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1、FailureModesandEffectsAnalysis(FMEA)潛在失效模式及影響分析Introduction介紹AprocesspotentialFMEAisananalyticaltechniqueutilizedbyamanufacturingresponsibleengineer/teamasameanstoassurethat,totheextentpossible,potentialfailuremodesandtheirassociatedcauses/mechanismshavebeenconside
2、redandtheengineer’s/team’sthoughts(includingananalysisofitemsthatcouldgowrongbasedonexperienceandpastconcerns)asaprocessisdeveloped.Thissystematicapproachparallelsandformalizesthementaldisciplinethatanengineernormallygoesthroughinanymanufacturingplanningprocess.過程的
3、FMEA是負(fù)責(zé)制造生產(chǎn)的工程師/隊伍使用的分析技法，用來在一定程度上確保潛在的失效模式和相關(guān)的原因/機(jī)制都已考慮到，以及工程師/隊伍的想法（包括基于經(jīng)驗和過去的想法得出的可能失效項目分析）。這種系統(tǒng)性的方法將工程師在任何生產(chǎn)計劃過程中通常會碰到的問題標(biāo)準(zhǔn)化了。2TheProcesspotentialFMEAIdentifiespotentialproductrelatedprocessfailuremodes.確認(rèn)與產(chǎn)品有關(guān)的過程失效模式Assessesthepotentialcustomereffectsofthefail
4、ures.評估失效對客戶潛在的影響Identifiesthepotentialmanufacturingofassemblyprocesscausesandidentifiesprocessvariablesonwhichtofocuscontrolsforoccurrencereductionordetectionofthefailureconditions.確定潛在的制造原因和過程變數(shù)，以便加以控制，減少發(fā)生可能性，增加發(fā)現(xiàn)到的可能性Developsarankedlistofpotentialfailuremodes,t
5、husestablishingaprioritysystemforcorrectiveactionconsiderations.列出潛在失效模式的排行表，建立一個優(yōu)先系統(tǒng)以做出改善行動Modifymanufacturingorassemblyprocess.改變生產(chǎn)或生產(chǎn)線過程3FMEAStep步驟:1.DefinethescopefortheFMEA定義FMEA的范圍2.Identifyteammembers,customer,andknowledgeexperts確認(rèn)隊伍成員、客戶，和專家3.Developrolesan
6、dresponsibilitiesforteammembers制定每個成員的任務(wù)和職責(zé)4.Studytheproduct/process/service研究產(chǎn)品/制程/服務(wù)5.Brainstormfailuremodes,knownandpotential集體討論已知的和潛在的失效模式6.Listtheeffects,causes,andcurrentcontrolsforeachfailuremode列出影響、原因和失效模式當(dāng)前控制情況7.AssignratingsforSeverity,Occurrence,andDet
7、ection給嚴(yán)重性、發(fā)生率、發(fā)現(xiàn)度的評分8.CalculateRPN計算RPN9.DecideonathresholdRPN制定采取行動的RPN界限值10.PrioritizebasedonRPNandseverity,orasrequiredbythecustomer優(yōu)先性要根據(jù)RPN，嚴(yán)重性，或客戶的要求11.Identifycorrectiveactions確認(rèn)改善行動12.Implementandverifyeffectivenessofcorrectiveaction執(zhí)行并確認(rèn)改善行動的有效性13.Complet
8、ethedocumentation完成文件記錄4DefinethescopefortheFMEA定義FMEA的范圍Definetheboundarieswithinwhichtheproduct,process,orservicewillbestudied,identifyingtheop
