PhilipsFMEAEnglish

1.1PhilipsFMEAFailureModeandEffectAnalysis1.2ContentofthecourseIntroductionProduct-FMEABlockdiagram,functiontreeProcess-FMEAProcess-flowdiagram(macro-level),micro-levelFacilitatorskills1.3FMEA–IntroductionWhyFMEA’s?Definition,Purpose,Types,BenefitsTeamApproachIntroduction1.4WhyFMEA’s?Appropriaterecommendedactionsmaynothavebeentaken.Savingsinengineeringtime.Reductionofchangesimmediatelybeforeproductionstart(CommercialRelease).1.5FMEA–DefinitionIdentifypotentialfailuremodesPrioritizeactionsDocumenttheprocess.Structuredgroupofactivitieswhich...1.6FMEA–PurposeFailuresTimeCR(Productionstart)FMEA1.7RateseverityoffailuremodesIdentifyactionstoreduceoccurenceTestadequacyofcontrolsFMEA–PurposeFMEA’sareintendedto...1.8FMEA–TypesOpticalProduct-FMEAMechanicalProcess-FMEAElectricalMechanicalElectricalOptical1.9FMEASessionsFMEAonEVTModelFMEAonFirstMechanicalWorkingModelFMEAonPartFilesFMEAonL1Board(ftboL2)FMEAonL0Board(ftboL1)FMEAonL0Schematics(ftboL0)FMEAonArchitecturesFMEAonchosenArchitecture1.10Benefits–Product-FMEA’sAssessfailuremodeeffectsonallcustomers.AidsinevaluatingtestspecificationsEvaluationofdesignrelatingtoDFMDFADFTIncreasesthepossibilitytodetectpossiblefailuremodes.ProcesProduct1.11Voordelen–Proces-FMEA’sAssesseffectsonallcustomersIdentifiespotentialmanufacturingandassemblycausestofocuscontrolsonreducingoccurrenceorincreasingdetection.DesignProces1.12GeneratingFMEA’sFMEAsWhoinitiates?FailureModeandEffectAnalysisWhoupdates?WhoisFMEA-customer?Startingdate/revisiondate?Whencompleted?Howdocu-mented?Whentodiscard?Whoprepares?1.13ManagingFMEA’sModificationtoaproductorprocessisplannedComponentistobeusedinnewenvironmentCustomerrejectionsFMEA’sarelivingdocumentsandareupdated...1.14FMEA–TeamApproachCore-teamSupport-team1.15Product-FMEA–ContentDefineFMEA-teamDefinescopeDescribefunctions»Brainstorming»FunctionTreesProduct-FMEAContent1.16Product-FMEA–TeamDesign-EnginieerProduction/process-enginieerCore-teamRepresentitivesfrom:•development•production•quality•purchase•testdept.•...SupportteamFacilitator1.17Product-FMEA–ScopeCreateBlockdiagramIdentifythebounderyforAnalysisConfirmcompositionofsupportteam.Oncecoreteamisestablished...1.18BlockdiagramComponent/AssemblyPartXPartYPartZServiceOthersystemsAssemblyUserScrewWeldAdhesive1.19Exampleblockdiagram(SettopWildfire)FrontKlickedDisplayPCBPSUSmartcardPCBFrameCoverKlickedKlickedScrewedScrewed1.20DetermineFunctionsDescribestheintentofthedesignMustbemeasurebleorsetatanactionablelevelRepresentsallwants,bothspokenandunspoken.Whatarethefunctionsofthedesign?1.21VerbIndicatesaction,occurrence,beingGenerateControlDisplayNounIndicateswhattheactionrelatestoDescribeFunctionlightspeedinformation1.22DescribeFunctionsThoughtstarters...SatisfyuserAttractuserGuaranteedurabilityEasytorepareSafetyrequirements1.23Brainstorming1.24FunctiontreeProvidesanorganizedapproachtoidentifytheessentialfeaturesofaproductDefinesallspokenandunspokenrequirementsProvidestheteamwithaclearoverviewofallthefunctionsoftheproduct.1.25FirstlevelSecondLevelConstructingFunctiontreesThirdLevelHOW?WHY?1.26DisplayInformationFunctiontree–Frontbutton(Settop)HOW?Mustbeprintableandresistancetewear.PQR-Cleantest.Tekstclearlyvisibleafterx-timescleaning.WHY?1.27GuidelinesBrainstormallfunctions(VERB-NOUN)Documentindividualfunctionsbyasking“Howisthisfunctionachieved?”Repeatlefttoright,untilactionablelevelWorkrighttoleftandcheckstructurebyasking“Whyisthisfunctionincluded?”1.28Product-FMEA–FunctionsDescriptionLevel1DescriptionLevel2FunctionModeofFailureEffectCauseAction/SolutionResp.FrontButtonTekstclearvisibleafterPQR-testMCMLP1.29PotentialfailureModesNofunctionPartialfunctionFailureModeTypeExampleNotoperationalNotalloffunctionoperating1.30FailureModes:FrontbuttonNofunctionNotekstavailablePartialfunctionTekstpartialavailableFunction:Tekstclearvisibleafter100xcleaning.FailureModeTypeExample1.31Product-FMEA–ModesoffailureDescriptionLevel1DescriptionLevel2FunctionModeofFailureEffectCauseAction/SolutionResp.FrontButtonTekstclearvisibleafterPQR-testTekstunread-ableMCMLP1.32EffectsfailureWhataretheeffectsofthefailurerelatingto:-anotherpart-thecompleteassembly-thecustomer-theenduser-thegovernmentalregulations1.33Product-FMEA–TabelofeffectsFailureModeTekstunread-ableFrontbuttonCompleteAssemblyDifficulttosaleCustomerDissatisfiedEnduserDissatisfiedGovernmentalregulationNoneAnotherpartNone1.34Product-FMEA–EffectsoffailureDescriptionLevel1DescriptionLevel2FunctionModeofFailureEffectCauseAction/SolutionResp.FrontButtonTekstclearvisibleafterPQR-testTekstunread-ableMCMLPAssemblynotpossibletosaleCustomerdissatisfied1.35Severity(Weightfactor)Whatistheseverityoftheeffects?1.36Criteria:SeverityofeffectClassEffectAcceptedfailureDNoneSafetyfailureSUnacceptableriskNon-conformingwithsafetyCorrectionisnescessaryARelativebigriskCorrectieisrecommendedBrisicoCorrectieisnuttigCRatingcriteriavoorSeverity(Weightfactor)MinimumriskCorrectieisusefullC1.37Frontbutton/TekstreadableafterPQR-testFailureModeTekstunreadableEff