using triz for systematic reliability engineering - erik veninga v2i · 2018-11-30 · triz, the...
TRANSCRIPT
Using TRIZ for SystematicReliability Engineering
Erik Veninga – V2i (Vors to Innovate)
Contents• IntroductionV2i• TRIZ,theTheoryofInventiveProblemSolving
• BasicsoftheConcept• IFR(IdealFinalResult)• WhyTechnicalContradiction?• GeneralTRIZProblemsolvingModel
• ProjectingReliabilityonTRIZmodel• WhybringingtogetherTRIZandReliability?• UsingTRIZintheReliabilityDesignProcess• Example:ElectromigrationFailureMechanism• TheIFR(IdealFinalResult)• Furtherreading(anddoing)
• Summarising
V2i (Vors to Innovate)• Innovation,Reliability&Improvement
ManagementConsulting
AppliedResearch
DomainKnowledge
SystematicInnovation- TRIZ:MakingInnovationtangibleandpredictable- NPIOptimisation:AcceleratingTTM(TimetoMarket)
ProductReliability- DfR:Transitiontobuilt-inreliability- RCA:Solvinglonglasting/complicatedfailures- DesigningAcceleratedLifetimeTestsand
reliabilityprograms
ProcessImprovement- Processcapabilitystudies- Yieldimprovement- Productandprocessaudits
TRIZ, the Theory of Inventive Problem Solving
• Aproblem-solving,analysisandforecastingmethodologyderivedfrompatternsofinventioninpatents
• DevelopedbyGenrichAltshuller (1926-1998)whostartedwithTRIZin1946
Therearestillonly40Inventiveprinciplesavailabletosolvetechnicalproblems!
Alltechnologyevolutiontrendsarepredictable!
TRIZ, the Theory of Inventive Problem Solving
• Technicalsystemsevolveinadirectionthatincreasesideality• ProgresstotheIFR(IdealFinalResult)
Ideality“Value”=∑(Perceived)Benefits(∑Cost+∑Harm)
“Self…..……”
TRIZ, the Theory of Inventive Problem Solving
• “Whytechnicalcontradiction?”Almostalltechnicalproblems(atanylevelofasystem)canbereducedtocontradictions,contradictingcharacteristicsthatalsotendtoblockinnovations
“Themosteffective solutions/innovations(andreliabilityimprovements)canbeachievedwhentechnicalcontradictionsaresolved”
CommonengineeringpracticeImprovingparametersatthecostofother
parameters
OptimizationbyDOE(DesignofExperiments)Improvingmultipleparametersandinteractions
(stillatthecostofotherparameters)
TRIZNewlevelofimprovementandinnovationby
solvingcontradictions
TRIZ, the Theory of Inventive Problem Solving
• TRIZtooltosolvecontradictions:ContradictionAnalysis• 39(+)TRIZparameters• 40Inventiveprinciples
Contradictionmatrix:
TRIZ, the Theory of Inventive Problem Solving
• GeneralmodelfortheTRIZproblemsolvingprocess
SpecificProblem
TRIZGenericProblem
TRIZGenericSolutions
SpecificSolution
Traditional:TrialandErrorapproach
40InventivePrinciplesTrendsofEvolution76StandardSolutions, …….
Projecting Reliability on TRIZ modelCommonpractice
SpecificProblem
TRIZGenericProblem
TRIZGenericSolutions
SpecificSolution
Traditional:TrialandErrorapproach
40InventivePrinciplesTrendsofEvolution76StandardSolutions, …….
GenericProblem:Failuremechanism
SpecificProblem:Failuremode
GenericSolutions:e.g.DesignRules
SpecificSolution
Iterative”Design-Build-Test-Fix”Process
PhysicalModels
Why bringing together TRIZ and Reliability?
Becausethechallengeisstill:DesignforReliability(DfR)
However,aniterative,moretimeconsumingandcostly”Design-Build-Test-Fix”processiscommonpractice!
PhysicsofFailure(PoF)basedapproachesholdthekeytounderstandingandsystematicallyimprovingreliability,includingreducingtheTTM(TimetoMarket)!
"DesignforReliability(DfR)isaprocessforensuringthereliabilityofaproductorsystemduringthedesignstagebefore
physicalprototype."[DfR Solutions]
Using TRIZ in the Reliability Design Process
1) ConductaFMEA(orencountertest/fieldfailures)2) Identify(potential)failuremode3) Determineunderlyingfailuremechanism(expansiontoFMMEA)4) Inventoryinfluencingfactors(literature,availablemodels,……)5) ConvertfactorsintoTRIZparameters(problemdefinitioningeneric
andcontradictingparameters)6) ConductTRIZContradictionAnalysis(teameffort)
ConductFM(M)EA
StudyFailureMechanism(s)
Definecontradictions
Generatesolution(s)
Example: Electromigration Failure Mechanism
• Failuremode:e.g.Shortcircuit• Failuremechanism:Electromigration• Influencingfactors:currentdensity,potentialdifference,spacingbetweenanodeandcathode,interconnect/conductorsize,temperature,………..,………InventoryrelevantTRIZparameters*4.Lengthofstationaryobject10.Force13.Stabilityoftheobject'scomposition15.Durationofactionbyamovingobject17.Temperature19.Useofenergybymovingobject21.Power23.Lossofsubstance26.Quantityofsubstance/thematter27.Reliability30.Externalharmaffects theobject,……….
Inventiveprinciples**1.Segmentation12.Equipotentiality28.Mechanics substitution30.Flexible shellsandthinfilm
SelectionofcontradictingparemetersWorseningfeature:23.Losofsubstance
Improvingfeature:21.Power(or10.Force)
*Requiresexercise,useprofessionalliteraturewithexamplesandexplanations
Andtheninventiveness,technicalskillsandcreativityareneededtogetfromtheabstractinventiveprinciplestospecificsolutions!
The IFR (Ideal Final Result)• WhatabouttheevolutionofproductsandReliabilityEngineering?
• Selftesting• Selfdiagnosing• Selfrepairing/selfhealingmaterials• …..• ….
Selfdesigningforreliability?
Further reading (and doing)• Twoessentials
Greatproblemsolvingexamplesgivenbytheinventor.
ExcellentHandBooktoreallygetstartedandgenerateresults.
Summarising• PhysicsofFailure(PoF)basedapproachesholdthekeytounderstandingandsystematicallyimprovingreliability
• UsingtheTRIZmodelatearlydesignstagesforcestothinkandworkonfundamentalfailurebehaviourandcontrollingmechanismsinsteadoffightingfailuremodesattheendofthedesignprocess
• Reliabilityimprovementmeanschanging(sub)systems,justfindandsolvetheunderlyingcontradictions!
Thank you for your Attention
Contact
ErikVeninga|V2i- Vors toInnovateHoogeind IndustrialEstateZuiddijk 9,5705CSHelmond
TheNetherlandsE-mail:[email protected]:+31(0)651531740