FMEA失效模式及其影响分析(2).ppt

FailureModeandEffectAnalysis失效模式及其影响分析ModuleObjectives课程目的FMEA:FailureModesandEffectsAnalysisFMEAisasystematicapproachusedtoexaminepotentialfailuresandpreventtheiroccurrence.Itenhancesourabilitytopredictproblemsandprovidesasystemofrankingorprioritizationsothemostlikelyfailuremodescanbeaddressed.FMEA是用来检查潜在失效和预防它再次发生的系统性方法.它增强了我们预测问题的能力并提供了一个排序或区分优先次序的系统因而使得最可能的失效模式得以确定.FMEAisgenerallyappliedduringtheinitialstagesofaprocessorproductdesign.Brainstormingisusedtodeterminepotentialfailuremodestheircausestheirseverityandtheirlikelihoodofoccurring.InSixSigmaweapplyFMEAtoknowfailuremodes.Ourmaininterestsarethecauseandlikelihoodofoccurrenceforwhichwehaveactualdataanddonotneedtorelyonbrainstorming.FMEA通常应用在工艺及产品设计的初期自由讨论决定潜在失效的模式、原因、严重度及发生的可能性。在6S中我们应用FMEA去了解失效的模式。我们主要感兴趣的是原因及发生的可能性。FMEAisalsoavaluabletoolformanagingtasksduringdefect/failurereductionprojects.FMEA也是一个在失效缩小的管理任务的有价值的工具。DefinitionofFMEA定义Failuretoperformadefinedfunction执行既定功能的失效Somethingoccurringthatyoudon‘texpectorwant发生了你不希望或不想要的事情Wrongapplication应用错误FMEAUsebyBlack/Brown/GreenBeltsBackgroundTypesofFMEA’sWhenistheFMEAStarted?WhentoStart???BeginningandEndEffectofFMEAonProcessandDesignchangesProcessFMEAFormJLExampleElementsofFMEAProcessFailureModeProcessCausesCurrentControlsTypesofMeasuresRiskPriorityNumberShortcomingsofRPNSeverityOccuranceDetectionItisconductedonatimelybasisandItisappliedbyaproductteamandItsresultsaredocumentedWhatIsAGoodApplication?FMEAProcessBasicSteps1.DevelopaStrategy2.Reviewthedesign/processBasicSteps1.DevelopaStrategy2.Reviewthedesign/process3.Listfunctions4.Brainstormpotentialfailuremodes1.DevelopaStrategy2.Reviewthedesign/process3.Listfunctions4.Brainstormpotentialfailuremodes5.Organizepotentialfailuremodes1.DevelopaStrategy2.Revie