PHILIPS-FMEA

1.1PhilipsFMEAFailureModeandEffectAnalysisIntroductionProduct-FMEABlockdiagram,functiontreeProcess-FMEAProcess-flowdiagram(macro-level),micro-levelFacilitatorskills–IntroductionWhyFMEA’s?Definition,Purpose,Types,BenefitsTeamApproachIntroduction’s?Appropriaterecommendedactionsmaynothavebeentaken.Savingsinengineeringtime.Reductionofchangesimmediatelybeforeproductionstart(CommercialRelease).–DefinitionIdentifypotentialfailuremodesPrioritizeactionsDocumenttheprocess.Structuredgroupofactivitieswhich...–PurposeFailuresTimeCR(Productionstart)FMEARateseverityoffailuremodesIdentifyactionstoreduceoccurenceTestadequacyofcontrolsFMEA–PurposeFMEA’sareintendedto...–TypesOpticalProduct-FMEAMechanicalProcess-FMEAElectricalMechanicalElectricalOptical(ftboL2)FMEAonL0Board(ftboL1)FMEAonL0Schematics(ftboL0)FMEAonArchitecturesFMEAonchosenArchitecture–Product-FMEA’sAssessfailuremodeeffectsonallcustomers.AidsinevaluatingtestspecificationsEvaluationofdesignrelatingtoDFMDFADFTIncreasesthepossibilitytodetectpossiblefailuremodes.ProcesProduct–Proces-FMEA’sAssesseffectsonallcustomersIdentifiespotentialmanufacturingandassemblycausestofocuscontrolsonreducingoccurrenceorincreasingdetection.DesignProces’sFMEAsWhoinitiates?FailureModeandEffectAnalysisWhoupdates?WhoisFMEA-customer?Startingdate/revisiondate?Whencompleted?Howdocu-mented?Whentodiscard?Whoprepares?’sModificationtoaproductorprocessisplannedComponentistobeusedinnewenvironmentCustomerrejectionsFMEA’sarelivingdocumentsandareupdated...–TeamApproachCore-teamSupport-team–ContentDefineFMEA-teamDefinescopeDescribefunctions»Brainstorming»FunctionTreesProduct-FMEAContent–TeamDesign-EnginieerProduction/process-enginieerCore-teamRepresentitivesfrom:•development•production•quality•purchase•testdept.•...SupportteamFacilitator–ScopeCreateBlockdiagramIdentifythebounderyforAnalysisConfirmcompositionofsupportteam.Oncecoreteamisestablished...精品资料网1.19Exampleblockdiagram(SettopWildfire)FrontKlickedDisplayPCBPSUSmartcardPCBFrameCoverKlickedKlickedScrewedScrewedDescribestheintentofthedesignMustbemeasurebleorsetatanactionablelevelRepresentsallwants,bothspokenandunspoken.Whatarethefunctionsofthedesign?精品资料网1.22DescribeFunctionsThoughtstarters...SatisfyuserAttractuserGuaranteedurabilityEasytorepareSafetyrequirementsProvidesanorganizedapproachtoidentifytheessentialfeaturesofaproductDefinesallspokenandunspokenrequirementsProvidestheteamwithaclearoverviewofallthefunctionsoftheproduct.精品资料网1.26DisplayInformationFunctiontree–Frontbutton(Settop)HOW?Mustbeprintableandresistancetewear.PQR-Cleantest.Tekstclearlyvisibleafterx-timescleaning.WHY?Brainstormallfunctions(VERB-NOUN)Documentindividualfunctionsbyasking“Howisthisfunctionachieved?”Repeatlefttoright,untilactionablelevelWorkrighttoleftandcheckstructurebyasking“Whyisthisfunctionincluded?”–FunctionsDescriptionLevel1DescriptionLevel2FunctionModeofFailureEffectCauseAction/SolutionResp.FrontButtonTekstclearvisibleafterPQR-testMCMLP:Tekstclearvisibleafter100xcleaning.FailureModeTypeExample–ModesoffailureDescriptionLevel1DescriptionLevel2FunctionModeofFailureEffectCauseAction/SolutionResp.FrontButtonTekstclearvisibleafterPQR-testTekstunread-ableMCMLP精品资料网1.33Product-FMEA–TabelofeffectsFailureModeTekstunread-ableFrontbuttonCompleteAssemblyDifficulttosaleCustomerDissatisfiedEnduserDissatisfiedGovernmentalregulationNoneAnotherpartNone–EffectsoffailureDescriptionLevel1Description