning, heat consumption measurement).Courses in: Energy and heat savings in industry.

• Skácel, D.: Historic Hydro power station, Alternativní energie, AE 2/2000, CEMC - ČeskéEkologické Manažerské Centrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Photovoltaic development in the World and in the Czech Republic, Alternativní energie,AE 3/2000, CEMC - České Ekologické Manažerské Centrum , Praha, ISSN 1212-1673.

• Skácel, D.: Burning of the waste , Alternativní energie, AE 3/2000, AE 4/2000, CEMC - ČeskéEkologické Manažerské Centrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Price of the photovoltaic technology , Alternativní energie, AE 3/ 2000, CEMC - ČeskéEkologické Manažerské Centrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Photovoltaic systems, Alternativní energie, AE 3/ 2000, CEMC - České EkologickéManažerské Centrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Hybrid engines, Alternativní energie, AE 4/ 2000, CEMC - České Ekologické ManažerskéCentrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Transport of the future., Alternativní energie, AE 4/ 2000, CEMC - České EkologickéManažerské Centrum , Praha, , ISSN 1212-1673.

• Skácel, D.: Nuclear power and renewable energy., Alternativní energie, AE 5,6/ 2000, CEMC -České Ekologické Manažerské Centrum , Praha, , ISSN 1212-1673.

• Adámek, K.: Numerical Modelling of Air Flow in Air Jet Weaving System, Intern. J. PolymericMater., 2000, Vol. 47, Overseas Publishers Association, Printed in Malaysia, (pp 613-623).First results of 2D numerically modelled expansion and flow of compressible and non-viscous gas in typical parts of air jetweaving system.

• Olehla, J., Olehla M., Ibrahim K.: The Identification of Thermal Systems using the StatisticsMethods, Vědecká pojednání - Wissenschaftliche Abhandlungen - Práce naukové V-1, VI-1, 2000,Technická univerzita v Liberci, Liberec, Česká republika, (pp 160-168), ISBN 80-7083-393-9.The paper deals with static and dynamic identification of thermal systems.

• Strádal P., Olehla J., Olehla M.: A Centre fort Investigation of Solar Radiation in Spain,Alternativní energie, r. III., č. 5, 6, České ekologické centrum, Praha, Liberec, (pp 31-33), ISSN 1212-1673.The paper deals with possibilities of practical use the solar radiation.

• Šulc J.: Contribution to application of the Monte Carlo method at radionuclide x-ray fluorescenceanalysis, habilitation thesis, TUL, 2000.In presented work the Monte Carlo (MC) method is used to implementation of the fundamental parameter's method.Contributions of different combinations of the multiple interaction processes of low energy photons contributing to the primaryproduced photons of the characteristic radiation of the determined elements in a poly-component mixtures, were simulated.Dependence of the calculated probabilities of these processes on the effective atomic number of the modelled mixtures wasexamined. It was also shown that MC method could be applied to the simultaneous determination of elements As and Pb at poly-component mixtures. Advantages and some limitations of this approach were also discussed. Finally, different models of an

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exciting source with radionuclide Am241 were tested. Results of simulation were compared with results obtained experimentally.It was found that the space model (annular) is the most convenient one for simulation of the measuring systems with Am241radionuclide source.

• Olehla, J., Olehla, M., Gharazi, M.: Identification of Multivariable Thermal Systems, 4.Mezinárodní vědeckotechnická konference Process Control Říp 2000, Univerzita Pardubice, Pardubice,Česká republika, 2000, (pp 103-116), ISBN 80-7194-271-5.The paper deals with two ways of identification of thermal system - one is parametric identification and other is non-parametricidentification.

• Olehla, M., Olehla, J.: The effect of disturbance in the identification of technological systems,Proceeding 27. International Conference of Slovak Society of Chemical Engineering, TU BratislavaSlovensko, Slovensko, 2000, (pp 100), ISBN 180-227-1350-3.The paper focuses on the identification of linear thermal systems.

• Pelant, J., Adámek, K.: Air Flow in Picking Channel of Air Jet Loom, 3rd Europe Congress onComputation Math. in Appl. Sciences and Eng. (ECCOMAS 2000), CIMNE (International Centre forNumerical Methods in Engineering), Barcelona, Španělsko, 2000, (pp 857), ISBN 84-89925-69-0.

• Unger,J., Klauz,T.,: The numerical simulation of the pulsating effects in the exterior mirror of theŠKODA Fabia car., 6. Uživatelská konference Fluent 2000, TechSoft Engineering, Česká republika,Praha, 2000, , ISBN 80-238-6119-0.In the paper a numerical study of interaction of an exterior mirror and a part of a car body model Škoda-Fabia is presented withrespect to dynamics of flowing around and pulsating processes as a possible source of noise originated in aerodynamicphenomena. The problem was solved with use of "Large Eddy Simulation". A dominant frequency of periodic fluctuations atvehicle velocity of 90 Km/h was set with use of indirect visualisation method. This frequency was collated with noise spectremeasured in an aerodynamic tunnel.

• Unger, J., Klauz, T.,: The influence of the turbulence on generation of the aerodynamic noise.,Colloquium Fluid Dynamics 2000, Institute of Thermomechanics AS CR, Česká republika, Praha, 2000,( pp139-141), ISBN 80-85918-59-5.The presented work describes numerical visualisation of periodic non-stationary and its connection with generation of theaerodynamic noise. Study of the periodic non-stationary, which has been generated near circumfluence solids also; makepossible to formulate expectations for generation of noise and vibration of the aerodynamic extraction. The Solution has beenperformed using "Large Eddy Simulation" (LES) and "Realisable k-e model. Indirectly by method of numerical visualisation isassessment dominant frequency of periodic fluctuation in specified speed of inclination flow. This frequency is confronted withnoise spectrum deal out in the aerodynamic tunnel.

• Unger, J., Klauz, T.,: The numerical simulation of the pulsating effects in the exterior mirror of theŠKODA-Fabia car., Colloquium „Fluid Dynamics 2000“, Ústav termomechaniky AV, Praha, ČeskáRepublika, 2000, (pp 139-141), ISBN 80-85918-59-5.The presented work describes numerical visualisation of periodic non-stationary and its connection with generation of theaerodynamic noise. Study of the periodic non-stationary, which has been generated near circumfluence solids also; makepossible to formulate expectations for generation of noise and vibration of the aerodynamic extraction. The Solution has beenperformed using "Large Eddy Simulation" (LES) and "Realisable k-e model. Indirectly by method of numerical visualisation isassessment dominant frequency of periodic fluctuation in specified speed of inclination flow. This frequency is confronted withnoise spectrum deal out in the aerodynamic tunnel.

• Unger, J., Klauz, T.,: The influence on generation of the aerodynamic noise., 6.konference FLUENT2000, TechSoft Engineering, Praha, Praha, Česká Republika, 2000, (pp 55-60), ISBN 80-238-6119-0.Numerical simulation of the fluid flow in front body section specially in exterior mirror section of the ŠKODA – Fabia car,considering to dynamics circumfluence and pulsate processes like possible source of noise aerodynamic extraction. Solution hasbeen performed using "Large Eddy Simulation". Indirectly by method of numerical visualisation is assessment dominantfrequency of periodic fluctuation in specified speed 90 km/hod. This frequency is confronted with noise spectrum deal out in theaerodynamic tunnel.

• Fialová, M., Středa, I.: Gibbs Function and Phase-Change Process on the van der Waals Isotherm,XIX. Medzinárodná konferencia Stretnutie katedier mechaniky tekutín a termomechaniky, Žilinskáuniverzita/EDIS - vydavatelstvo ŽU, Slovensko, Žilina, 2000, (pp 232-36), ISBN 80-7100-739-3.During the phase changes there is the change of some state properties, such as volume, enthalpy or entropy, some state propertiesstay constant (pressure, Gibbs function,). The aim of the article is the analysis of the behaviour of the some properties of van derWaals gas during the phase change.

• Fialová, M., Kozel, K., Louda, P.: Calculation of some 3D cases of incompressible viscous fluidflow, Colloquium Fluid Dynamics 2000, Institute of Thermomechanics AS CR, Česká Republika,Praha, 2000, (pp 19-22), ISBN 80-85918-59-5.Numerical solution of the flow of viscous incompressible fluid in 3D channels. Solution of Navier-Stokes Equation. Numericalmethods: finite volume method, multistage Runge-Kutta method.

• Novotný P., Záda, V.: Measure of Moment Inertia, VIII. International Conference on The Theory ofMachines And Mechanisms 5-7.9. 2000 Liberec Czech Republik, 2000, (pp 563-568), ISBN 80-7083-418-8.It is some measure methods of moment in this paper. There were the simple two methods verified: torsion and pendulum ones. Itwas achieved the better accuracy with the torsion method then with pendulum one. The measurement precision was lower thanone percent.

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• Olehla, J., Hradecký, V., Olehla, P.: Co-generation units-new technology of the third millennium,Racionálna výroba, prenos a spotreba energie. 2. Mezinárodná konferencia, Košice, Košice, Slovensko,2000, (pp 243-249), ISSN 1335-2393.The papers deals with possibilities of use of co-generation, with the stress is put in the planing and economy of production. -Some examples of the utilisation are presented.

• Olehla, J., Olehla, M., Hradecký, V.: Influence of the construction of nozzle on the running oftemperature and of speed, Aplikacia experimentálnych a numerickych metód v mechanike tekutin, TUŽilina, Žilina, Slovensko, 2000, (pp 202-205), ISBN 80-71-717-X.The papers deals with influence of the construction of nozzle on the running of temperature and of speed.

• Olehla J., Strádal P.: Software application in heat technics, Pedagogický software 2000, Jihočeskáuniverzita v Českých Budějovicích, České Budějovice, 2000, (pp 32), ISBN 80-7041-723-4.Some of the problems in the field of heating techniques and possibilities of utilisation own original as well as commercial useprogrammes are decribed in the papers.

• Olehla, J.,: Investigation of experimental measurements in the heat techniques, Modernizacevysokoškolské výuky technických předmětů - Sborník příspěvků z mezinárodní konference,Gaudeamus Hradec Králové 2000, Hradec Králové, Česká republika, 2000, (pp 138-140), ISBN 80-7041-723-4.In the paper, some of the problems in the field of heating techniques are described.

• Zakopal, R.,: The usage of the laser Doppler anemometry in analysis of velocity fields on the airjet - picking system of air - jet loom., Konference Aplikovaná mechanika 2000, Technická univerzitav Liberci, Česká republika, Liberec, 2000, (pp 395-400), ISBN 80-7083-388-2.The article deals with the usage of the laser Doppler anemometry in analysis of velocity fields inside the picking canal of the airjet - picking system of air - jet loom. It considers the influence of position of the helping jets to velocity field and it comparesvalues of velocity measured with the pressure probe and the digital indicator dynamic pressure with results achieved by themethod of laser Doppler anemometry.

• Adámek, K.: Diffuser with sudden enlargement, 12. mezinár. konf. Aplik. exp. a numer. metód vmech. tekutín, Žilinská univerzita Žilina, Žilina, Slovensko, 2000, , ISBN 80-7100-717-X.Application of numerical modelling of flow in operating problem from industrial practice. Current state and proposed changesare modelled to improve qualities of system. Applicability of simplified numerical model and interpretation of received resultsare discussed, regarding to necessary simplified initial presumptions.

• Adámek, K.: Industrial application of numerical modelling in flow mechanics, 8. mezinár. konf. oteorii strojů a mechanismů, Technická universita Liberec, Liberec, Česko, 2000, (pp 21-25), ISBN 80-7083-418-8.The contribution presents some results of numerical modelling of flows applicated in various technical systems. Used two-dimensional models of compressible inviscid flows give a good image about air flows in observed area. Imperfections given byabsence of viscosity and/or by three-dimensional reality can change some values of individual flow quantities but their ratios inseveral solved variants of problems can be considered as he same or similar Of course, every numerical modelling should beverified by real trials and experiments.

• Petříková, M.: Research for analysis of properties heat energy., XIX. medzinárodná konferenciaStretnutie katedier mechaniky tekutín a termomechaniky, Žilinská univerzita v Žilině, EDIS, Žilina,Slovenská republika, 2000, (pp143-145), ISBN 80-7100-729-3.Analysis is covering properties of heat energy values and energetic factor.

• Olehla, J., Olehla, P.: Temperature measurement and calculation of a periodically heated andcooled, Auslegung und modellierung energetischer Anlagen und Systeme, TU Hamburg, Hamburg,BRD, 2000, (pp 35-37).The papers deals with temperature distribution in an outer wall being periodically heated and cooled.

• Unger, J., Kratochvíl, J., Kopecký, V., Svoboda, M., Fialová, M., Klauz, T.: Research of Flow- andTemperature- Fields in Environmental Technique and in Power Engineering connected withDevelopment of Optical Measuring Methods., annual report, 2000.

• Kratochvíl, J., Urbášek, J., Šulc, J.: The Laboratory of fluid flow and piping development, researchreport, TU v Liberci, 2000.

• Adámek, K.: Air flow in spinning chamber - numerical modelling (feasibility study), researchreport, Rieter AG Winterthur, Švýcarsko, 2000.Air flow in spinning chamber - numerical modelling (feasibility study).

• Adámek, K.: Numerical model of flow at the beginning of the reed channel when some designchanges were made, research report, VÚTS Liberec a Vertex Moravský Krumlov, 2000.

• Adámek, K., Air flow in feeder for melted glass, research report, Saint Gobain / Vertex Litomyšl,2000.Numerical modelling of flow showed the cause of irregular function of system and indicated remedy possibility.

• Adámek, K.: Flow in nozzles of melting pots, research report, Saint Gobain / Vertex Litomyšl, 2000.Nozzle shape optimisation using numerical modelling of flow.

• Adámek, K.: Numerical model of flow in spinning system, research report, Grant MPO ČR pro VÚTSLiberec, 2000.Numerical model of flow in spinning system.

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• Adámek, K.: Design of Vega nozzle using numerical modelling of flow , research report, VÚTSLiberec a Vertex Moravský Krumlov, 2000.Design of Vega nozzle using numerical modelling of flow.

• Adámek, K.: Numerical modelling of the flow in back-bone channel of BP machine, research report,Rieter Elitex Ústí n.O., 2000.Numerical modelling of the flow in back-bone channel of BP machine.

• Adámek, K.: Influence of reed design parameters on aerodynamic features - 2D modelling, annualreport, Picanol - Ieper /Belgie, 2000.Influence of reed design parameters on aerodynamic features - 2D modelling.

• Adámek, K., Pelant, J.: 3D model of flow in reed channel, annual report, Picanol - Ieper /Belgie, 2000.3D model of compressible inviscid flow in reed channel.

• Adámek, K.: review for GA ČR 1x

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KKY - Department of Applied cybernetics

Head: Prof. Miroslav OLEHLA, M.Sc., Ph.D.Telephone: +42 - 48 – 5353284E-Mail: miroslav.olehla@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353283E-Mail: dana.vasakova@vslib.czFax: +42 - 48 – 5105882

Identification of technology process systems, control of technological processes, adaptive regulation,measurement analysis for mathematics model development, polyoptimization of production processes,robust programming interfaces for automation of production processes.Evaluation of regulating equipment (quality, requirements, comparison).Consultancy in programming within Pascal, C++, writing in WWW, spreadsheet programming, databaseprogramming.Courses in programming (text editors, spread sheets, databases).

• Olehla, J., Olehla, M., Ibrahim, K.: The Identification of Dynamics Systems using the StatisticsMethods, vědecká pojednání- Wissenschaftliche abhandlungen-práce naukove VI-1, VI-1, rok 2000,Technická univerzita v Liberci, Technická univerzita v Liberci, Liberec, Česká Republika, ISBN 80-7083-393-9.The paper deals with statics and dynamics identification of thermal systems.

• Němeček, S., Zámišová, R.: Modeling of a braking systém in program MatLab / Simulink , vědeckápojednání- Wissenschaftliche abhandlungen-práce naukove VI-1, VI-1, rok 2000, Technická univerzitav Liberci, Liberec, Česká Republika, ISBN 80-7083-393-9.The paper reviews one of the possible application of the simulation program MatLab/ Simulink. This program was used for adesign of one degree braking system.

• Moučka, M.: Mathematical Model of Electrohydraulic Servovalve, vědecká pojednání-Wissenschaftliche abhandlungen-práce naukove VI-1, VI-1, rok 2000, Technická univerzita v Liberci,Liberec, Česká Republika, ISBN 80-7083-393-9.The presented work dealt with mathematical determination of hydraulic servovalve with feedback spring. From resultingmathematical description we obtein block-char, which can be used for simulation of actual behavior presented servovalve.

• Ibrahim, K.,: Design of Regulators by Robust Pole Placement Method, vědecká pojednání-Wissenschaftliche abhandlungen-práce naukove VI-I, VI-1, rok 2000, Technická univerzita v Liberci,Liberec, Česká Republika, ISBN 80-7083-393-9.This work approaches the robust pole placement method to the practical demands. First of all, the method is described. Then anexample is shown how to place the poles in a given region and how to find a robust regulator that can hold the poles of thesystem in this region. Finally, the calculations are shown and compared.

• Strádal, P., Olehla, J., Olehla, M.: A Centre for Investigation of Solar Radiation in Spain,Alternativní energie, roč.III., č. 5,6, České ekologické manažarerské centrum Praha, České ekologickémanažarerské centrum Praha, Liberec, Česká Republika, ISSN 1212-1673.The papers deals with utilization of measurement of solar energy.

• Hanuš, B., Olehla, M., Modrlák, O.: Numerical control of technological processes, Vysoké učenítechnické v Brně, nakladatel-VUTIUM, 2000, ISBN 80-214-1460-X.The book discuss possibilities of design of numerical controller's of high level.

• Olehla, M., Olehla, J.: The effect of disturbance in the identification of technological systems,Procceding 27th. International Conference of Slovac Society of Chemical Ingeneering, TU BratislavaSlovensko, 2000, (pp 100), ISBN 180-227-1350-3.

• Olehla, J., Olehla, M., Gharazi, M.: Identification of Multivariable Thermal Systems, 4. mezinárodnívědeckotechnická konference Process Control ŘÍP 2000, Univerzita Pardubice, 2000, (pp 103), ISBN80-7194-271-5.

• Olehla, J., Olehla, M., Hradecký, V.: Influence of the construction of nozzel on the ranning oftemperatere and of speed, Aplikacia experimentálnych a numerickych metód v machanike tekutin, TUŽilina, 2000, (pp 202-205), ISBN 80-7100-717-X.The papers deals with influence of the construction of nozzel on the ranning of temperature and of speed.

• Olehla, M.: Modern teaching methods for applied cybernetics, Pedagogický software 2000,Jihočeská univerzita v Českých Budějovicích , 2000, (pp 141-143), ISBN 80-7041-723-4, Possibility ofincreasing teaching level in the subject Basics of applied cybernetics.

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• Věchet, V., Moučka M.: The conception of the class-room for Linux, Pedagogický software 2000,Scientific Pedagogical Publishing, České Budějovice, 2000, (pp 61), ISBN 80-85645-40-8.The text introduces results of the project solutions of the class-room building on the basis of the network with Linux-server. Theefficient multiprocessor systém work as boot and file server for diskless stations in the class-room and simultaneous ensures firt-rate services for X-terminals and diskless stations and local processing the most exacting graphics applications also.

• Zámišová, R., Němeček, S.: The Simulation of the Function of Power Unit with an Asynchronousmotor, 4. mezinárodní vědeckotechnická konference Process Control ŘÍP 2000, Univerzita Pardubice,2000, (pp 177), ISBN 80-7194-271-5.This work describes the procedure of designing the mathematical model of an asynchronous motor and the use of this motor inthe simulation of the properties of a power unit. Simulation is realized in Matlab / Simulink. The presented method is mainlydetermined for the demonstration purposes in the subject " Servosystems".

• Moučka, M., Gharazi, M.: Design of Digital Regulator for a Velocity Servosystem, 4. mezinárodnívědeckotechnická konference Process Control ŘÍP 2000, Univerzita Pardubice, 2000, (pp 104-108),ISBN 80-7194-271-5.This paper shows the design of a digital PI regulator that controls the velocity of a direct current elektromotor. The regulatoralgorithm is implemented in programming language C and the graphical interface of the control system is made in LabView.

• Ibrahim, K.: Design of Regulators by Robust Pole Placement Method, Seminář kateder automatizacea kybernetiky PRINCIPIA CYBERNETICA 2000 , Srní 2000, Západočeská univerzita v Plzni, 2000,(pp 170-178).This work approaches the robust pole placement method to the practical demands. First of all, the method is described. Then anexample is shown how to place the poles in a given region and how to find a robust regulator that can hold the poles of thesystem in this region. Finally, the calculations are shown and compared.

• Ibrahim, K.: Design of Regulators by Robust Pole Placement Method, Seminář ASŘ 2000,"Instruments and Control", Vysoká škola báňská - Technická univerzita Ostrava, Fak.strojní, kat. ASŘ,2000, (pp 12), ISBN 80-7078-774-0.This work approaches the robust pole placement method to the practical demands. First of all, the method is described. Then anexample is shown how to place the poles in a given region and how to find a robust regulator that can hold the poles of thesystem in this region. Finally, the calculations are shown and compared.

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KST - Department of Machine elements

Head: Assoc. Prof. Zdenek PUSTKA, M.Sc., Ph.D.Telephone: +42 - 48 – 5353316E-Mail: zdenek.pustka@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353315E-Mail: milena.klosova@vslib.czFax: +42 - 48 – 5105882

Solution of dynamic problems by means of simulation, modal analysis, visualisation of running oscillations,designing and dimensioning of machine elements concerning running loads and contact relations with theFEM aid.Simulation of dynamic behaviour of pneumatic and hydraulic mechanisms of break systems, dynamics ofmobile vehicles in process of controlled brakes, springing and damping and interaction on various roaddriving.Dynamic load on Hydropulse testing equipment. Laboratory for research of dynamics structures, aimedon vibroisolating systems enabling simulation of multiaxis kinematics loading and wide ranges of excitationsignal.Vibroisolation of machines and equipment, air springs application.Courses in computer aid in design work within Windows, modelling basics in Pro/Engineer.

• Pešík, L.: Problems of frame stability of elastic supported machines, XLI. Medzinárodnákonferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnická fakulta, 2000, (pp253-256), ISBN 80-7099-480-0.A lot of machines when running are the sources of broad-hand noise and vibrations. One possible way of removing theseunfavourable influences on the environment, and especially on human beings, is an pneumatic support. Here, air and rubbersprings are inserted between the frame of machine and the floor. Under these conditions, the transmission of vibration transferredto the floor declines, along with the level of noise. The dynamic characteristics of a machine placed on this elastic base differsomewhat from those of a machine fixed to the floor with an usual firm support.

• Prášil, L., Heller, L.: Calculation and modeling of involute eliptical gears, XLI. Medzinárodnákonferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnická fakulta, 2000, (pp262-265), ISBN 80-7099-480-0.The paper solves analytical expression of base curve elliptical gears and their involutes. There is described the way of calculationof the individual involutes for parameters of elliptical gear. Summary shows creation of model with an example.

• Pustka, Z.: Functional characteristics of the air springs by non- standard load - identification,XLI. Medzinárodná konferencia katedier častí a mechanizmov strojov Košice, TU v Košicích,Strojnická fakulta, 2000, (pp 268-271), ISBN 80-7099-480-0.The air springs are in some cases constructional built-in in such way they work at non-standard operating conditions(misalignment, lift following are or common curve, inclination of supporting faces). Presented paper deals with the constructionand the use of the special measuring apparatus. The database of readings should be found with the help of this apparatus. Theaim is to make a methodology to process the measured readings resulting in functional characteristics of the air spring for setoperating conditions.

• Ševčík, L., Prášil, L., Kracík, V.: Tooth profile geometry of non-circular gears, XLI. Medzinárodnákonferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnická fakulta, 2000, (pp333-336), ISBN 80-7099-480-0.A method for the computation of the teeth of non-circular gear wheels is presented. The envelope of generating tool profile ismathematically formulated for active part of the profile and transient root curve and root non-circular gears.

• Kubík, J.: Impacts of slots for safety rings to the concentration of stress in bending, Aplikovanámechanika 2000, TU v Liberci , Fakulta strojní,, 2000, (pp 227-230), ISBN 80-7083-388-2.Article shows relation of the shape coefficient to diameter changes of shaft with slot for safety ring. Solution is limited to thebending stress only. Determination of the stress concentration factor α uses the finite element method {FEM}.

• Mácha, A.: Determining properties of the rubber cylindrical springs by the Methods of FiniteElements, {FEM] Aplikovaná mechanika 2000, TU V Liberci, Fakulta strojní, 2000, (pp 269-272),ISBN 80-7083-388-2.This paper deals with capabilities of the ANSYS system for hyper-elastic materials (rubber), and obtaining data from testingevaluating constants and with possibilities of errors making in them.

• Mácha, A.: Stress and deformation analysis of boiler for the steam garden locomotive, Engineeringmechanics 2000, Institute of Theoretical and Applied Mechanics Academy of Sciences of the CzechRepublic, Prague, 2000, (pp 157-162), ISBN 80-86246-07-8.This article deals with design and development of the steam boiler for the locomotive model. It contains classical calculationsfrom the standards and precising in the finite element method. Loading are applicated by the internal pressure, no temperaturestresses.

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• Bureš, M., Barbora, J.: Controlled vibro-isolation systems - experimental background for researchand teaching at TU Liberec, XLI. Medzinárodná konferencia katedier častí a mechanizmov strojovKošice, TU v Košicích, Strojnická fakulta, 2000, (pp 34-37), ISBN 80-7099-480-0.This article informs about realisation of physical model of a quarter of vehicle which enables to study influence of multi-parametric regulation to the vibration transfer of sprung mass and interaction between wheal and the roadway. The model is alsoused as an educational equipment for comparison of results of calculation simulations and real system behaviour. It is a way forcreation of correct relation of simulation methods evaluation.

• Honců, J., Kulhánková, J.: Reasonable design guide for helical spring in restrictive conditions, XLI.Medzinárodná konferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnickáfakulta, 2000, (pp 113-116), ISBN 80-7099-480-0.This article describes the method of successive steps, which result in reasonable design of helical spring.

• Kubík, J.: Verification of stress concentration design factor curves of graded shafts at tensilestress, XLI. Medzinárodná konferencia katedier častí a mechanizmov strojov Košice, TU v Košicích,Strojnická fakulta, 2000, (pp 177-180), ISBN 80-7099-480-0.The article deals with tension of graded shafts with radius fillet. The curves of stress concentration design factor α, of theseshafts have been already found and were publicised in many technical publications. Verification of these curves is done by finiteelement method. At the simulation, elements in the mesh in place of expected maximum tension were efficiently concentrated.The maximum tensions are used for calculation the design factors form these coefficient there obtained curves that arecompared with publicised ones.

• Mácha, A.: The steam garden locomotive boiler - reduction of stress concentration near stemples,XLI. Medzinárodná konferencia katedier častí a mechanizmov strojov Košice, TU v Košicích,Strojnická fakulta, 2000, (pp 190-193), ISBN 80-7099-480-0.This article deals with construction of boiler for the steam garden locomotive (gauge 7 1/4"). It calculates stresses in the places ofattachments of stemples and occasions to reduce it by using underlies. It calculates with imperfect welds.

• Ševčík, L.: General methods of design of shape complicated volume models, XLI. Medzinárodnákonferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnická fakulta, 2000, (pp337-340), ISBN 80-7099-480-0.In this paper are shown the possibilities of modification of profile active flank tooth. The reason for this modification is to searchoptimal shape of profile active flank tooth, which enables to improve shot conditions and at the same time to decrease contactstresses in the region of contact cykloidal teeth.

• Pešík, L., Němeček, P.: Identification of dynamic characteristics of bicycle, XLI. Medzinárodnákonferencia katedier častí a mechanizmov strojov Košice, TU v Košicích, Strojnická fakulta, 2000, (pp249-252), ISBN 80-7099-480-0.The large using of bicycles not only as any conveyance but also as a means of sport activities brings a need to check theirdynamic characteristics. There is an impact of vibration on human body through handlebars and seat. The fundamental source ofthis vibration is the pneumatic type and the road surface too. The bicycle should be a vibro-isolation system between the roadand the human body. For this purchase, there must be known the dynamic characteristics in order to find an optimal design ofthe frame and other parts of the bicycle. It does not exist a general method for a setting of the parameters so as to minimise theresponse on the ground displacement excitation. The article describes an introduction into these problems. There are measuredand calculated the transfer functions between different places of the systems. Only some of them are discussed here and showsome directions for to solution of this assignment.

• Kubík, J.: Stress concentration design factors for tension of bars with circular cross section and F-shape or G-shape recess, Engineering mechanics 2000, Institute of Theoretical and Applied MechanicsAcademy of Sciences of the Czech Republic, Prague, 2000, (pp 51-56), ISBN 80-86246-07-8.These article is about the recess strength of bars with F-shape and G-shape. Maximum stresses of these bars are determined bythe finite element method {FEM}. This stresses are used for calculating of the shape coefficient for tension (compression). Atthe simulation, elements in the mesh were efficiently concentrated. Results of analysis will give the courses of the shapecoefficients for bars. It can help to design this details more effectively.

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KOM - Department of Machining and assembly

Head: Assoc. Prof. Vladimir GABRIEL, M.Sc., Ph.D.Telephone: +42 - 48 – 5353363E-Mail: vladimir.gabriel@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353361E-Mail: hana.jenikova@vslib.czFax: +42 - 48 – 5105882

Designing, testing and optimisation of cutting tools, cutting conditions, evaluation of cutting ability andreliability of cutting tools, determination of machinability of materials.Measurement of cutting process dynamics.Shopfloor measurements of dimensions, angles, surface quality, the Shopfloor gauges calibration.Consultancy in TQM (Total Quality Management).Creation of supporting programmes for CAD- CADKEY.Courses for industry in: Engineering metrology, New modern cutting tools in production, Calibration ofshop-floor gauges.

• Čáp, D.: The Simulation of Stress and Temperature Field of Cutting Process., Strojírenskátechnologie (Manufacturing Technology)., Ústav techniky a řízení výroby (Institute of Technology andProduction Management), UJEP Ústí nad Labem, 2000, pp. 10-14, ISSN 1211-4162, (in Czech).The allowance treats of the simulation of orthogonal cutting process by finite element method (FEM). The software MARC isused for the simulation. The results of the simulation are stress field and temperature field.

• Žižka, J.: Application of the Accoustic Emission Phenomenon for Cutting Process Monitoring.,Seminar of PJIIT and JICA [Lecture], Warsaw, June 15, 2000, pp. 18, (in English).Contribution showing a summary of cutting processes monitoring by means of the acoustic emission phenomenon which were ina laboratory of the Department Machining and Assembly recently applicated. The work summarize pieces of knowledge fromexperimental works in this field of research.

• Žižka, J.: From Skills over the Empirical Knowledge to Intelligent Machining., Proceedings of the2nd International Conference on Formal Methods and Intelligent Techniques in Control, DecisionMaking, Multimedia and Probotics., PJIIT & JICA Warsaw, October 2000, pp. 238-252, ISBN 83-904403-2-6, (in English).A basic requirement for increasing the produktivity of latest machines is the ability to operate them in the unattended, orminimally-attended condition. Monitoring and supervision is an important function in manufacturing systems in order to keepproductivity and quality at very high level. Future systems demands are derived from the changes in production. It is shown anevolution from manual machine to an intelligent machine. Moreover, modern manufacturing equipment has to become more andmore flexible and has to run automatically. In the end of this article is shown an experience with the amplitude analysis ofacoustic emission signal for cutting tool wear monitoring. The obtained results give optimistic outcomes.

• Gabriel, V., Holub, L., Jersák, J.: Check property of cutting oil on turning operation., Report2018/2360, TU Liberec, 2000, pp. 181, (in Czech).The report contains sets of experiments what was aimed to estimate properties of cutting oils from energetic parameters ofmachining, surface roughness and tool wear points of view.

• Gabriel, V., Jersák, J.: Machining – Teaching texts for TOS Varnsdorf., TU Liberec, 2000, pp. 86,(in Czech).The teaching texts designated to TOS Varnsdorf labours, contains basic information about cutting processes, nonconventionalcutting methods and new trends in machining.

• Gabriel, V., Jersák, J.: Multiparametrical monitoring of surface grinding process., Proceedings ofthe International Congress on Machine Tools, Automation and Robotics in Mechanical Engineering -MATAR., ČVUT Praha, 2000, pp. 148-153, ISBN 80-238-5540-9, (in Czech).Monitoring of main parameters of grinding process gives an information about cutting tool condition. In the paper are describedmonitoring systemes and methods of data processing used in the Department of Machining and Assembly of TU Liberec.

• Jersák, J.: Beitrag zu der Dreidimensioinalen Simulation des Schleifprozesses – Contribution to 3Dsimulation of a grinding process., [Lecture on Czech-German mathematical seminar]. FP TU Liberec,2000, (in German).The article presents a mathematical modelling method of the grinding proces. The workpiece and the grinding wheel interactionis described by mathematical formulas and the characteristic parameters of grinding process are evaluated.

• Řasa, J., Gabriel, V.: Machining Engineering Technology 3. – 1st Part: Methods, Machine Toolsand Cutting Tools., 1st edition, Scientia, s.r.o., Praha, 2000, pp. 256, ISBN 80-7183-207-3, (in Czech).The textbook explains the basics of material preparing, principels of materials cutting and machining of metals, wood, plasticsand composites also including finishing methods of machining processes.

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KSD - Department of Transport machines

Head: Prof. Stanislav BEROUN, M.Sc., Ph.D.Telephone: +42 - 48 – 5353143E-Mail: stanislav.beroun@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353130E-Mail: barbora.kovarova@vslib.czFax: +42 - 48 – 5105882

Alternative fuels, reduction of exhaust emission of ICI (internal combustion engines). Valuable results wereachieved in conversion of diesel engines to gas (LPG, natural gas) engines. Research and development arecarried out for engine manufacturers (SKODA, LIAZ) and for local transports.According to the departments drawings there were more than 50 buses altered run-on LPG. Department isresponsible for State accredited testing laboratory No. 232, having testing equipment for measurement ofexhaust emissions within laboratory or on site.Stress analysis of structures, their optimisation, mainly of carriages and trails of trucks. Calculations of gearmechanisms, and hydrostatic transmissions.Defining of causes and sources of machines noise and vibrations.Top class measuring equipment and programmes for analysis and evaluation of noise and vibrations ofmachines and equipment. Vibration transfer on human body, Vibrodiagnostics, Modal analysis, The processvibration forms.New machine acceptance methods, measurement of acoustic power due to ISO 9614-2 CE evaluation.

• Beroun, S. a kol.: Scientific-research activity of the Department of Transport Machines, Faculty ofMechanical Engineering - Technical University of Liberec at the field of the vehicles engines.(Project LB00B073). Vedecké listy Žilinskej univerzity 2000. Žilinská univerzita, Žilina, SR, (pp 9).The article decsribes the scientific-research activity at the field of the vehicles engines and shows the results of research work onbus gas engines from research and testing laboratory of the combustion engines on Technical University of Liberec. Theattention is paied to reduce of the exhaust emissions from motor vehicles by means of the gas fuelled engines (by conversion ofdiesel engines to gas fuelled spark ignition engines), especially for bus and municipal lorries transport. The article presents alsopower, emissions and economical parameters of the gas fuelled bus engines developed at research laboratory of combustionengines on TU Liberec.

• Beroun, S.: Using of LPG for the drive of the road vehicles. Alternativní energie, III. ročník 4/2000,CEMC - České ekologické manažerské centrum. Praha, ČR (pp 14 - 16), ISSN 1212-1673.The article occupies with the LPG as the motor fuel, stresses the requirement on the qualitive parameters of LPG for the workingreliability of gas engine and explains the right adjustment of the gas engines on LPG from point of view of the power andpollution parameters.

• Beroun, S., Scholz, C.: Problems with LPG as motor fuel. Ropa a uhlie. Apr-00, Slovnaft VÚRUP,a.s. Bratislava, SROV. (pp 10), ISSN 1335-1141.The article shows the LPG as motor fuel with very good quality and the important requirements oh the cleanlines of LPG arereminded. On the own experience with gas fuelled bus engines on LPG are described the problems with non-quality of LPG onfuel systems (lifetimes of rubber parts, adjust of gas fuel pressure stability) and engine (power and emission parametersreliability). The article also shows, that the norm EN 589 is not the guarantee for problemless of gas (LPG) engine operation.

• Salhab, Z., Beroun, S.: The ecological effect of gas fuelled engines. Palestine Engineer Magazine,46.vydání-září 2000, Společnost palest. inženýrů, Jerusalem, Palestina.

• Němeček, P., Laurin J.: Natural gas reduces vehicle noise. Plyn. Český plynárenský a naftový svazPraha, ČR. (pp 15-16), ISSN 0032-1761.Article describes noise reduction of a bus and lorry when the fuel was changed from diesel iol to natural gas.

• Tomeh, E.: Introduction of technical diagnostics in the factory of agregates production M2ŠKODA-AUTO Mladá Boleslav. Liberec 2000, ŠKODA-AUTO Mladá Boleslav, ČR.The Attention was directed to: deepening the theoretical knowledge in the area of vibration diagnostics, creation of a technicaldiagnostics team, choice the measuring localities, the method of fixing the accelerometers, acquiring measuring technics andcomputing technics, and managing the analyser and softwares that have been bought, signals analysis and the theorie offrequency analysis.

• Tomeh, E.: Vibration measuring of the mashine FORTUNA - the main causes of the actualproblems. SM 2000 – 368, Liberec. TU 2000, ŠKODA -AUTO Mladá Boleslav, ČR, 2000.On the basis of the analysis of measured vibration spectra, the research presents the probable causes of defective manufacturingof cam shaft of mashine tools FortunaBruska fmt 343 ( on the third cam on the right side, there is a deformation of the cam partof the curve). In the research, there is also a suggestion of concrete precautions to increase the manufacturing quality.

• Tomeh, E.: The vibration analysis of machine tool KRAUSE - appreciation of the technicalcondition. ŠKODA-AUTO Mladá Boleslav, ČR, 2000.On the basis of the analysis of measured vibration spectra, the research presents the probable causes of plate disruption of themashine tool small spindle during the connecting rod drilling. In the research, there is also a suggestion of concrete precautionsto increase operation reliability and an evaluation of the basic operation effects on the dynamical load of the spindle bearings andelectromotor.

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• Tomeh, E.: The taking on of machine AI-Z 609 Zbrojovka Brno. ŠKODA-AUTO Mladá BoleslavČR, 2000.In the report, there is an analysis of the entry vibration measurement on a single purpose machine of type AI Z609A/3 forfinishing the ends a driving shaft. This measurement was effectuated during running separate spindles without load. There is alsoan evaluation of the machine technical condition in dependance to the probability of operating life and reliability.

• Tomeh, E.: Preparation of standards CSN and ISO in the technical diagnostics area for measuringand analysis vibration in the factory ŠKODA-AUTO Mladá Boleslav. ŠKODA- AUTO MladáBoleslav, ČR, 2000.The report includes the norms CSN and ISO in the technical diagnostics area for measurement and analysis of vibration onmachines tools in the factory SKODA Auto Mladá Boleslav.

• Scholz, C.: About the problem of the electronics utilization of spark-ignition gaseous engines. (Habilitation thesis) TUL Liberec, 2000.

• Bartoníček, L., Laurin. J.: The Bus Engine fuelled NGV. XXXI. Konference kateder a pracovisťspalovacích motorů českých a slovenských vysokých škol., Žilinská univerzita, KKVMZ, Žilina, SR,2000, (pp 201-206).In this contribution two concepts of buses gaseous engine fuelled NG which had been generated at Technical University inLiberec, are compared and critical evaluated.

• Scholz, C., Blažek, J.: Influence of whirl and compression on hydrogen combustion inexperimental piston engine, KOKA 2000, XXXI. konferencia katedier a pracovísk spal`ovacíchmotorov českých a slovenských vysokých škôl. Žilinská univerzita, KKVMZ, Žilina, SR. 2000, (pp153-158).The Contribution gathers from a series of measurements, which were pursued in 1999 at Technical University in Liberec byoperetion of experimentalsingle-cylinder engine fuelled hydrogen.

• Beroun, S., Bartoníček, L., Scholz, C.: Gas Fuelled Engines and Their Pollution Parameters, VthInternational Conference "Gas Engines 2000", Polytechnic Institute of Czestochova, WydawnictvoPolitechniki Czestochowskiej, Czestochowa, Polsko, 2000, (pp 7 - 14).Exhaust emissions from motor vehicles are the serious hygienic and environmental endangerment for greater town inhibitants,the exhaust pollutants affect negativ on spa or holiday resort. A significant ecological effect is reached by conversion of dieselengines to gas fuelled spark ignition (SI) engines: it concerns especially for bus and municipal lorries transport. The paper showsthe results of research work on bus gas engines from research and testing laboratory combustion engines on Technical Universityof Liberec. The attention is paied to combustion chamber form influence (specific turbulent energy in combustion chamber) onpower, emissions and economical parameters.

• Beroun, S., Tuček, G.: Conversion of the bus town transport to gas drive employing the LPG. 3thInternational Conference Environmental Friendly City Traffic, State Environmental Fund CZ, Societyfor a Permanently Preservable Life. Karlovy Vary. ČR. 2000. (pp 159 - 169).Material shows the technical solution of the urban bus transport (more than 90 buses with gas fuelled engines on LPG) for townsMost and Litvínov. Paper shows also the some problems with nonquality of the LPG as the motor fuels and brings the results ofthe emissions checking on the operated buses.

• Beroun, S.: Importance of the Combustion Chamber Form for the Quality of the Gas Engines.(Project MSM 242100001) 7th International Scientific-Technical Conference of Internal CombustionEngines., Technical University of Sofia, Sofia, Bulharsko, 2000, (pp 4 - 8).An effective realisation of the working cycle in the piston combustion engines depends in a considerable degree upon thesolution of the basic phase of the working cycle, namely upon the combustion of the mixture of fuel with air in the enginecylinder. The article points out the importance of the turbulence in the combustion chamber of a supercharged gas engine at theoptimisation of its energetic, performance and ecological parameters.

• Beroun, S., Martins, J. J. G.: The Development of Gas (CNG, LPG and H2) Engines for Buses andTrucks and their Emission and Cycle Variability Characteristics, SAE World Congress 2001,Society of Automotive Engineers, Detroit, USA. 2000, (pp 9).Few diesel vehicles engines from Czech production have been converted into gas (LPG, CNG) fuelled SI engines. The higherpower engines (peMAX > 1 MPa) used the concept λ >>1 in turbocharging-intercooler and with oxidation catalysts mode withtotal (max) efficiency of about 38%. For lower power engines (peMAX < 1 MPa) the more suitable concept was using λ = 1 innaturally aspirated (atmospheric) mode with 3-way catalysts. Most of the work included the development of the engines to workon Natural Gas (CNG) and LPG for buses and medium trucks. Some laboratory tests were done also with Hydrogen and NaturalGas on the laboratory single-cylinder engine.

• Bartoníček, L., Beroun, S., Scholz, C., Myška, M.: Low emissions gas engines with 210 kW powerfor the heavy duty trucks. Konference automobilového průmyslu AUTOSYMPO 2000, Českáautomobilová společnost, Praha, ČR. 2000, (pp 81 - 88).The paper shows the basic technical dates about solution of the low emissions gas engines with 210 kW power for the heavy dutytrucks: the spark ignition turbocharging conception with intercooler, very lean mixture air/natural gas, electronic control systemof the mixture forming and ignition. The attention is paied to power, emissions and economical parameters.

• Beroun, S., Scholz, C.: Conditions for using of Hydrogen for drive of vehicles. Mezinárodní vědeckákonference, VŠB - TU Ostrava, Fakulta strojní - sekce 3 Doprava , Fakulta strojní, VŠB TU Ostrava,Ostrava, ČR. 2000. (pp 7-14).The article shows the hydrogen as a motor fuel for future. The authors of this paper work on the national grant research project"Piston engine with the hydrogen combustion - drive unit for future" and the results from research programme on single cylindertesting engine (research of the combustion of very lean hydrogen-air mixture) are showed at the paper. The basic idea about ultralow emissions of hydrogen piston engines is also described.

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• Beroun, S., Bartoníček, L.: Energetic, power and pollutions parameters of gas fuelled bus engines.KOKA 2000, XXXI. mezinárodní konference kateder a pracovišť spalovacích motorů českých aslovenských vysokých škol., Žilinská univerzita, Žilina, SR. 2000, (pp 195 - 200).The paper shows the results of research work on gas fuelled bus engines from research and testing laboratory combustion enginesin Technical University of Liberec. The attention is paied to energetic (total efficiency of engines), power and pollutionsparameters (namely to particle matter and hygienic dangereous organic matter) of gas engines. The article also shows thecomparition of the engines with the stochiometric mixture combustion and with the very lean mixture combustion.

• Beroun, S., Scholz, C.: Problems with LPG as motor fuel. 4. mezinárodní sympozium Motor Fuels2000, Slovenská spoločnosť priemyselnej chémie- Slovnaft Bratislava., Bratislava, SR. 2000, (pp 162 -171).The article shows the LPG as motor fuel with very good quality and the important requirements oh the cleanlines of LPG arereminded. On the own experience with gas fuelled bus engines on LPG are described the problems with non-quality of LPG onfuel systems (lifetimes of rubber parts, adjust of gas fuel pressure stability) and engine (power and emission parametersreliability). The article also shows, that the norm EN 589 is not the guarantee for problemless of gas (LPG) engine operation.

• Beroun, S., Tuček, G.: Conversion of the bus town transport to gas drive employing the LPG. 3.mezinárodní konference ekologické městské dopravy, Státní fond životního prostředí Praha aSpolečnost pro trvale udržitelný život. Karlovy Vary, Karlovy Vary, ČR. 2000. (pp 149 - 158).Material shows the technical solution of the urban bus transport (more than 90 buses with gas fuelled engines on LPG) for townsMost and Litvínov. Paper shows also the some problems with nonquality of the LPG as the motor fuels and brings the results ofthe emissions checking on the operated buses.

• Salhab, Z.: Vehicles exhaust gases reduction using alternative fuels. The First PalestinianEnvronmental Symposium in Hebron, Palestine Polytechnic University Hebron, 2000.In the article have been mentioned the exhaust gases components,their influence on the health and environment.Also werementioned the kinds of alternative fuels,thier advantages and disadvantages,thier affect on exhaust gases forming compared toclassical fuels.

• Laurin, J.: LNG fuel for vehicle engines. Mezinárodne sympózium Motorové palivá 2000. Slovnaft,a.s. Bratislava, Bratislava , SR, 2000. (p. 173-186).The paper deals with problems and conditions of liquified natural gas (LNG) use as vehicle motor fuel and is focused oncity buses. Results of major european projects of LNG use in transportation and overall experiences from realizedprojects are stated. Basic conceptual solutions of natural gas spark ignition engines are described together with theirconstruction and operating parameters. LNG cryogenic fuel tanks are characterized. For broader application of LNG asmotor fuel, it is necessary to have LNG fueling stations and LNG sources for acceptable prices.

• Laurin, J.: Gas engines for buses. 3. mezinárodní konference ekologické městské dopravy , Státní fondživotního prostředí ČR, Karlovy Vary,ČR. Karlovy Vary, 2000, (p 141-148).The study presented here considers in brief the conditions of the use of gas fuels for powering buses and it summarises thecharacteristics of the engine gas fuels for two basic design concepts of gas engines. It also includes the principal design andoperational parameters of the three types of bus gas engines developed in the Technical University in Liberec, which have beensuccessfully employed in the city buses of several transport corporations both in the Czech Republic and in Slovakia. Specialattention is also paid to harmful emissions, i.e. to the harmful exhaust substances and noise.

• Laurin, J.: LNG city buses. (Study.) SM 367/2000 TU v Liberci, Liberec 2000.The studie deals with problems and conditions of liquified natural gas (LNG) use as motor fuel for city buses. Results of majoreuropean projects of LNG use in transportation and overall experiences from realized projects are stated. Basic conceptualsolutions of natural gas spark ignition engines are described together with their construction and operating parameters. LNGcryogenic fuel tanks are characterized.

• Beneš, Š.: Experimental Modal Analysis of Non-Linear Mechanical Systems, Technická diagnostikastrojů a výrobních zařízení DIAGO „2000“, Vysoká škola báňská – Technická univerzita Ostrava,Asociace technických diagnostiků České Republiky – Zlín IMEKO - ČR, Ostrava, ČR. 2000, (pp 83-90).It also enables us to construct a powerful tool, the modal model, with we can investigate the effect of structural modofications, orpredict how te structure will perform under changed operating conditions.

• Beneš, Š.: Measurements of vibrations for design of elastic seating of machines, Technickádiagnostika strojů a výrobních zařízení DIAGO „2000“, Vysoká škola báňská – Technická univerzitaOstrava,Asociace technických diagnostiků České Republiky – Zlín IMEKO - ČR, Ostrava, ČR. 2000,(pp 90-94).The basic principle of vibration isolation now consists in selecting a spring mounting so that the natural frequency of the spring-mass system is considerably lower than the lowest frequency component in the forcing spectrum produced by the machine.

• Bartoníček, L., Laurin, J.: Gas engines for drive vehicles. Mezinárodní vědecká konference - sekce 3doprava, VŠB - TUO Ostrava. Ostrava, 2000.The paper is focused on spark ignition natural gas engines. One of them combusts stechiometric fuel mixture and the other onelean fuel mixture. The paper describes configuration, construction and operating parameters of Liaz ML 636 NG (165 kW /2000 min-1, superchanged, lean mixture, oxidative catalyser) and Liaz ML 636 NGS (169 kW / 2000 min-1, stechiometricmixture, natural aspirated, 3-way catalyser ) bus engines. Both engines have been developed at the Technical university inLiberec, based on the originally diesel engine Liaz ML 636. The replacement diesel of oil by natural gas resulted in significantdecrease of noxious gases ( CO, NOx ) and particles in the exhaust gases.

• Moc, L.: Contribution of evaluating variability of combustion engine emission in cogeneratingunit. Spolehlivost a diagnostika 2000. Vojenská akademie Brno, ČR. Brno, 2000, (pp 9).In the contribution, the process of gas emission evaluationof exhaust gases of combustion engine, which is considered as anengine drive for cogenerating units. Also the variability of measuring parameters of gaseous engine is in detail quantfized.

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• Blažek, J.: Hydrogen exploitation in transportation. II. Medzinárodná vedecká konferencia mladých2000, SPU Nitra (Račková dolina), Slovenská pol`nohospodarská univerzita v Nitre, Nitra, SR. 2000,(pp 20-25).Alternative fuels are today coming to the front of interest of experts from the whole world. In future is it possible to use hydrogenas the most accessible renewable energy source, which wouldn’t pollute our environment. At Technical University are conductedseries of measurement on experimental single-cylinder engine, which burns hydrogen fuel.

• Brabec, P.: The strength analysis of component of axle, II. Medzinárodná vedecká konferenciamladých 2000, SPU Nitra (Račková dolina), Slovenská pol`nohospodarská univerzita v Nitre, Nitra,SR. 2000, (pp 102 - 107).The topic of engaged task has been strength analysis of shoulder of frontal axle McPherson. First of all was necessary to assignpowers applied on shoulder in the course of different methods of driving and to choose important conditions for calculation.Then model was created in program ProENGINEER and later this model was converted into program ProMECHANIKA. Themodel was loaded by statically powers in this program and then the deformations were rated. The reduce tension was rated bycourse of Von Mises.

• Voženílek, R.: The optimalization of a municipal vehicle`s shovel, II. Medzinárodná vedeckákonferencia mladých 2000, SPU Nitra (Račková dolina), Slovenská pol`nohospodarská univerzita vNitre, Nitra, SR. 2000, (pp 168 - 173). The work make the suggestion of a municipal vehicle’s shovel by programs ProENGINEER and ProMECHANICA. There wasmade optimal model with the lowest weight and with optimal stress.

• Tomeh, E., Salhab, Z.: The possibilities of ventilators dynamical tuning. Technická diagnostikastrojů a výrobních zařízení DIAGO „2000“, Vysoká škola báňská – Technická univerzita Ostrava,Asociace technických diagnostiků České Republiky – Zlín IMEKO - ČR. Ostrava, ČR. 2000, (pp 107-113).On the basis of the measured operating deflection shapes on the ventilator, some measures were suggested to increase the torsionstiffness of the frame. After their realization together with decreasing the stiffness of IZTEKO elements, the anticipated benefitsweren’t achieved. Some alternative solutions to the actual problems are stated in the article.

• Tomeh, E.: Multimedial presentation of the successfully resolved tasks for students of technicaldiagnostics subject. Modernizace vysokoškolské výuky technických předmětů.. Vysoká školapedagogická v Hradci Králové, pedagogická fakulta, Hradec Králové, ČR. Hradec Králové 2000, (pp220-222).The actual shortage in professional literature in the area of utilizing and analyzing vibration on produced systems brought thedepartment of technical diagnostics to elaborate a large database of successfully solved practical problems, in a form appropriateto the present time. The acquired remarks are especially processed for the needs of teaching students in engineering and postgradual studies, example in the form of CD-Rom. There will be examples on CD-Rom about aroused problems, methods ofmeasuring and forms of analysis, condition before solving, and measurement of documented benefits for the ordering side.

• Tomeh, E.: The advantages of taking on new machines by measuring vibration and noise.Technická univerzita v Liberci. Liberec, ČR 2000. (pp 741-746).The measurement and analysis of vibration and noise on takeover of new machines and equipment is of considerable importanceand has many advantages. Concrete results of the cooperation with the technical diagnostics laboratory in this field helprecommending to the user the suitable working range and solving operatively any possible problems that could occur ontakeover.

• Beroun, S., Bartoníček, L., Scholz, C.: Ecological effect of the gas fuelled automobile traffic.(Annual report) SM 364/00.Technická univerzita v Liberci, Liberec 2000.Technical report summarizes the conditions for reaching to the technical and working quality of the gas fuelled heavy dutyvehicles (buses and trucks) from point of view to valid and expected regulation. The report proposes also the method for theworking emissions checking on the operated buses and trucks. The presented material shows, that technical solutions of themodern gas fuelled engines and the all systems for the automobile with the gas fuels represent the effective way for thesignificant reducing of the exhaust pollutions and reducing of the loading of the environment.

• Malý, M., Voženílek, R.: Brake disc. (Annual report), Technická univerzita v Liberci, SM 366/00,2000.Technical report includes analyze of calculation results (mechanical and temperatury load) on the brake discs by means of FEM.

• Beroun, S.: Temperature load of the automobile piston engine. Research report. Technickáuniverzita v Liberci, SM 382/2000, Liberec 2000.Report describes the temperature load mechanizm of the piston engine parts, the simulated calculation of the working cycle withthe tranfer of the heat between the cylinder charge and the walls of the cylinder. The examples of the temperature fields for theselected parts of the piston engines cylinder unit.

• Beroun, S., Scholz, C.: Analyse of the measurement results on the gas fuelled engine 12 C 28 GSG.Research report. Technická univerzita v Liberci, SM 382/2000 Liberec 2000.Analyse of the measurement results on the industry gas fuelled engine: with using of the measurement results and by the of themeans of the simulated calculation are done the survey of the cylinder filling (filling air and gas fuel) and the technicalarrangement for the next developing stage are proposed.

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KSK - Department of Glass and Ceramics machines

Head: Assoc. Prof. Frantisek NOVOTNY, M.Sc., Ph.D.Telephone: +42 - 48 – 5354103E-Mail: frantisek.novotny@vslib.cz

Secretariat: Telephone: +42 - 48 – 5354102E-Mail: jarmila.herzigova@vslib.czFax: +42 - 48 – 5354157

Design and project work in glass and ceramics machines development.Grippers and manipulation with industrial objects.Numerical simulation of thermal and stress fields, including viscoelastics processes.Courses in FESTO pneumatic mechanisms application.

• Matoušek, I.: The virtual modelling of the glass forming cycle, The Glass in the New Millenium -Challenges and Breakthrough Technologies, National Commite Netherlands Glass Industry,Amsterdam, Holandsko, 2000, (pp 30).In the contribution the practical and theoretical aspects of virtual modelling of glass forming processes are discussed. Thepossibilities of practical use of numerical simulation are demonstrated in the example of analysis of the course of forming cycleof glass product with complicated shape that has been done in pre-manufacture stages. The results of numerical analysis arecompared with operational measurements.

• Matoušek, I.: Approach to the optimisation of glass pressing cycle, The First Slovak GlassConference, Slovak Glass Society, Trenčín, Slovenská republika, 2000, (pp 86-98), ISBN 80-968392-1-7.In the paper an approach to the optimisation of the glass forming cycle is suggested. This approach is based on the detailedevaluation of the forming cycle course devised. The attention is focused especially on the optimisation of distribution and patternof temperature fields in forming tools.

• Steklý, J.: Numerical simulation of glass blowing process, The First Slovak Glass Conference, SlovakGlass Society, Trenčín, Slovenská republika, 2000, (pp 96-102), ISBN 80-968392-1-7.Problems of the numerical simulation of glass forming cycle, especially forming hollow glass products by the press and blowtechnique, are studied. The comprehensive numerical simulation of the press and blow process allows a detailed monitoring glassforming course in individual phases of the forming cycle, an evaluation of the effect of the particular technological parametersand their interactions on the forming cycle course as well as on the final product wall thickness distribution.

• Novotný, F., Horák, M.: Robot handling with glass pressings by hot end of lehr, Mezinárodnívědecká konference, výrobní systémy s průmyslovými roboty, sekce 5, Sborník anotací, Technickáuniversita Ostrava, Ostrava, Česká republika, 2000, (pp 40), ISBN 80-7078-799-6.In the paper possibilities of use of numerical simulation based on FEM for grasping of deformable objects are shown.Constitutive model of viscoelastic material with temperature dependent viscosity was used for specification of glass materialbehaviour. It was presumed for grasping elements to be ideally rigid.

• Novotný, F., Horák, M.: Gripping of hot glass pressings, The 8th International Conference on theTheory of Machines and Mechanisms, Technická univerzita v Liberci, Liberec, Česká republika, 2000,(pp 557-562), ISBN 80-7073-418-8.The paper deals using gripping elements for manipulation with the products on the warm end of production line in the glassindustry. Vacuum or mechanical-vacuum systems are basic principles of grippers. The high surface temperature of pressingswhen removed from moulds (ca 480°C to 540°C) is further raised in the fire polishing process and the temperature radiationloads the gripper. The manipulation with pressings is currently realized with the vacuum gripper for the top inside margin ofproduct. The vacuum works by large pressings (high up to 400 mm and heavy up to 3,5 kg) the deformation of the bottom. Thehigh temperature and low viscosity give raised to this effect. The gripper is supplied by the mechanical system gripping withcompliant fingers and the deformation of the bottom pressings is minimized. The contact of finger with the manipulation objectis simulated.

• Novotný F., Chomát A., Horák M.: Laboratory robot with inteligent pneumatic, Mezinárodnívědecká konference, sekce 5, Technická universita Ostrava, Ostrava, Česká republika, 2000, (pp 39),ISBN 80-7078-799-6.Possibilities of use of servo-pneumatic in actuation modular manipulators and experience with use of laboratory robot forteaching purposes are summarized in the paper. The manipulator is composed of two servo-axes (moving in the plane) and havethe double acting unit with the gripper on the end, that ensure movement in z-axis.

• Hotař, V., Lang, M., Chrpová, E.: Teoretical aspects of project "Noviscam", ISQVPFD 2000,Faculty of Mechanical Engineering, Lublaň, Slovinsko, 2000, (pp 37-52), ISBN 961-6238-38-8,The paper describes theoretical background of the project Noviscam. The project Noviscam uses the fractal dimension and othermeasures for the control of the process. It consists of monitoring the process, generation of time series, estimation of the fractaldimension of the time series and analyses of the fractal dimension. We call this "Noviscam technique". For verification andcomparison of the analyses statistic and a power-spectral analysis have been used.

• Chrpová, E., Hotař, V., Lang, M.: Application of Noviscam technique and fractal dimension inpaper, glass and textile production processes, ISQVPFD 2001, Faculty of Mechanical Engineering,Lublaň, Slovinsko, 2000, (pp 86-98), ISBN 961-6238-38-8.

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Chaotic properties occur in many production processes. Technical university Liberec (Czech Republic), CeVis - UniversityBremen (Germany) and Filpap Steti (Czech Republic) apply "NOVISCAM technique" in a paper production process. Theprocess is fast, it has chaotic properties and it is difficult to control with standard tools of process control. The equipment torecord image data of the paper process is also used to record data of fast processes and production processes exhibiting chaoticfeatures in glass and textile industry. The text contains results of the analyses and presents other basic possibilities for theapplication of the fractal dimension in the on-line control of production processes such as detection and description of faults.

• Chrpová, E., Hotař, V.: Application of fractal dimension in textile production processes, 80th WorldConference, Manchester 2000, The Textile Institute, Manchester, Velká Británie, 2000, (pp 8), IBSN187-037245.The paper describes results of the project Noviscam and possibilities of application in textile production processes. The goal ofour work is to be able to monitoring and control the product and process with feedback to the production processes. For thesolution we use a fractal analysis that allows on-line evaluation.

• Novotný, F., Chomát, A.: Automatic handling with single thicknees sheets of glass, Mezinárodníkongres matar Praha 2000, České vysoké učení technické v Praze, Praha, Česká republika, 2000, (pp94-100), ISBN 80-238-5539-5.In this contribution the problems of handling with large thin sheets of glass in production of automotive glass-laminatedwindscreens connected with the tendency to minimise a thickness of glass sheets from thickness 2+2 to 2+1,6 mm and 2+1,1mm are presented. The possibilities of use of numerical simulation for evaluation of the development and course ofdisplacements during fast movement and subsequent optimisation of handling process and optimisation of design both grippersand peripheral equipment are shown.

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KTS - Department of Textile and clothing machines

Head: Assoc. Prof. Jaroslav BERAN, M.Sc., Ph.D.Telephone: +42 - 48 – 5353171E-Mail: jaroslav.beran@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353173E-Mail: vera.mejstrikova@vslib.czFax: +42 - 48 – 5105882

Development and design of functional units, applications of FEM., structural and dimensional optimisationof mechanisms, machines and equipment.Dynamic and stress analysis of machine units and individual elements.Experimental testing of kinematics and forces in machine elements.Courses in computer aid applications (Pro/MECHANICA, ALGOR)

• Beran, J., Kaniok, J., Kopal, J., Mrázek, J.,: Technical Dictionary, Encyklopedický dům s.r.o., Praha,Česká Republika, 2000.

• Čikl, Z.: Dynamic of Needle and Feed Control Mechanism of Sewing-Machine LADA, Študentskákonferencia "Strojárstvo 2000", requested lecture, 2000.In the first part, there is stated this search of needle and feed control mechanism, which is using by sewing-machine. In thesecond part, there is effected kinetostatics next to the static balance of needle and mechanism, which is using in optimizationprogram. This program minimizes reaction on common crank of these mechanisms addition make-up weight on shaft needlemechanism and on common crank of both mechanisms. Balancing of both mechanisms of sewing-machine is attested inexperimental parts.

• Mrázek, J.: Dynamics of Yarn Unwinding, TRANSFER 2000, Trenčín, Slovensko, 2000, (pp 83-88),ISBN 88-88914-26-4.This papers deals about unwinding dynamics problems on the yarn feeder. The results can be use for design of yarn feeder on theknitting machines.

• Bílek, M.: Dynamics Analysis of Heald of Weaving Looms, Aplikovaná mechanika 2000, Liberec,Česká Republika, 2000, (pp 25-31), ISBN 80-7083-388-2.The paper describes a heald analysis during duty cycle. Mathematical model of the shedding mechanism is investigated with adesign clearence between heald and heald rod. Model is used for dynamic analysis of the heald during duty cycle.

• Karpíšek, S.: Analysis of Healdshaft, Aplikovaná mechanika 2000, Liberec, Česká Republika, 2000,(pp 145-150), ISBN 80-7083-388-2.This paper deals with analysis of the shaft frame. There is created mathematician model of the shaft frame with relevant loadthere. By means of this model are computed deformations of the upper and lower shaft stave in dependence of the constructparameters. The result is suggestion of the optimal construct parameters.

• Konečný, M., Dynamics Analysis of Sewing-Machine Frame, Aplikovaná mechanika 2000, Liberec,Česká Republika, 2000, (pp 195-198), ISBN 80-7083-388-2.This work contains analysis of vibration sewing-machine Lada 607. Construction modifications of the sewing machine leads toreduction of dynamic load of the frame. Needle mechanism is source of vibration of sewing machine. Next sources influencedynamic of this mechanism. Excitation reactions are applied from crank of needle mechanism because model of this sewing-machine is simpler for observation.

• Kovář, Š.: The Analysis Frame Textile Loom ALPHA 190, Aplikovaná mechanika 2000, Liberec,Česká Republika, 2000, (pp 95-100), ISBN 80-7083-388-2.This project deals with the analysis of deformation of the frame of weaving machine ALPHA with stress to be put on theinteraction with the weft beating device. Two main possibilities are taken into account - one box of beating device in the centreof the machine or two boxes at the side plates. The project provides the foundation for the design of other machines alike andcomes to the result, that it is better to use two boxes.

• Beran, J.: Controlled Spindle Revolutions for the Ring Twisting Machine, VIII. InternationalConference on the Theory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 95-100),ISBN 80-7083-418-8.In this article the theory of the ballooning yarn has been adapted to the controlled spindle revolutions for the ring twistingmachine. The work is focused on the radius of the package as the boundary condition, which is changing during the wholewinding process. The dependence of spindle revolutions on the radius of the package, where the yarn tension is constant duringthe winding process, is determinated using the mathematical model of ballooning yarn.

• Bílek, M.: Possibility of Increase of Healdshaft Stiffness, VIII. International Conference on theTheory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 101-106), ISBN 80-7083-418-8.The paper describes dynamic analysis of healdshaft. System of healds which fixed in shaft is simulated by system of springs.

• Bílek, M., Jágrová, J., Mrázek, M.: Stifness Computation of the Weaving Machine Heald ShaftRod, VIII. International Conference on the Theory of Machines and Mechanisms, Liberec, ČeskáRepublika, 2000, (pp 107-112), ISBN 80-7083-418-8.

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There is a approximate computation of stifness of heald shaft rod crossection which is compossed of aluminium profile andsupporting steel wire.

• Karpíšek, S.: Dynamic Balancing of Feed Control and Needle Mechanism of Sewing Machine,VIII. International Conference on the Theory of Machines and Mechanisms, Liberec, Česká Republika,2000, (pp 293-298), ISBN 80-7083-418-8.This article deals with dynamic balancing of feed control and needle mechanism of sewing machine. By means of programsPro/Engineer and Pro/Mechanica was modeled parametric model of feed control and needle mechanism. Mechanism wasoptimized by modification of some construct parameters. Goal of optimization was reduction of reaction force of mechanism.

• Konečný, M.: Dynamics Analysis of Sewing-Machine Frames, VIII. International Conference on theTheory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 321-326), ISBN 80-7083-418-8.This work contains analysis of vibration sewing-machine Lada 607. Construction modifications of the sewing machine leads toreduction of dynamic load of the frame. Needle mechanism is source of vibration of sewing machine. Next sources influencedynamic of this mechanism. Excitation reactions are applied from crank of needle mechanism because model of this sewing-machine is simpler for observation.

• Kovář, Š.: The Analysis Frame Textile Loom ALPHA 190, VIII. International Conference on theTheory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 335-340), ISBN 80-7083-418-8.This project deals with the analysis of deformation of the frame of weaving machine ALPHA with stress to be put on theinteraction with the weft beating device. Two main possibilities are taken into account - one box of beating device in the centreof the machine or two boxes at the side plates. The project provides the foundation for the design of other machines alike andcomes to the result, that it is better to use two boxes.

• Mrázek, J., Bílek, M.: Lifting Mechanism Optimization of Healdschaft Testing Table , VIII.International Conference on the Theory of Machines and Mechanisms, Liberec, Česká Republika, 2000,(pp 473-476), ISBN 80-7083-418-8.The contribution discusses a structural project of shedding motion with a straight line motion mechanism realizing straight linemotion of a heald shaft without guides. Computer optimisation of mechanism parametres is made and maximal deviations fromstraight line displacement are 0,09 mm. The developed optimized shedding mechanism will be used for healdschaft testingtable.

• Mrázek, J., Bílek, M.: Load Simulation of Shedding Motion , VIII. International Conference on theTheory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 477-484), ISBN 80-7083-418-8.For increase in the efficiency of the weaving loom with outside shedding motion, brings with in higher degree of dynamicproblem on the mechanic of system of shedding motion - lifting mechanism - healdschaft - warp. This paper deals with itsolution. The mechanism of the testing table can simulate loading from elastic warp and healdschaft. Different rigidity andpretension of testing table spring ensure aproximately all possibilities of outside shedding motion loading.

• Kaniok, J., Kracík, V.: Precision Cross Winding Process Control, VIII. International Conference onthe Theory of Machines and Mechanisms, Liberec, Česká Republika, 2000, (pp 287-292), ISBN 80-7083-418-9.The paper deals about new knowledge from she theory of the precision cross winding and its application for winding control ofpackage. Based on the analysis here the new design of cross winding mechanism with the constant density of winding in thewhole package is presented.

• Kracík, V., Tůma, L., Beran, J.: Mathematical Model for the Unwinding of Yarn From Package,VIII. International Conference on the Theory of Machines and Mechanisms, Liberec, Česká Republika,2000, (pp 341-346), ISBN 80-7083-418-8.In this article the opening study of the unwinding of yarns from packages is presented. Mathematical model describes the wholeprocess starting with zero initial velocity of the yarn up to stationary motion of the yarn. The net’s method is used formathematical formulation of investigated problem. The yarn is represented by a chain made up of points with concentrated massand the Lagrange´s equations of motion are derived. Mathematical model is used for creation of the computer program andenables computer simulation.

• Beran, J.: Analysis of Reaction Forces for Ring-Traveler System, TRANSFER 2000, Trenčín,Slovensko, 2000, (pp 19-24), ISBN 88-88914-26-4.The paper presents a new approach to analyse of reaction forces for ring-traveller system in twisting machine. The theory of theballooning yarn has been adapted to the calculation of reactions. The stationary mathematical model of yarn balloon is used forthe numerical simulation of yarn tension acting at the traveller. The motion equation is developed for traveller with two reactionforces. The effects of the spindle revolutions on the reactions are shown and discussed. The effect of the balloon control ring isshown to be reducing the reaction forces of traveller.

• Beran, J., Bílek, M.: Mathematical Modelling of Basics Mechanisms of Weaving Maschine,TRANSFER 2000, Trenčín, Slovensko, 2000, (pp 25-30), ISBN 88-88914-26-4.The paper is focused on the modelling of shedding mechanism. Two types of mechanism model was developed. The first onewas created by means of the Lagrange's equation of the second type and the second one was created using ProMECHANICAsoftware. Developed models include some flexible links and clearances in kinematics pairs. There is performed the validation ofthe models comparing the results of numerical simulation with experimental data.

• Karpíšek, S.: Use CAD Systems for Dynamic Balancing of Mechanism of Sewing Machine,TRANSFER 2000, Trenčín, Slovensko, 2000, (pp 57-60), ISBN 88-88914-26-4.This article deals with dynamic balancing of feed control and needle mechanism of sewing machine. By means of programsPro/Engineer and Pro/Mechanica was modeled parametric model of feed control and needle mechanism. Mechanism wasoptimized by modification of some construct parameters. Goal of optimization was reduction of reaction force of mechanism.

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• Kaniok, J., Kracík, V.: Transmission Calculation and Design for Winding Process Control,TRANSFER 2000, Trenčín, Slovensko, 2000, (pp 61-64), ISBN 88-88914-26-4.The paper deals about new knowledge from the theory of the precision cross winding and its application for winding control ofpackage. Based on the analysis here the new design of transmition for winding is presented.

• Konečný, M.: Dynamics Analysis of Sewing-Machine Frames, TRANSFER 2000, Trenčín,Slovensko, 2000, (pp 65-70), ISBN 88-88914-26-4.This work contains analysis of vibration sewing-machine Lada 607. Construction modifications of the sewing machine leads toreduction of dynamic load of the frame. Needle mechanism is source of vibration of sewing machine. Next sources influencedynamic of this mechanism. Excitation reactions are applied from crank of needle mechanism because model of this sewing-machine is simpler for observation.

• Kovář, Š.: Textile Loom Frames, TRANSFER 2000, Trenčín, Slovensko, 2000, (pp 71-76), ISBN 88-88914-26-4.This paper deals with the modal analysis on frame high-speed loom ALPHA 190. The modal analysis is implement onmathematical model in software ProMechanica-structure and ProEngineer. Computational procedure is implement of twomathematical models and result is confronted with behaviour of the basic mechanism of loom ALPHA 190. Basic speed of thecentral crank is 1500 c.r.p.m.

• Kracík, V., Tuma, L., Beran, J.: Model of Yarn Unwinding From The Spool, Czech-GermanMathematical Seminary, Liberec, Česká Republika, 2000.In this article the opening study of the unwinding of yarns from packages is presented. Mathematical model describes the wholeprocess starting with zero initial velocity of the yarn up to stationary motion of the yarn. The net’s method is used formathematical formulation of investigated problem. The yarn is represented by a chain made up of points with concentrated massand the Lagrange´s equations of motion are derived. Mathematical model is used for creation of the computer program andenables computer simulation.

• Beran, J.: Analysis and Optimization of Winding and Unwinding Processis of Yarn , annual report,TUL, Liberec, Česká Republika, 2000.

• Mrázek, J.: Decrease of Frame Vibration of Weaving Machines, annual report, TUL, Liberec, ČeskáRepublika, 2000.

• Bílek, M., Mrázek, J., Konečný, M.: Stifness Computation of the Weaving Machine Heald ShaftRod - Part. I, research report, TUL, Liberec, Česká Republika, 2000.

• Bílek, M., Mrázek, J.: Stifness Computation of the Weaving Machine Heald Shaft Rod - Part II.,research report, TUL, Liberec, Česká Republika, 2000.

• Beran, J.: Thread Tension Measuring on the Doubling Frame A2-Elitex, research report, TUL,Liberec, Česká Republika, 2000.

• Beran, J.: Stress Analysis of the Squeeze Roller, research report, TUL, Liberec, Česká Republika,2000.

• Beran, J.: Displacement Analysis of the Tool Plate, research report, TUL, Liberec, Česká Republika,2000.

• Beran, J.: Mathematical Model of the Balooning Yarn for VUB Spinning System, research report,TUL, Liberec, Česká Republika, 2000.

• Mrázek, J., Beran, J.: Equipment for Sampling of Granulates from Running Conveyor PD N20,research report, TUL, Liberec, Česká Republika, 2000.

• Mrázek, J., Beran, J.: Sampling Station of Industrial Granulates PD N30a, research report, TUL,Liberec, Česká Republika, 2000.

• Beran, J.: Acceleration Measurement on the Loading Mechanism of the PACKER 1 Machine,research report, TUL, Liberec, Česká Republika, 2000.

• Mrázek, J., Beran, J.: Development, Production and Montage Sampling Equipment for FinalProduction Testing Under Magazine of PD 84b, research report, TUL, Liberec, Česká Republika,2000.

• Kaniok, J.: Optimization of the Underthread Winding for Sewing Machine, research report, TUL,Liberec, Česká Republika, 2000.

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KVS - Department of Manufacturing systems

Head: Assoc. Prof. Josef CERHA, M.Sc., Ph.D.Telephone: +42 - 48 – 5353360E-Mail: josef.cerha@vslib.cz

Secretariat: Telephone: +42 - 48 – 5353364E-Mail: hana.vyvleckova@vslib.czFax: +42 - 48 – 5105882

Analysis of information and material flow in production plant (modelling- simulation).Development and design of special purpose production and assembly machines, automation, hydraulicmechanisms, positional servomechanisms, robot grippers, CNC programming.Research and application of new technology (Rapid prototyping, Water beam cutting).Tree dimensional measuring on CMM.Consultancy in Information systems for production planning and control.Courses in: Production rationalisation, MTM methods, CMM measurement, CNC programming

• Manlig, F.: The present situation and trends in the field of CAx technology, WEB Journal"Počítačom podporované systémy v strojárstve", , Žilinská univerzita, Žilina, SR, 2000, ISSN 1335-3926.This article deals the present situation and developmental trends in particular fields of the CAx technology. An objective of thearticle is to give an integrated image about possibilities of utilisation of Computer technology both at fore-production and alsoproduction and past-production phases of a plant. The article is thematically divided into domains CAD/CAM, informationsystems for a production control, logistics, CAQ and a human role in the plant’s process. Special attention is dedicated also toan utilisation of Computer simulation in these domains.

• Manlig, F.: Simulation of manufacturing processes, MM Průmyslové spektrum, 4, č. 10, VogelPublishing s.r.o., Praha, ČR, 2000, (pp 30-33), ISSN 1212-2572.This article deals with discreet computer simulation and of its importance for factory use. Its objective is advert to effectivenessoperation modern simulation systems and on a concrete example present of wide range using for complex and dynamic problemsolving in design an planning manufacturing systems.

• Skalla, J.: Electric servodrives, Technik , roč.8 9/2000, Vydavatelství Economia, Praha, 2000, (pp 14-15), ISSN 1210-616X.Short survey of history and present development of the electrical servodrives.

• Manlig, F., Štverák, J.: Analysis and design of JIT assembly, Peguform a.s., Liberec, ČR, 2000.• Pokorný, P.: Observations on Cutting of Materials for Rapid Prototyping, IV. Výroční

Modelárenská konference , Liberec , requested report, 2000.The presentation includes the conditions for High Speed Cutting for manmade materials and their specific cutting force.

• Manlig, F.: Simulation of JIT assembly, 3. Setkání uživatelů programu Witness, Praha, ČR, requestedreport, 2000.Presentation of simulation model of JIT assembly.

• Manlig, F.: Simulation model of flexible manufacturing system, Liberec, ČR, requested report, 2000.Presentation of simulation model of flexible manufacturing system with its optimization.

• Lachman, M., Skalla, J.: Course of acceleration of the feed drive of NC machine tool and itsinfluence on the machine frame vibration., Aplikovaná mechanika 2000, TU Liberec, 2000, ISBN80-7083-388-2.High-speed cutting leads to high speed and acceleration of machine tool servodrives. The papers deal with the effect ofacceleration course on the machine frame vibration.

• Skalla, J.: Dynamic Error of the Linear Electrical Feed Drive of NC Machine Tools, Mezinárodníkonference Inženýrská mechanika, Svratka 2000, Ústav teoretické a aplikované mechaniky AVČR,Praha, 2000, ISBN 80-86216-03-5.Paper deals with the dynamical error of linear interpolation of positional servomechanism with linear electrical motor. Examplesof influence of the velocity and acceleration feedforward on error at very high speed and acceleration are presented. The resultswere generated from computer simulation in Matlab/Simulink.

• Skalla, J.: Dynamic errors of feed drives of NC machine tools and its compensation., Mezinárodníkongres MATAR 2000 - Výrobní stroje, automatizace a robotizace ve strojírenství, Společnost proobráběcí stroje a ČVUT Praha, 2000, ISBN 80-238-5541-7.Simultaneous movement of the axis of NC machine at high speed and acceleration results in considerable dynamic contouringerrors. The contouring errors are associated with servomechanism dynamics and may achieve values up to several tenth ofmillimetre. Paper deals with possibilities of compensation of these errors. Results were generated from the Computer simulation.

• Lachman, M., Skalla, J.: Acceleration control of the drive and its influence on the machine framevibration., Celostátní konference EPVE 2000 - Elektrické pohony a výkonová elektronika., Ústav el.pohonů a výkonové elektroniky VUT Brno, 2000, ISBN 80-214-1727-7.High-speed cutting leads to high speed and acceleration of machine tool servodrives. The papers deal with the effect ofacceleration course on the machine frame vibration.

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• Folprecht, R., Skalla, J.: Passive forces in the model of machine tool feed drive., Aplikovanámechanika 2000, TU Liberec, 2000, ISBN 80-7083-388-2.The standard frictional function in Matlab-Simulink software is very elementary (function signum) and for many models is notsatisfactory. The work deals with another models of frictional function and compare their properties.

• Hruška, J., Jurásek, D., Skalla. J.: Dynamic pattern error at linear interpolation of NC machinetools, Aplikovaná mechanika 2000, TU Liberec, 2000, ISBN 80-7083-388-2.High speed and acceleration of modern servodrives of NC machine tools results in pattern errors at interpolation. Paper dealswith this pattern errors at linear interpolation and methods of its compensation.

• Manlig, F.: Manufacturing systems, TU v Liberci, KVS, 2000.Teaching texts for students of 4th year of study.

• Pokorný, P.: Cutting of Materials for Rapid Prototyping, research report, TU v Liberci, KVS, 2000.The report refers research on materials for Rapid Prototyping. It includes the conditions for High Speed Cutting of manmadematerials and measurement of theirs´ specific cutting force.

• Cerha, J.: Model of pressure valve in MATLAB -SIMULINK software research report, TU vLiberci, KVS, 2000.There is described by mathematical means a type of one-stage pressure valve and developed model in MATLAB - SIMULINKsoftware. In the report there are shown a dynamic characteristics, that show the model performance. The model will be used forfollowing research of pressure valves and for teaching.

• Manlig, F., Urban, P.: Aspects of the computer simulating, research report, TU v Liberci, KVS, 2000.Objective of this project is a research in area of discrete simulation and its use for effective operation of manufacturing systems.The research can be devided into two sections: 1) Making application simulation models. 2) Research in evaluation of simulationexperiments.

• Keller, P.: Non-contact measurement for discrete engineering components by camera, researchreport, TU v Liberci, KVS, 2000.This project reviews methods of non-contact dimensional measurement for discrete engineering components by digital camera.Aim of this project is development of machine for 2D measurement and also description of methods for 3D measurement.

• Zeleny, P.: Review of available drive systems for 3D plotting, research report, TU v Liberci, KVS,2000.This report is focused on linear drive systems which are available for Rapid Prototyping methods based on 3D plotting.

• Karásek, J.: Review of Rapid Prototyping Methods, research report, TU v Liberci, KVS, 2000.This review contains RP systems, that are commercialised and used in production.

• Skalla, J.: Dynamic Error of the Feed Drive of NC Machine Tools, research report, TU Liberec,KVS, 2000.Report deals with the dynamical error of interpolation of positional servomechanism. Examples of influence of the velocity andacceleration feedforward on error at very high speed and acceleration are presented. The results were generated from computersimulation in Matlab/Simulink.