DFMEA失效模式與后果分析課件

DFMEA------失效模式與后果分析

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

日期：

Date：1-Feb-201312021/7/4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DFMEAMakeProcessDFMEAExample22021/7/4一、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)計的工程師或小組，在產(chǎn)品設(shè)計階段盡可能的范圍內(nèi)預(yù)估產(chǎn)品在設(shè)計上可能發(fā)生的缺點.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.PFMEAisPEorgrouptoresponsiblescheme,Asfaraspossibletheestimatedproductpossiblefaultsintheproductiveprocessorbefore.本章節(jié)重點講述DFMEAThischapterfocuseson

DFMEA.32021/7/4DFMEA的形成

DFMEAFormationDFMEA是由負(fù)責(zé)設(shè)計的工程師或小組，在盡可能的范圍內(nèi)預(yù)估產(chǎn)品在設(shè)計上可能發(fā)生的缺點，衡量該項缺點或可能造成的影響，并擬定為防止或檢測該缺點應(yīng)改善的設(shè)計控制，并推動其標(biāo)準(zhǔn)化作業(yè)，且必須配合設(shè)計發(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)計小組，即公司工程，運用設(shè)計，工程經(jīng)驗或分析方法等而形成的.Thefinalandallrelatedsystem,subsystemshouldbeincludedinassessment.DFMEAisthedesignteam,namelythecompanyproject,theuseofdesign,engineeringexperienceoranalysismethodsandform.42021/7/4DFMEA必備條件

DFMEAEssentialCondition

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

確認(rèn)每一個失效模式的效應(yīng)和原因；

Confirmeachfailuremodeeffectandreasons.

風(fēng)險優(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；Provideproblemofdataandimprovementaction.

52021/7/4DFMEA的動態(tài)鏈

DFMEATrendsCatenationDFMEA是個循環(huán)過程，在設(shè)計方案最終形成之時或之前開始.DFMEAisacyclicprocess,thedesignschemeoffinalformorbeforethestart.在產(chǎn)品開發(fā)各階段中，當(dāng)設(shè)計有變化或得到其他信息時，應(yīng)及時，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.62021/7/4二、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團體，提出DFMEA實施計劃，并組織召開DFMEA會議，分配團隊人員任務(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.72021/7/4二、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

時反饋到DFMEA團體負(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)問題點的收集并及時

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.82021/7/4二、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)督實施、追

蹤，實施效果反饋，根據(jù)DFMEA和客戶需求等信息制定控制計劃，

并參與

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

DFMEAsuggestedmeasuressupervisionandimplementation,

trackingandeffectfeedback,accordingtotheDFMEAandrequirementsforinformationsuchascontrolplan,andparticipatein

O,S,Dparameterevaluation.92021/7/4三、DFMEA制作流程

DFMEAMakeprocess

注：團隊制定目標(biāo)，使團隊清楚新產(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/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團隊ConstituteDFMEATeam確定目標(biāo)ConfirmDestination102021/7/4三、DFMEA制作流程

DFMEAMakeprocess

產(chǎn)品設(shè)計及類似產(chǎn)品設(shè)計的問題及原因；

Productdesignandsimilarproductdesignproblemsandreasons

制造工藝及類似產(chǎn)品制程中常及的不良原因；

Manufacturingprocessandsimilarproductsinprocessandbadreason.

類似產(chǎn)品的制程能力及原因；

Similarproductsofprocesscapabilityandthereason.

類似產(chǎn)品的客訴及原因；

Similarproductsofcustomercomplaintandthereason.

類似產(chǎn)品的依賴性失效及原因；

Similarproductsthedependenceofthefailureandthereason.

類似產(chǎn)品的管理性問題；

Similarproductsofmanagerialproblems.資料收集DataCollection112021/7/4三、DFMEA制作流程

DFMEAMakeprocess

使用維修；

UseMaintain.

環(huán)境.

Environment.

表格格式TableFormat.

分層層次DelaminationAdministrativelevels.

失效定義FailureDefinition.

成果整合AchievementIntegration.

時機Opportunity.資料收集DataCollection制訂執(zhí)行方案FormulateimplementPlan122021/7/4三、DFMEA制作流程

DFMEAMakeprocess分析制程特性AnalysisProcessCharacter定義制造流程DefinitionproductionProcess分析產(chǎn)品特性AnalysisProductCharacter分析失效原因AnalysisFailureCause分析現(xiàn)行控制方法AnalysisControlMethod分析失效效應(yīng)AnalysisFailureEffect分析發(fā)生率AnalysisOccurrenceRate分析難檢度AnalysisDetection分析嚴(yán)重度AnalysisSeverity計算風(fēng)險優(yōu)先數(shù)CalculatedRiskPriorityNumber分析制程特性AnalysisProcessCharacter132021/7/4三、DFMEA制作流程

DFMEAMakeprocess決定優(yōu)先改善的失效模式DecideAmeliorativeFailureMode建議改善措施RecommendationImprovementMeasures改善實施ImprovementImplement結(jié)果確認(rèn)有效ResultNotarizeEffective142021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度、發(fā)生率、難檢度、風(fēng)險優(yōu)生數(shù)Severity,Occurrence,Detection,RPN嚴(yán)重度Severity-----------------------------S發(fā)生率Occurrence------------------------O難檢度Detection---------------------------D風(fēng)險優(yōu)生數(shù)RiskPriorityNumber-------RPNRPN=S*O*D152021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度Severity衡量失效的影響程度.Assessmentfailureincidence失效影響產(chǎn)品或制程，某一失效會對產(chǎn)品外觀、結(jié)構(gòu)、功能、性能穩(wěn)定性、可靠性的影響；或?qū)ο乱粋€制程，使用者和設(shè)備的影響；或?qū)ψ罱K客戶，政府法規(guī)、安全、環(huán)保等的違及.Failureaffectproductorprocess,afailuretoproductappearance,structure,function,performancestabilityandreliabilityoftheinfluence;Ortothenextprocess,theuserandtheinfluenceoftheequipment;Ortoendcustomers,governmentregulations,safety,andenvironmentalprotection,andadefault.162021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度Severity嚴(yán)重度的劃分標(biāo)準(zhǔn)---------------------------------------主觀判定SeverityClassificationStandard-------------------SubjectivityDecide其大小由失效模式的影響程度而定，以1至10表示等級.It’ssizeofthefailuremodeoftheinfluencedegreetodecide,be1to10showlevel.1級最輕微，10級最嚴(yán)重.1Levelbestslight,10Levelbestgrave.1級-------------------------------幾乎不會有什么影響.1Level--------------------------Almosthasnoinfluence.10級-----------------------------違反安全和法規(guī).10Level-------------------------Violationofsafetyandregulations.172021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度分類SeverityClassify

耐火性、自然性、UL、RHoS&HF

FireResistance,Naturalness,UL,RHoS&HF一、危險特性Catastrophic工業(yè)標(biāo)準(zhǔn)(無法滿足而不能銷售）IndustryStandardIncapableConnotMarket.客戶要求

CustomerRequest

內(nèi)部工程需要由Critical測量項目

InternalENGneedforcriticalmeasureproject182021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度分類SeverityClassify

客戶及供應(yīng)商共同制定特性；

CustomerandSuppliertogetherformulatefeatures.二、重大特性Significant或客戶指定特性，如導(dǎo)電或絕緣；(滿足而不能銷售給指定客戶)Orcustomerappointfeatures,ForinstanceEC&Insulation.ContentConnotMarket設(shè)計工程指定的特性；

DesignationCustomerDEappointfeatures.

行業(yè)標(biāo)準(zhǔn).

Industrialstandard.192021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度分類SeverityClassify

可靠性測試，如拉拔力測試；

.ReliabilityTesting,Forexampledrawingforcetest.三、主要特性Major產(chǎn)品制程不良率及分析

Productprocessrejectratioandanalysis.202021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度等級標(biāo)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.212021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度等級標(biāo)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)品維護復(fù)雜，裝配、生產(chǎn)非常困難；設(shè)計的產(chǎn)品公司工藝無法完成；客戶獨特配件的兼容性問題；不能95以%以上機率復(fù)現(xiàn)的問題；計算機監(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.222021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter嚴(yán)重度等級標(biāo)準(zhǔn)SeverityRankStandard等級/評分Rank劃分標(biāo)準(zhǔn)DivideStandard8基本功能失效，失效影響計算機數(shù)據(jù)處理功能.Thebasicfunctionfailureandinfluencethecomputerdataprocessingfunction.9影響產(chǎn)品安全運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)品失效時有警告.Influencethesafeoperationoftheproductorcontaindoesnotcomplywiththelaws,rulesandregulations.Productstandardsaffectpersonalsafety;Productfailureiswarning.10影響產(chǎn)品安全運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)品失效時無警告.Influencethesafeoperationoftheproductorcontaindoesnotcomplywiththelaws,rulesandregulations.Productstandardsaffectpersonalsafety;Productfailureisn’twarning.232021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter發(fā)生率Occurrence某一原因而導(dǎo)致失效發(fā)生的幾率.Areasontotheoddsoffailure.劃分標(biāo)準(zhǔn)：依據(jù)不良品出現(xiàn)的機率來定，以1至10表示等級.Thedivisionstandard:accordingtotheprobabilityofbadproductappearedtodecide,be1to10showlevel.1級最輕微，10級最嚴(yán)重.1Levelbestslight,10Levelbestgrave.1級-------------------------------幾乎不會發(fā)生.1Level--------------------------Almostwon'thappen.10級-----------------------------肯定會發(fā)生.10Level-------------------------Willhappen242021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter發(fā)生率Occurrence劃分標(biāo)準(zhǔn)--------------------------------------CPK、主觀判定、統(tǒng)計資料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≥0.83252021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter發(fā)生率Occurrence劃分標(biāo)準(zhǔn)--------------------------------------CPK、主觀判定、統(tǒng)計資料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<0.33262021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter難檢度Detection在現(xiàn)行的控制措施下，偵測失效發(fā)生的能力.Inthecurrentcontrolmeasures,theabilitytodetectfailurehappened.劃分標(biāo)準(zhǔn)：依據(jù)失效模式檢驗的難易程度來定，以1至10表示等級.Thedivisionstandard:Accordingtothefailuremodeofthetestdifficulty

toset,be1to10showlevel.1級最容易，10級為幾乎不可能發(fā)現(xiàn).1Levelbesteasy,10LevelforAlmostimpossibilityfind.1級-----------------------用有效的手段完全可以檢測出來1Level-------------------Witheffectivemeanscompletelycanbedetected.10級----------------------無任何手段可以檢測出來.10Level------------------Nomeanscanbedetected.272021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter難檢度Detection劃分標(biāo)準(zhǔn)--------------------------------------主觀判定、統(tǒng)計資料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%282021/7/4四、DFMEA關(guān)鍵參數(shù)

DFMEAKeyParameter風(fēng)險系數(shù)RiskPriorityNumberRPN=S*O*D風(fēng)險系數(shù)RPN排出次序后，RPN越大越優(yōu)先解決.RPN在100以上必須解決；50<RPN<100應(yīng)盡可能解決，不能解決必須加嚴(yán)控制；RPN<50可不加控制.當(dāng)嚴(yán)重度(S)很高或發(fā)生率(O)很高時，不管RPN大小如何，都必制定相應(yīng)改善或控制措施，并指定責(zé)任人和改善完成日期.RiskcoefficientRPNdischargeorder,thebiggertheRPNpriority.RPNinmorethan100mustbesolved;50<RPN<100shouldasfaraspossibletosolve,can'tsolvemustbetightenedcontrol;RPN<50don'taddcontrol.Whentheseverity(S)orhighincidence(O)isveryhigh,nomatterhowRPNsizewillbeformulatethecorrespondingimprovementorcontrolmeasures,andappointresponsiblepersonsandimprovethecompletiondate.292021/7/4如何制定改善措施

Howtomaketheimprovementmeasures針對預(yù)防/糾正措施，以降低評價等級的內(nèi)容順序為：嚴(yán)重度、發(fā)生率及偵測度；Aimingatpreventing/correctivemeasures,inordertoreducethecontentoftheevaluationgradeorder:(S),(O),(D).通過設(shè)計變更來消除或控制一個或多個失效模式的起因機理，能降低嚴(yán)重度等級；Throughthedesignchangetoeliminateorcontroloneormoreofthecauseofthefailuremodemechanism,canreducetheseveritylevel;透過設(shè)計變更，去除或管制某一或多個影響失效模式的原因或設(shè)備，只能降低發(fā)生率的等級.Throughthechangeofthedesign,removeorcontroloneormoreofthecauseofthefailuremodeeffectorequipment,canreducetheincidenceofgrade.增加設(shè)計驗證，修改測試計劃，修改原物料規(guī)格，只可降低難檢度.Toincreasethedesignverification,modifyingthetestplan,modifytheoriginalmaterialspecifications,canonlyreducethedifficultdegreeoftest.302021/7/4五、DFMEA表單填寫說明1

DFMEANotesoncompletingtheform(1)

DFMEA編號：填入DFMEA文件的編號，以便要詢；DFMEANumbers:fillintheDFMEA,sothattoinformation;

項目：填入所分析的系統(tǒng)、子系統(tǒng)或零件的過程名稱，編號；Project:fillintheanalysisofthesystem,subsystemorpartsoftheprocessname,Numbers;

設(shè)計責(zé)任：部門、小組還應(yīng)包括供方的名稱；Designresponsibility:department,theteamalsoshouldincludethenameofthesupplier;

填入負(fù)責(zé)DFMEA工作的工程師姓名、電話及所在公司名稱；FillintheresponsibleoftheengineersDFMEAname,phonenumberandthenameofthecompany;

填入將使用或正被分析的設(shè)計過程影響的預(yù)期的機型和料號；Fillinwilluseorarebeinganalyzedtheinfluenceofthedesignprocessoftheexpectedtypeand

materialnumber;

關(guān)鍵日期：填入DFMEA初次預(yù)定完成日期，該日期不應(yīng)超過計劃開始設(shè)計生產(chǎn)發(fā)布日期.Thekeydate:fillintheDFMEAfirsttargetcompletiondate,thisdateshallnotexceedthedesign

plantobeginproductionreleasedate.312021/7/4五、DFMEA表單填寫說明2

DFMEANotesoncompletingtheform(2)

DFMEA日期：填入編制DFMEA原始稿的日期及最新修訂日期；

DFMEAdate:fillinthedrawupDFMEAdateandlatestrevisiondate.

核心小組：列出有權(quán)確定和執(zhí)行任務(wù)的責(zé)任部門和個人姓名，如果對某一特定原因無建議措施，那么

就在該欄中寫“N/A”.Thecoreteam:listshallhavetherighttodetermineandimplementtheresponsibilityofthe

departmentandindividualtaskname,ifforAparticularreasonnosuggestedmeasures,thenwritein

thecolumnof"N/A".

項目/功能：填入被分析項目的名稱和編號，若該項目有多種功能，且有不同的失效模式，應(yīng)把所有功

都單獨列出.

Project/function:fillinthenameoftheprojectareanalyzedandNumbers,iftheprojecthasavariety

offunctions,andhavedifferentfailuremode,weshouldputallfunctionsarelistedseparately.

潛在失效模式：對一個特定項目及其功能，應(yīng)用規(guī)范化，專業(yè)性的術(shù)語來列出每一個潛在的失效模式

前提是這種失效可能發(fā)生，但不一定發(fā)生.Potentialfailuremode:foraspecificprojectanditsfunction,theapplicationofstandardized,

professionaltermstolisteachpotentialfailuremodeprovidedthatfailuremayoccur,butdoesnot

necessarilyoccur.322021/7/4五、DFMEA表單填寫說明3

DFMEANotesoncompletingtheform(3)

潛在失效后果，就是失效模式對系統(tǒng)功能的影響，一般是客戶在使用時看到的狀況；

Potentialfailureconsequences,isthefailuremodeoftheinfluenceofthesystemfunction,itistosee

thecustomersintheuseofthesituation.嚴(yán)重度(S)

Severity

分級（重要程序）用于對零件、系統(tǒng)、子系統(tǒng)的產(chǎn)品特性分級：關(guān)鍵、主要、重要、輕微等.Classification(importantprogram)forparts,system,subsystemproductcharacteristicsclassification

:thekey,major,major,minor,etc.

潛在失效的起因/機理：潛在失效模式的起因是指一個設(shè)計或工藝薄弱部分的跡象；機理是什么導(dǎo)致失

效.Thecauseofthepotentialfailure/mechanism:thecauseofthepotentialfai