design constraints written report format. product design constraints and requirements design...
TRANSCRIPT
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Design Constraints
Written Report Format
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Product Design Constraints and Requirements
Design Engineers must consider a multitude of technical, economic, social, environmental, and political constraints when they design products and processes.
There must be clear evidence in your design project that you have addressed the constraints that are relevant to your project.
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Effect of Constraints
Better Designs
Design Changes
Design Changes
Constraint Limits
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Functional Constraints• Overall Geometry – size, width, space, arrangement• Motion of parts – type, direction, velocities, acceleration,
kinematics• Forces involved – load direction, magnitude, load, impact• Energy needed – heating, cooling, conversion, pressure• Materials to be used – flow, transport, properties• Control system – electrical, hydraulic, mechanical, pneumatic• Information flow – inputs, outputs, form, display
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Safety Constraints
• Operational – direct, indirect, hazard elimination• Human – warnings, training• Environmental – land, sea, air, noise, light, radiation,
reaction, transport
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Quality Constraints
• Quality assurance – regulations, standards, codes• Quality control – inspection, testing, labeling• Reliability – design life, failures, statistics
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Manufacturing Constraints
• Production of components – factory limitations, means of production, wastes
• Purchase of components – supplier quality, reliability, quality control, inspection
• Assembly – installation, foundations, bolting, welding• Transport – material handling, clearance, packaging
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Timing Constraints• Design schedule – project planning, project control• Development schedule – design detailing, compliance tests• Production schedule – manufacture, assembly, packing,
transport• Delivery schedule – delivery date, distribution network,
supply chains
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Economic Constraints• Marketing analysis – size of market, distribution, market segments• Design costs – design team computing, information retrieval• Development costs – design detailing, supplier costs, testing costs• Manufacturing cost - tooling, labor, overhead, assembly, inspection• Distribution costs - packing, transport, service centers, spare parts,
warranty• Resources – time, budget, labor, capital, machines, material
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Ergonomic Constraints• User needs – type of operation, instructions, warnings• Ergonomic design – man-machine relationships,
operation, height, layout, comfort, lighting• Cybernetic design – controls, layout, clarity, interactions
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Ecological Constraints• General environmental impact – impact on natural
resources, social resources• Sustainability – political and commercial consequences,
implications for following generations• Material selection –solid, liquid, gas, stability, protection,
toxicity• Working fluid selection – fluid, gas, flammability, toxicity
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Aesthetic Constraints• Customer appeal – shape, color, texture, form, feel, smell,
surprise and delight features• Fashion – culture, history, trends• Future expectations – rate of change in technology,
trends, product families
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Life-Cycle Constraints• Distribution – means of transport, nature and conditions of
dispatch, rules, regulations• Operation – quietness, wear, special uses, working
environments• Maintenance – servicing intervals, inspection, exchange and
repair, cleaning, diagnostics• Disposal – recycle, scrap
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Legal/Ethical Constraints• Regulations – OSHA, FAA, FDA• Ethics – public safety, health, welfare and integrity• Intellectual Property – patents, trademarks, copyrights
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Project Reports
• MidTerm report
• Oral report
• Final Report
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MidTerm Report
• Should describe MidSemester progress
• Think of it as a start on your final report
• Introductory and background material and project description material will remain the same
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Technical Communication Format(MAE 451)
• “Double Five”
• Include technical discussion
• Include business topics as appropriate
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Report Format
• Summary
• The Problem
• Scope and Goals
• Solution
• Results
• Conclusions
• References
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Summary
• Summarize the project and your work
• Don’t summarize the report
• Briefly introduce the problem
• Summarize the solution and conclusions
• Typically half a page in length
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The Problem (Introduction)
• Introduce the design problem here
• Background information on the company or research/laboratory area
• What is the project?
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The Problem (Introduction)• Introduce the design problem here
• Background information on the company or research/laboratory area
• What is the project?
• Why is it of interest?
• What are constraints or requirements that the solution must satisfy
• Briefly highlight the contents of the report
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Scope and Goals
• Very specific description of your design project and expectations
• What specifically was to be accomplished?
• Are you part of a team?
• Are you continuing a project?
• What is needed to finish the project?
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Solution
• Select Titles and Subtitles for your project
• This is the place to describe the details of your work process and issues encountered
• Discuss constraints and your management of them - a special subsection would be best
• Include figures, graphs and photos
• Large amounts of information should be in an appendix at the end of the report
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Results
• Describe the results of your work including your resulting design
• Include figures, drawings etc. as appropriate
• Comment on the quality of your technical results and design
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Conclusions
• Have you achieved the goals of your design?
• Is the problem completely solved?
• Is there continuation after the semester ends?
• Will the project have to be continued by another group?
• If more work is needed, describe it carefully and suggest a completion schedule.
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References
• References make your work credible
• Back up all of your facts with references
• Indicate references for any previous work on your design project
• Indicate references for similar projects by others
• Use references for any technical approaches used in your solution
• State your references completely
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Report Format
• Summary
• The Problem
• Scope and Goals
• Solution
• Results
• Conclusions
• References
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Comments on Figures
• Figures are best inserted directly in the text
• Insert figures right after they are discussed
• Clearly number each figure and be sure to discuss the figure by number
• As an alternate - place all the figures together at the end of the report
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Just to Summarize
• Think about CONSTRAINTS and report on their effect on your design
• Make your report professional
• Think of the MidTerm report as a start on your final report
• Make use of the suggested report format