DFMEA失效模式與后果

DFMEA------失效模式與后果分析

(DesignFailureMode&EffectAnalysis)Marian(Shenzhen)Co.,Ltd編制：曹喜元FormationBy：JackCao

日期：

Date：1-Feb-2013主要內(nèi)容

Maincontent1.DFMEA介紹4.DFMEA關(guān)鍵參數(shù)DFMEAPresentationDFMEAKeyParameter2.DFMEA職責(zé)5.DFMEA表單填寫說明DFMEAResponsibilityDFMEAFormFillingExplanation3.DFMEA制作流程6.DFMEA案例DFMEAMakeProcessDFMEAExample一、DFMEA的介紹

DFMEAPresentationDFMEA是FMEA中的一種，F(xiàn)MEA分為：DFMEA和PFMEADFMEAisintheFMEAonetype,FMEAContain:DFMEA&PFMEADFMEA是由負(fù)責(zé)設(shè)計(jì)的工程師或小組，在產(chǎn)品設(shè)計(jì)階段盡可能的范圍內(nèi)預(yù)估產(chǎn)品在設(shè)計(jì)上可能發(fā)生的缺點(diǎn).DFMEAisEngineerorgrouptoresponsiblescheme,Asfaraspossiblewithinthescopeoftheestimatedproductdesignonthepossiblefaultsintheproductdesignstage.PFMEA是由負(fù)責(zé)制造裝配的工程師或小組，預(yù)估產(chǎn)品在生產(chǎn)過程階段或之前可能會發(fā)生的缺點(diǎn).PFMEAisPEorgrouptoresponsiblescheme,Asfaraspossibletheestimatedproductpossiblefaultsintheproductiveprocessorbefore.本章節(jié)重點(diǎn)講述DFMEAThischapterfocuseson

DFMEA.DFMEA的形成

DFMEAFormationDFMEA是由負(fù)責(zé)設(shè)計(jì)的工程師或小組，在盡可能的范圍內(nèi)預(yù)估產(chǎn)品在設(shè)計(jì)上可能發(fā)生的缺點(diǎn)，衡量該項(xiàng)缺點(diǎn)或可能造成的影響，并擬定為防止或檢測該缺點(diǎn)應(yīng)改善的設(shè)計(jì)控制，并推動(dòng)其標(biāo)準(zhǔn)化作業(yè)，且必須配合設(shè)計(jì)發(fā)展之程序反復(fù)執(zhí)行.DFMEAisEngineerorgrouptoresponsiblescheme,Asfaraspossiblewithinthescopeoftheestimatedproductdesignonthepossiblefaultsintheproductdesignstage,Measurethefaultsorcancauseinfluence,andplantopreventortestingthedefectshouldbeimproveddesigncontrol,andpromotethestandardizedoperation,andmustfitinwiththedevelopmentofdesignprogramandimplementation.最終成品及其所有相關(guān)的系統(tǒng)、子系統(tǒng)都應(yīng)納入評估.DFMEA是設(shè)計(jì)小組，即公司工程，運(yùn)用設(shè)計(jì)，工程經(jīng)驗(yàn)或分析方法等而形成的.Thefinalandallrelatedsystem,subsystemshouldbeincludedinassessment.DFMEAisthedesignteam,namelythecompanyproject,theuseofdesign,engineeringexperienceoranalysismethodsandform.DFMEA必備條件

DFMEAEssentialCondition

確認(rèn)已知及潛在的失效模式；Confirmtheknownandthepotentialfailuremode.

確認(rèn)每一個(gè)失效模式的效應(yīng)和原因；

Confirmeachfailuremodeeffectandreasons.

風(fēng)險(xiǎn)優(yōu)先評估（嚴(yán)重性、發(fā)生頻率、難檢度）；Riskpriorityevaluation(severity,occurrencefrequency

anddifficulttocheckdegree)

提供問題的數(shù)據(jù)及改善行動(dòng)；Provideproblemofdataandimprovementaction.

DFMEA的動(dòng)態(tài)鏈

DFMEATrendsCatenationDFMEA是個(gè)循環(huán)過程，在設(shè)計(jì)方案最終形成之時(shí)或之前開始.DFMEAisacyclicprocess,thedesignschemeoffinalformorbeforethestart.在產(chǎn)品開發(fā)各階段中，當(dāng)設(shè)計(jì)有變化或得到其他信息時(shí)，應(yīng)及時(shí)，不斷地修改，最終在產(chǎn)品加工圖樣完成之前全部結(jié)束。Ineverystageofproductdevelopment,whenthedesignchangeorgetotherinformation,shouldbeprompt,constantlymodified,finally,inproductprocessingpatternuntilallover.二、DFEMA職責(zé)

DFMEAResponsibility

工程經(jīng)理：DFMEA總體負(fù)責(zé)人，負(fù)責(zé)組建DFMEA團(tuán)體，提出DFMEA實(shí)施計(jì)劃，并組織召開DFMEA會議，分配團(tuán)隊(duì)人員任務(wù)

組織DFMEA評審，DFMEA審核.Projectmanager:generalmanager,responsibleforDFMEA,this

paperputsforwardaDFMEAgroupDFMEAimplementationplan,

andorganizeaDFMEAmeeting,distributionteampersonneltask

OrganizationDFMEAreview,DFMEAaudit.

工程師：負(fù)責(zé)主導(dǎo)DFMEA文件編寫、修改和升級.Engineer:responsibleforleadingDFMEAdocumentpreparation,

modificationandupgrade.二、DFEMA職責(zé)

DFMEAResponsibility

工程助理：負(fù)責(zé)客戶投訴問題，研發(fā)、試產(chǎn)、量產(chǎn)中問題的收集，及

時(shí)反饋到DFMEA團(tuán)體負(fù)責(zé)人處，并參與O,S,D參數(shù)評估，提供量

產(chǎn)CPK數(shù)據(jù).Projectassistant:responsibleforcustomercomplaintproblem,research

andtrialproduction,thequantityofcollection,andrenderWhenthe

feedbacktoDFMEAgroupplace,andparticipateinO,S,Dparameter

evaluation,SupplyvolumeproductionCPKdata.

試樣工程師：負(fù)責(zé)研發(fā)產(chǎn)品測試過程中所出現(xiàn)問題點(diǎn)的收集并及時(shí)

反饋到DFMEA負(fù)責(zé)人處，參與O,S,D參數(shù)評估.Sampleengineer:responsibleforresearchanddevelopmentinthe

processofproducttestingproblemspointcollectionandtimelyfeedback

totheDFMEAchiefplace,participateinO,S,Dparameterevaluation.二、DFEMA職責(zé)

DFMEAResponsibilityCQE：負(fù)責(zé)客戶需求信息歸納整理，DFMEA建議措施監(jiān)督實(shí)施、追

蹤，實(shí)施效果反饋，根據(jù)DFMEA和客戶需求等信息制定控制計(jì)劃，

并參與

O,S,D參數(shù)評估.CQE:Beresponsibleforthecustomerdemandinformationsummary,

DFMEAsuggestedmeasuressupervisionandimplementation,

trackingandeffectfeedback,accordingtotheDFMEAandrequirementsforinformationsuchascontrolplan,andparticipatein

O,S,Dparameterevaluation.三、DFMEA制作流程

DFMEAMakeprocess

注：團(tuán)隊(duì)制定目標(biāo)，使團(tuán)隊(duì)清楚新產(chǎn)品或以改善為

目標(biāo)，并需要了解客戶需求。

Note:Theteamsetgoals,maketheteamclear

newproductsortoimproveasthegoal,and

needtounderstandcustomerneeds.

使用方法；Methodofapplication.

客戶要求的設(shè)計(jì)/工程SPEC；Customer

requestedproject&EngineeringSPEC.

產(chǎn)品信賴；ProductTrust.

制程、生產(chǎn)、裝配要求；Process,Production

AssembleofRequirement.

品質(zhì)目標(biāo).QualityDestination.組成DFMEA團(tuán)隊(duì)ConstituteDFMEATeam確定目標(biāo)ConfirmDestination三、DFMEA制作流程DFMEAMakeprocess產(chǎn)品設(shè)計(jì)及類類似產(chǎn)品設(shè)計(jì)計(jì)的問題及原原因；Productdesignandsimilarproductdesignproblemsandreasons制造工藝及類類似產(chǎn)品制程程中常及的不不良原因；Manufacturingprocessandsimilarproductsinprocessandbadreason.類似產(chǎn)品的制制程能力及原原因；Similarproductsofprocesscapabilityandthereason.類似產(chǎn)品的客客訴及原因；；Similarproductsofcustomercomplaintandthereason.類似產(chǎn)品的依依賴性失效及及原因；Similarproductsthedependenceofthefailureandthereason.類似產(chǎn)品的管管理性問題；；Similarproductsofmanagerialproblems.資料收集DataCollection三、DFMEA制作流程DFMEAMakeprocess使用維修；UseMaintain.環(huán)境.Environment.表格格格式TableFormat.分層層層次DelaminationAdministrativelevels.失效定定義FailureDefinition.成果整整合AchievementIntegration.時(shí)機(jī)Opportunity.資料收收集DataCollection制訂執(zhí)執(zhí)行方方案FormulateimplementPlan三、DFMEA制作流流程DFMEAMakeprocess分析制制程特特性AnalysisProcessCharacter定義制制造流流程DefinitionproductionProcess分析產(chǎn)產(chǎn)品特特性AnalysisProductCharacter分析析失失效效原原因因AnalysisFailureCause分析析現(xiàn)現(xiàn)行行控控制制方方法法AnalysisControlMethod分析析失失效效效效應(yīng)應(yīng)AnalysisFailureEffect分析析發(fā)發(fā)生生率率AnalysisOccurrenceRate分析析難難檢檢度度AnalysisDetection分析析嚴(yán)嚴(yán)重重度度AnalysisSeverity計(jì)算算風(fēng)風(fēng)險(xiǎn)險(xiǎn)優(yōu)優(yōu)先先數(shù)數(shù)CalculatedRiskPriorityNumber分析析制制程程特特性性AnalysisProcessCharacter三、、DFMEA制作作流流程程DFMEAMakeprocess決定定優(yōu)優(yōu)先先改改善善的的失失效效模模式式DecideAmeliorativeFailureMode建議議改改善善措措施施RecommendationImprovementMeasures改善善實(shí)實(shí)施施ImprovementImplement結(jié)果果確確認(rèn)認(rèn)有有效效ResultNotarizeEffective四、、DFMEA關(guān)鍵鍵參參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重重度度、、發(fā)發(fā)生生率率、、難難檢檢度度、、風(fēng)風(fēng)險(xiǎn)險(xiǎn)優(yōu)優(yōu)生生數(shù)數(shù)Severity,Occurrence,Detection,RPN嚴(yán)重重度度Severity-----------------------------S發(fā)生生率率Occurrence------------------------O難檢檢度度Detection---------------------------D風(fēng)險(xiǎn)險(xiǎn)優(yōu)優(yōu)生生數(shù)數(shù)RiskPriorityNumber-------RPNRPN=S*O*D四、、DFMEA關(guān)鍵鍵參參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重重度度Severity衡量失失效效的的影影響響程程度度.Assessmentfailureincidence失效效影影響響產(chǎn)產(chǎn)品品或或制制程程，，某某一一失失效效會會對對產(chǎn)產(chǎn)品品外外觀觀、、結(jié)結(jié)構(gòu)構(gòu)、、功功能能、、性能能穩(wěn)穩(wěn)定定性性、、可可靠靠性性的的影影響響；；或或?qū)ο孪乱灰粋€(gè)個(gè)制制程程，，使使用用者者和和設(shè)設(shè)備的的影影響響；；或或?qū)ψ钭罱K終客客戶戶，，政政府府法法規(guī)規(guī)、、安安全全、、環(huán)環(huán)保保等等的的違違及及.Failureaffectproductorprocess,afailuretoproductappearance,structure,function,performancestabilityandreliabilityoftheinfluence;Ortothenextprocess,theuserandtheinfluenceoftheequipment;Ortoendcustomers,governmentregulations,safety,andenvironmentalprotection,andadefault.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度Severity嚴(yán)重度的的劃分標(biāo)標(biāo)準(zhǔn)---------------------------------------主觀判定定SeverityClassificationStandard-------------------SubjectivityDecide其大小由由失效模模式的影影響程度度而定，，以1至10表示等級級.It’ssizeofthefailuremodeoftheinfluencedegreetodecide,be1to10showlevel.1級最輕微微，10級最嚴(yán)重重.1Levelbestslight,10Levelbestgrave.1級-------------------------------幾乎不會會有什么么影響.1Level--------------------------Almosthasnoinfluence.10級-----------------------------違反安全全和法規(guī)規(guī).10Level-------------------------Violationofsafetyandregulations.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度分分類SeverityClassify耐火性、、自然性性、UL、RHoS&HFFireResistance,Naturalness,UL,RHoS&HF一、危危險(xiǎn)特性性Catastrophic工業(yè)標(biāo)準(zhǔn)準(zhǔn)(無法滿足足而不能能銷售））IndustryStandardIncapableConnotMarket.客戶要求求CustomerRequest內(nèi)部工程程需要由由Critical測量項(xiàng)目目InternalENGneedforcriticalmeasureproject四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度分分類SeverityClassify客戶及供供應(yīng)商共共同制定定特性；；CustomerandSuppliertogetherformulatefeatures.二、重大大特性Significant或客戶指指定特性性，如導(dǎo)導(dǎo)電或絕絕緣；(滿足而而不能能銷售售給指指定客客戶)Orcustomerappointfeatures,ForinstanceEC&Insulation.ContentConnotMarket設(shè)計(jì)工工程指指定的的特性性；DesignationCustomerDEappointfeatures.行業(yè)標(biāo)標(biāo)準(zhǔn).Industrialstandard.四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter嚴(yán)重度度分類類SeverityClassify可靠性性測試試，如如拉拔拔力測測試；；.ReliabilityTesting,Forexampledrawingforcetest.三、主主要特特性Major產(chǎn)品制制程不不良率率及分分析Productprocessrejectratioandanalysis.四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter嚴(yán)重度度等級級標(biāo)準(zhǔn)準(zhǔn)SeverityRankStandard等級/評分Rank劃分標(biāo)準(zhǔn)DivideStandard1幾乎無影響Almostnoinfluence2產(chǎn)品在客戶使用組裝過程中，組裝性差，客戶一般難已發(fā)現(xiàn)，關(guān)注的問題.Productsinthecustomerstouseassemblyprocess,assemblysexdifference,thecustomergeneraldifficulthasfound,payattentiontotheproblem.3產(chǎn)品之中主要應(yīng)用的功能稍有瑕疵，如絕緣等，非專業(yè)人員無法識別，EMCII級要求.Theproductismainlyusedinthefunctionoftheslightlydefects,suchasinsulation,laypeoplecan'tidentify,EMClevelIIrequirements.4在高于產(chǎn)品承諾的環(huán)境中使用失效，但此環(huán)境低于公司內(nèi)部控制標(biāo)準(zhǔn)或者已達(dá)到行業(yè)協(xié)會標(biāo)準(zhǔn)要求，EMCI級要求.不符合標(biāo)準(zhǔn)化的定義.Intheaboveproductpromisedenvironmentwithfailure,buttheenvironmentislowerthantheinternalcontrolstandardsorhasreachedindustryassociationstandardrequirements,EMCIlevelrequirement.Donotconformtothestandarddefinition.四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter嚴(yán)重度度等級級標(biāo)準(zhǔn)準(zhǔn)SeverityRankStandard等級/評分Rank劃分標(biāo)準(zhǔn)DivideStandard5存在的問題使產(chǎn)品長期運(yùn)行的可靠性能降低，如產(chǎn)品粘力、導(dǎo)電產(chǎn)品的導(dǎo)電性能等，產(chǎn)品結(jié)構(gòu)復(fù)雜，甚至需要培訓(xùn)才能完成或當(dāng)前的技術(shù)無法解決的功能性問題.Problemsmaketheproductlong-termoperationofthelowerreliability,suchasproductviscousforce,conductiveproductsofconductiveperformanceandsoon,theproductstructureiscomplex,evenneedtrainingtocompleteorcurrenttechnologycannotsolvetheproblemoffunctional.6產(chǎn)品維護(hù)復(fù)雜，裝配、生產(chǎn)非常困難；設(shè)計(jì)的產(chǎn)品公司工藝無法完成；客戶獨(dú)特配件的兼容性問題；不能95以%以上機(jī)率復(fù)現(xiàn)的問題；計(jì)算機(jī)監(jiān)測功能失效或誤差大.Productmaintenance,assembly,productionisverydifficult;Designproductscompanyprocesswasunabletocomplete;Customeruniqueaccessoriescompatibilityproblem;Can't95to%aboveprobabilityreproduction;Computermonitoringfunctionfailureorbigerror.7客戶關(guān)注的重點(diǎn)功能性問題或者是產(chǎn)品主推場所應(yīng)用的兼容性問題；產(chǎn)品量化參數(shù)不達(dá)標(biāo).Customerfocusofconcernfunctionalproblemsoristheproductofthemainplacetheapplicationcompatibilityproblem;Productquantitativeparametersnotstandard.四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter嚴(yán)重度度等級級標(biāo)準(zhǔn)準(zhǔn)SeverityRankStandard等級/評分Rank劃分標(biāo)準(zhǔn)DivideStandard8基本功能失效，失效影響計(jì)算機(jī)數(shù)據(jù)處理功能.Thebasicfunctionfailureandinfluencethecomputerdataprocessingfunction.9影響產(chǎn)品安全運(yùn)行或者包含不符合法律、法規(guī)；產(chǎn)品執(zhí)行標(biāo)準(zhǔn)影響人身安全；產(chǎn)品失效時(shí)有警告.Influencethesafeoperationoftheproductorcontaindoesnotcomplywiththelaws,rulesandregulations.Productstandardsaffectpersonalsafety;Productfailureiswarning.10影響產(chǎn)品安全運(yùn)行或者包含不符合法律、法規(guī)；產(chǎn)品執(zhí)行標(biāo)準(zhǔn)影響人身安全；產(chǎn)品失效時(shí)無警告.Influencethesafeoperationoftheproductorcontaindoesnotcomplywiththelaws,rulesandregulations.Productstandardsaffectpersonalsafety;Productfailureisn’twarning.四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter發(fā)生率率Occurrence某一原原因而而導(dǎo)致致失效效發(fā)生生的幾幾率.Areasontotheoddsoffailure.劃分標(biāo)標(biāo)準(zhǔn)：：依據(jù)據(jù)不良良品出出現(xiàn)的的機(jī)率率來定定，以以1至10表示等等級.Thedivisionstandard:accordingtotheprobabilityofbadproductappearedtodecide,be1to10showlevel.1級最輕輕微，，10級最嚴(yán)嚴(yán)重.1Levelbestslight,10Levelbestgrave.1級-------------------------------幾乎不不會發(fā)發(fā)生.1Level--------------------------Almostwon'thappen.10級-----------------------------肯定會會發(fā)生生.10Level-------------------------Willhappen四、DFMEA關(guān)鍵參參數(shù)DFMEAKeyParameter發(fā)生率率Occurrence劃分標(biāo)標(biāo)準(zhǔn)--------------------------------------CPK、主觀觀判定定、統(tǒng)統(tǒng)計(jì)資資料DivideStandard--------------CPK,Subjectivejudge,statisticalinformation劃分標(biāo)準(zhǔn)DivideStandard等級/評分Rank描述Describe發(fā)生率OccurrenceCPK1(Remote)幾乎不可能發(fā)生Almostwon'thappen.1/1500K≥1.672(VeryLow)有輕度發(fā)生的可能Withmildpossible1/150K≥1.503(Low)有可能發(fā)生possible1/15K≥1.334(Moderate)偶爾發(fā)生，但不占有大的比例Occasionallyoccur,butdon'thavegreatproportion1/2K≥1.175(Moderate)1/400PCS≥1.006(Moderate)1/80PCS≥0.83四、DFMEA關(guān)鍵參數(shù)DFMEAKeyParameter發(fā)生率Occurrence劃分標(biāo)準(zhǔn)--------------------------------------CPK、主觀判定定、統(tǒng)計(jì)資資料DivideStandard--------------CPK,Subjectivejudge,statisticalinformation劃分標(biāo)準(zhǔn)DivideStandard等級/評分Rank描述Describe發(fā)生率OccurrenceCPK7(High)經(jīng)常發(fā)生Oftenoccur1/20PCS≥0.678(High)1/8PCS≥0.519(Veryhigh)幾乎不可避勉Almostdonotavoidlayer1/3PCS≥0.3310(Veryhigh)1/2PCS<0.33四、DFMEA關(guān)鍵參數(shù)DFMEAKeyParameter難檢度Detection在現(xiàn)行的控控制措施下下，偵測失失效發(fā)生的的能力.Inthecurrentcontrolmeasures,theabilitytodetectfailurehappened.劃分標(biāo)準(zhǔn)：：依據(jù)失效效模式檢驗(yàn)驗(yàn)的難易程程度來定，，以1至10表示等級.Thedivisionstandard:Accordingtothefailuremodeofthetestdifficultytoset,be1to10showlevel.1級最容易，，10級為幾乎不不可能發(fā)現(xiàn)現(xiàn).1Levelbesteasy,10LevelforAlmostimpossibilityfind.1級-----------------------用有效的手手段完全可可以檢測出出來1Level-------------------Witheffectivemeanscompletelycanbedetected.10級----------------------無任何手段段可以檢測測出來.10Level------------------Nomeanscanbedetected.四、DFMEA關(guān)鍵參數(shù)DFMEAKeyParameter難檢度Detection劃分標(biāo)準(zhǔn)--------------------------------------主觀判定、、統(tǒng)計(jì)資料料DivideStandard--------------Subjectivejudge,statisticalinformation劃分標(biāo)準(zhǔn)DivideStandard等級/評分Rank描述Describe可偵度Detection1~2幾乎可以肯定地檢測出來Almostcertainlydetected≥99.99%3~5有良好的手段可以檢測出來Havegoodmeanscanbedetected≥99.80%6~8可能能檢測出來Mightbeabletotestout≥98.00%9有可能檢測不出Maycannotbedetected≥90.00%10很有可能檢測不出來Verylikelytestdoesnotcomeout≤90.00%四、DFMEA關(guān)鍵參數(shù)DFMEAKeyParameter風(fēng)險(xiǎn)系數(shù)RiskPriorityNumberRPN=S*O*D風(fēng)險(xiǎn)系數(shù)RPN排出次序后后，RPN越大越優(yōu)先先解決.RPN在100以上必須解解決；50<RPN<100應(yīng)盡可能解解決，不能能解決必須須加嚴(yán)控制制；RPN<50可不加控制.當(dāng)嚴(yán)重度(S)很高或發(fā)生生率(O)很高時(shí)，不不管RPN大小如何，，都必制定相應(yīng)改改善或控制制措施，并并指定責(zé)任任人和改善善完成日期期.RiskcoefficientRPNdischargeorder,thebiggertheRPNpriority.RPNinmorethan100mustbesolved;50<RPN<100shouldasfaraspossibletosolve,can'tsolvemustbetightenedcontrol;RPN<50don'taddcontrol.Whentheseverity(S)orhighincidence(O)isveryhigh,nomatterhowRPNsizewillbeformulatethecorrespondingimprovementorcontrolmeasures,andappointresponsiblepersonsandimprovethecompletiondate.如何制定改改善措施Howtomaketheimprovementmeasures針對預(yù)防/糾正措施，以以降低評價(jià)價(jià)等級的內(nèi)內(nèi)容順序?yàn)闉椋簢?yán)重度度、發(fā)生率率及偵測度；；Aimingatpreventing/correctivemeasures,inordertoreducethecontentoftheevaluationgradeorder:(S),(O),(D).通過設(shè)計(jì)變變更來消除除或控制一一個(gè)或多個(gè)個(gè)失效模式式的起因機(jī)機(jī)理，能降降低嚴(yán)重度等級；；Throughthedesignchangetoeliminateorcontroloneormoreofthecauseofthefailuremodemechanism,canreducetheseveritylevel;透過設(shè)計(jì)變變更，去除除或管制某某一或多個(gè)個(gè)影響失效效模式的原原因或設(shè)備備，只能降低發(fā)生率率的等級.Throughthechangeofthedesign,removeorcontroloneormoreofthecauseofthefailuremodeeffectorequipment,canreducetheincidenceofgrade.增加設(shè)計(jì)驗(yàn)證證，修改測試試計(jì)劃，修改改原物料規(guī)格格，只可降低低難檢度.Toincreasethedesignverification,modifyingthetestplan,modifytheoriginalmaterialspecifications,canonlyreducethedifficultdegreeoftest.五、DFMEA表單填寫說明明1

DFMEANotesoncompletingtheform(1)DFMEA編號：填入DFMEA文件的編號，，以便要詢；；DFMEANumbers:fillintheDFMEAfileNumbers,sothattoinformation;項(xiàng)目：填入所所分析的系統(tǒng)統(tǒng)、子系統(tǒng)或或零件的過程程名稱，編號號；Project:fillintheanalysisofthesystem,subsystemorpartsoftheprocessname,Numbers;設(shè)計(jì)責(zé)任：部部門、小組還還應(yīng)包括供方方的名稱；Designresponsibility:department,theteamalsoshouldincludethenameofthesupplier;填入負(fù)責(zé)DFMEA工作的工程師師姓名、電話話及所在公司司名稱；FillintheresponsibleoftheengineersDFMEAname,phonenumberandthenameofthecompany;填入將使用或或正被分析的的設(shè)計(jì)過程影影響的預(yù)期的的機(jī)型和料號號；Fillinwilluseorarebeinganalyzedtheinfluenceofthedesignprocessoftheexpectedtypeandmaterialnumber;關(guān)鍵日期：填填入DFMEA初次預(yù)定完成成日期，該日日期不應(yīng)超過過計(jì)劃開始設(shè)設(shè)計(jì)生產(chǎn)發(fā)布布日期.Thekeydate:fillintheDFMEAfirsttargetcompletiondate,thisdateshallnotexceedthedesignplantobeginproductionreleasedate.五、DFMEA表單填寫說明明2

DFMEANotesoncompletingtheform(2)DFMEA日期：填入編編制DFMEA原始稿的日期期及最新修訂訂日期；DFMEAdate:fillinthedrawupDFMEAdateandlatestrevisiondate.核心小組：列出出有權(quán)確定和和執(zhí)行任務(wù)的的責(zé)任部門和和個(gè)人姓名，，如果對某一一特定原因無無建議措施，，那么就在該欄中寫寫“N/A”.Thecoreteam:listshallhavetherighttodetermineandimplementtheresponsibilityofthedepartmentandindividualtaskname,ifforAparticularreasonnosuggestedmeasures,thenwriteinthecolumnof"N/A".項(xiàng)目/功能：填入被被分析項(xiàng)目的的名稱和編號號，若該項(xiàng)目目有多種功能能，且有不同同的失效模式式，應(yīng)把所有有功都單獨(dú)列出.Project/function:fillinthenameoftheprojectareanalyzedandNumbers,iftheprojecthasavarietyoffunctions,andhavedifferentfailuremode,weshouldputallfunctionsarelistedseparately.潛在失效模式式：對一個(gè)特特定項(xiàng)目及其其功能，應(yīng)用用規(guī)范化，專專業(yè)性的術(shù)語語來列出每一一個(gè)潛在的失失效模式前提是這種失失效可能發(fā)生生，但不一定定發(fā)生.Potentialfailuremode:foraspecificprojectanditsfunction,theapplicationofstandardized,professionaltermstolisteachpotentialfailuremodeprovidedthatfailuremayoccur,butdoesnotnecessarilyoccur.五、DFMEA表單填寫說明明3DFMEANotesoncompletingtheform(3)潛在失效后果果，就是失效效模式對系統(tǒng)統(tǒng)功能的影響響，一般是客客戶在使用時(shí)時(shí)看到的狀況況；Potentialfailureconsequences,isthefailuremodeoftheinfluenceofthesystemfunction,itistoseethecustomersintheuseofthesituation.嚴(yán)重度(S)Severity分級（重要程程序）用于對對零件、系統(tǒng)統(tǒng)、子系統(tǒng)的的產(chǎn)品特性分分