DFMEA-失效模式與后果分析

1、DFMEA-失效模式與后果分析(Design Failure Mode &Effect Analysis)Marian(Shenzhen)Co.,Ltd編制 ： 曹喜元 Formation By： Jack Cao 日期： Date： 1-Feb-2013主要內(nèi)容容Main content1.DFMEA介紹4.DFMEA關(guān)鍵參數(shù)數(shù)DFMEAPresentationDFMEA KeyParameter2.DFMEA職責(zé)5.DFMEA表單填寫寫說明DFMEAResponsibilityDFMEAFormFilling Explanation3.DFMEA制作流程程6.DFMEA案例DFMEAMak

2、e ProcessDFMEAExample一、DFMEA的介紹DFMEAPresentationDFMEA是FMEA中的一種種，F(xiàn)MEA分為：DFMEA和PFMEADFMEAisintheFMEAone type, FMEAContain:DFMEA&PFMEADFMEA是由負(fù)責(zé)責(zé)設(shè)計(jì)的的工程師師或小組組，在產(chǎn)產(chǎn)品設(shè)計(jì)計(jì)階段盡盡可能的的范圍內(nèi)內(nèi)預(yù)估產(chǎn)產(chǎn)品在設(shè)設(shè)計(jì)上可可能發(fā)生生的缺點(diǎn)點(diǎn).DFMEAisEngineeror group to responsiblescheme,Asfaraspossiblewithin thescopeoftheestimatedproductdesignonth

3、e possiblefaultsintheproductdesignstage.PFMEA是由負(fù)責(zé)責(zé)制造裝裝配的工工程師或或小組，預(yù)估產(chǎn)產(chǎn)品在生生產(chǎn)過程程階段或或之前可可能會(huì)發(fā)發(fā)生的缺缺點(diǎn).PFMEAisPEorgrouptoresponsiblescheme, As faraspossiblethe estimatedproductpossiblefaultsinthe productiveprocessorbefore.本章節(jié)重重點(diǎn)講述述DFMEAThis chapterfocusesonDFMEA.DFMEA的形成DFMEAFormationDFMEA是由負(fù)責(zé)責(zé)設(shè)計(jì)的的工程師師或小組組，

4、在盡盡可能的的范圍內(nèi)內(nèi)預(yù)估產(chǎn)產(chǎn)品在設(shè)設(shè)計(jì)上可可能發(fā)生生的缺點(diǎn)點(diǎn)，衡量量該項(xiàng)缺缺點(diǎn)或可可能造成成的影響響，并擬擬定為防防止或檢檢測(cè)該缺缺點(diǎn)應(yīng)改改善的設(shè)設(shè)計(jì)控制制，并推推動(dòng)其標(biāo)標(biāo)準(zhǔn)化作作業(yè)，且且必須配配合設(shè)計(jì)計(jì)發(fā)展之之程序反反復(fù)執(zhí)行行.DFMEAisEngineeror group to responsiblescheme, As faraspossiblewithinthe scope oftheestimated productdesign on thepossiblefaultsinthe productdesignstage,Measurethefaults or cancauseinfl

5、uence, andplan to preventortestingthedefect shouldbeimproveddesigncontrol,and promotethe standardizedoperation, andmust fitinwith thedevelopmentofdesignprogramandimplementation.最終成品品及其所所有相關(guān)關(guān)的系統(tǒng)統(tǒng)、子系系統(tǒng)都應(yīng)應(yīng)納入評(píng)評(píng)估.DFMEA是設(shè)計(jì)小小組，即即公司工工程，運(yùn)運(yùn)用設(shè)計(jì)計(jì)，工程程經(jīng)驗(yàn)或或分析方方法等而而形成的的.Thefinaland allrelated system,subsystem shoul

6、dbeincludedinassessment.DFMEAisthedesign team, namelythecompanyproject,theuse of design,engineeringexperienceoranalysismethods andform.DFMEA必備條件件DFMEAEssentialCondition確認(rèn)已知知及潛在在的失效效模式；Confirm theknownandthe potentialfailuremode.確認(rèn)每一一個(gè)失效效模式的的效應(yīng)和和原因；Confirm eachfailuremode effectandreasons.風(fēng)險(xiǎn)優(yōu)先先評(píng)估（嚴(yán)重性

7、性、發(fā)生生頻率、難檢度度）；Risk priority evaluation(severity,occurrencefrequencyanddifficult tocheckdegree)提供問題題的數(shù)據(jù)據(jù)及改善善行動(dòng)；Provide problemofdataandimprovementaction.DFMEA的動(dòng)態(tài)鏈鏈DFMEATrendsCatenationDFMEA是個(gè)循環(huán)環(huán)過程，在設(shè)計(jì)計(jì)方案最最終形成成之時(shí)或或之前開開始.DFMEAisa cyclicprocess,thedesign schemeoffinalform or beforethestart.在產(chǎn)品開開發(fā)各階階段中，當(dāng)

8、設(shè)計(jì)計(jì)有變化化或得到到其他信信息時(shí)，應(yīng)及時(shí)時(shí)，不斷斷地修改改，最終終在產(chǎn)品品加工圖圖樣完成成之前全全部結(jié)束束。Ineverystageofproduct development,when thedesignchange or getotherinformation,should be prompt,constantlymodified,finally,inproductprocessing patternuntilall over.二、DFEMA職責(zé)DFMEAResponsibility工程經(jīng)理理：DFMEA總體負(fù)責(zé)責(zé)人，負(fù)負(fù)責(zé)組建建DFMEA團(tuán)體，提提出DFMEA實(shí)施計(jì)劃劃，并組組織召開開D

9、FMEA會(huì)議，分分配團(tuán)隊(duì)隊(duì)人員任任務(wù)組織DFMEA評(píng)審，DFMEA審核.Project manager: generalmanager,responsiblefor DFMEA,thispaperputs forwardaDFMEAgroupDFMEAimplementationplan,andorganizea DFMEA meeting,distributionteam personneltaskOrganizationDFMEAreview, DFMEA audit.工程師：負(fù)責(zé)主主導(dǎo)DFMEA文件編寫寫、修改改和升級(jí)級(jí).Engineer:responsiblefor leadingDF

10、MEAdocumentpreparation,modificationandupgrade.二、DFEMA職責(zé)DFMEAResponsibility工程助理理：負(fù)責(zé)責(zé)客戶投投訴問題題，研發(fā)發(fā)、試產(chǎn)產(chǎn)、量產(chǎn)產(chǎn)中問題題 的收收集，及及時(shí)反饋到到DFMEA團(tuán)體負(fù)責(zé)責(zé)人處，并參與與O,S,D參數(shù)評(píng)估估，提供供量產(chǎn)CPK數(shù)據(jù).Project assistant:responsiblefor customer complaintproblem,researchandtrialproduction,thequantityofcollection,andrenderWhenthefeedbacktoDFMEA

11、groupplace,and participate in O,S,Dparameterevaluation,Supplyvolume productionCPKdata.試樣工程程師：負(fù)負(fù)責(zé)研發(fā)發(fā)產(chǎn)品測(cè)測(cè)試過程程 中所所出現(xiàn)問問題點(diǎn)的的收集并并及時(shí)反饋到DFMEA負(fù)責(zé)人處處，參與與O,S,D參數(shù)評(píng)估估.Sampleengineer: responsible forresearchanddevelopmentintheprocessofproduct testingproblemspointcollectionandtimelyfeedbacktotheDFMEAchiefplace, par

12、ticipate in O, S, Dparameter evaluation.二、DFEMA職責(zé)DFMEAResponsibilityCQE：負(fù)責(zé)客客戶需求求信息歸歸納整理理，DFMEA建議措施施監(jiān)督實(shí)實(shí)施、追追蹤，實(shí)施施效果反反饋，根根據(jù)DFMEA和客戶需需求等信信息制定定控制計(jì)計(jì)劃，并參與O,S,D參數(shù)評(píng)估估.CQE:Beresponsibleforthe customer demandinformationsummary,DFMEAsuggestedmeasuressupervisionand implementation,trackingandeffectfeedback, acco

13、rdingtotheDFMEAandrequirementsfor informationsuch as controlplan,and participate inO, S, Dparameterevaluation.三、DFMEA制作流程程DFMEAMake process注：團(tuán)隊(duì)隊(duì)制定目目標(biāo)，使使團(tuán)隊(duì)清清楚新產(chǎn)產(chǎn)品或以以改善為為目標(biāo)，并并需要了了解客戶戶需求。Note:Theteam setgoals,maketheteamclearnewproductsortoimprove as thegoal,andneed to understandcustomerneeds.使用方法法；Met

14、hodofapplication.客戶要求求的設(shè)計(jì)計(jì)/工程SPEC；Customerrequestedproject&EngineeringSPEC.產(chǎn)品信賴賴；ProductTrust.制程、生生產(chǎn)、裝裝配要要求；Process,ProductionAssembleofRequirement.品質(zhì)目標(biāo)標(biāo). QualityDestination.組成DFMEA團(tuán)隊(duì)Constitute DFMEA Team確定目標(biāo)標(biāo)Confirm Destination三、DFMEA制作流程程DFMEAMake process產(chǎn)品設(shè)計(jì)計(jì)及類似似產(chǎn)品設(shè)設(shè)計(jì)的問問題及原原因；Productdesignand sim

15、ilarproductdesignproblemsand reasons制造工藝藝及類似似產(chǎn)品制制程中常常及的不不良原因因；Manufacturingprocess andsimilarproductsinprocess andbadreason.類似產(chǎn)品品的制程程能力及及原因；Similar products of processcapabilityandthereason.類似產(chǎn)品品的客訴訴及原因因；Similarproductsofcustomercomplaintand thereason.類似產(chǎn)品品的依賴賴性失效效及原因因；Similarproductsthedependenceof

16、thefailureandthereason.類似產(chǎn)品品的管理理性問題題；Similarproductsofmanagerialproblems.資料收集集Data Collection三、DFMEA制作流程程DFMEAMake process使用維修修；UseMaintain.環(huán)境.Environment.表格格式式TableFormat.分層層次次DelaminationAdministrative levels.失效定義義FailureDefinition.成果整合合AchievementIntegration.時(shí)機(jī)Opportunity.資料收集集Data Collection制訂執(zhí)行

17、行方案Formulateimplement Plan三、DFMEA制作流程程DFMEAMake process分析制程程特性AnalysisProcess Character定義制造造流程Definition productionProcess分析產(chǎn)品品特性AnalysisProduct Character分析失效效原因AnalysisFailure Cause分析現(xiàn)行行控制方方法AnalysisControl Method分析失效效效應(yīng)AnalysisFailure Effect分析發(fā)生生率AnalysisOccurrence Rate分析難檢檢度AnalysisDetection分析嚴(yán)重重

18、度AnalysisSeverity計(jì)算風(fēng)險(xiǎn)險(xiǎn)優(yōu)先數(shù)數(shù)Calculated RiskPriorityNumber分析制程程特性AnalysisProcess Character三、DFMEA制作流程程DFMEAMake process決定優(yōu)先先改善的的失效模模式DecideAmeliorativeFailure Mode建議改善善措施RecommendationImprovementMeasures改善實(shí)施施ImprovementImplement結(jié)果確認(rèn)認(rèn)有效ResultNotarizeEffective四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度、發(fā)生率率、難檢檢度、風(fēng)風(fēng)

19、險(xiǎn)優(yōu)生生數(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(xiǎn)優(yōu)生生數(shù)Risk Priority Number-RPNRPN=S*O*D四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度Severity衡量失效的的影響程程度.Assessment failureincidence失效影響響產(chǎn)品或或制程，某一失失效會(huì)對(duì)對(duì)產(chǎn)品外外觀、結(jié)結(jié)構(gòu)、功功能、性能穩(wěn)定定性、可可靠性的的影響；或?qū)ο孪乱粋€(gè)制制程，使使用者和和設(shè)備的影響響；或?qū)?duì)最終客客戶，政政府法規(guī)規(guī)、安全全、環(huán)保保等的違違及.

20、Failure affectproduct or process, afailuretoproduct appearance, structure,function, performance stabilityandreliabilityofthe influence;Ortothe nextprocess,the userand theinfluenceofthe equipment;Ortoend customers,governmentregulations,safety,andenvironmentalprotection,andadefault.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKe

21、yParameter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-Subjectivity Decide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(jí)級(jí).Itssize of thefailure modeofthe influencedegreetodecide,be1 to 10showlevel.1級(jí)最輕微微，10級(jí)最嚴(yán)重重.1Levelbestslight, 10 Levelbestgrave.1級(jí)-幾乎不會(huì)會(huì)有什么么影響.1Level-Almosthasnoinfluence.10級(jí)-違反安全全和法規(guī)規(guī)

22、.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&HFFire Resistance, 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）IndustryStandardIncapableCon notMarket.客戶要求求CustomerRequest內(nèi)部工程程需要由由Critical測(cè)量項(xiàng)目目InternalENG needfor critical me

23、asureproject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；CustomerandSuppliertogetherformulate features.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；(滿足而不不能銷售售給指定定客戶)Orcustomerappoint features,ForinstanceEC&Insulation.Content ConnotMarket設(shè)計(jì)工程程指定的的特性；DesignationCustomerDEappoint feature

24、s.行業(yè)標(biāo)準(zhǔn)準(zhǔn).Industrial standard.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度分分類SeverityClassify可靠性測(cè)測(cè)試，如如拉拔力力測(cè)試；.ReliabilityTesting,Forexampledrawingforcetest .三、 主要要特性Major產(chǎn)品制程程不良率率及分析析Product processreject ratio andanalysis.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度等等級(jí)標(biāo)準(zhǔn)準(zhǔn)SeverityRank Standard等級(jí)/評(píng)分Rank劃分標(biāo)準(zhǔn)Divide Standard1幾乎無

25、影響Almost no influence2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.Products in the customers to use assembly process, assembly sex difference, the customer general difficult has found, pay attention to the problem.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(shí)別，EMC II級(jí)要求.The product is mainly used in the function of the slight

26、ly defects, such as insulation, laypeople cant identify, EMC level II requirements.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(huì)標(biāo)準(zhǔn)要求，EMC I級(jí)要求.不符合標(biāo)準(zhǔn)化的定義.In the above product promised environment with failure, but the environment is lower than the internal control standards or has reached industry associat

27、ion standard requirements, EMC I level requirement. Do not conform to the standard definition.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度等等級(jí)標(biāo)準(zhǔn)準(zhǔn)SeverityRank Standard等級(jí)/評(píng)分Rank劃分標(biāo)準(zhǔn)Divide Standard5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 .Problems make the product long-term operation

28、of the lower reliability, such as product viscous force, conductive products of conductive performance and so on, the product structure is complex, even need training to complete or current technology cannot solve the problem of functional.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

29、題；計(jì)算機(jī)監(jiān)測(cè)功能失效或誤差大.Product maintenance, assembly, production is very difficult; Design products company process was unable to complete; Customer unique accessories compatibility problem; Cant 95 to % above probability reproduction; Computer monitoring function failure or big error.7客戶關(guān)注的重點(diǎn)功能性問題或者是產(chǎn)品主推場(chǎng)

30、所應(yīng)用的兼容性問題；產(chǎn)品量化參數(shù)不達(dá)標(biāo).Customer focus of concern functional problems or is the product of the main place the application compatibility problem; Product quantitative parameters not standard.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter嚴(yán)重度等等級(jí)標(biāo)準(zhǔn)準(zhǔn)SeverityRank Standard等級(jí)/評(píng)分Rank劃分標(biāo)準(zhǔn)Divide Standard8基本功能失效，失效影響計(jì)算機(jī)數(shù)據(jù)處理功能.The b

31、asic function failure and influence the computer data processing function.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.Influence the safe operation of the product or contain does not comply with the laws, rules and regulations. Product standards affect personal safety; Product failure is warning.10影響

32、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.Influence the safe operation of the product or contain does not comply with the laws, rules and regulations. Product standards affect personal safety; Product failure isnt warning.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter發(fā)生率Occurrence某一原因因而導(dǎo)致致失效發(fā)發(fā)生的幾幾率.A reasontotheoddso

33、ffailure.劃分標(biāo)準(zhǔn)準(zhǔn)：依據(jù)據(jù)不良品品出現(xiàn)的的機(jī)率來來定，以以1至10表示等級(jí)級(jí).Thedivisionstandard: accordingtotheprobabilityofbad productappearedtodecide, be1 to 10showlevel.1級(jí)最輕微微，10級(jí)最嚴(yán)重重.1Levelbestslight, 10 Levelbestgrave.1級(jí)-幾乎不會(huì)會(huì)發(fā)生.1Level- Almostwonthappen.10級(jí)-肯定會(huì)發(fā)發(fā)生.10Level-Will happen四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter發(fā)生率Occurrence劃

34、分標(biāo)準(zhǔn)準(zhǔn)-CPK、主觀判判定、統(tǒng)統(tǒng)計(jì)資料料DivideStandard-CPK, Subjectivejudge, statisticalinformation劃分標(biāo)準(zhǔn) Divide Standard等級(jí)/評(píng)分Rank描述Describe發(fā)生率OccurrenceCPK1(Remote)幾乎不可能發(fā)生Almost wont happen.1/1500K1.672(Very Low)有輕度發(fā)生的可能With mild possible1/150K1.503(Low)有可能發(fā)生possible1/15K1.334(Moderate)偶爾發(fā)生，但不占有大的比例Occasionally occur,

35、but dont have great proportion1/2K1.175(Moderate)1/400PCS1.006(Moderate)1/80PCS0.83四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter發(fā)生率Occurrence劃分標(biāo)準(zhǔn)準(zhǔn)-CPK、主觀判判定、統(tǒng)統(tǒng)計(jì)資料料DivideStandard-CPK, Subjectivejudge, statisticalinformation劃分標(biāo)準(zhǔn) Divide Standard等級(jí)/評(píng)分Rank描述Describe發(fā)生率OccurrenceCPK7(High)經(jīng)常發(fā)生Often occur1/20PCS0.678(High

36、)1/8PCS0.519(Very high)幾乎不可避勉Almost do not avoid layer1/3PCS0.3310(Very high)1/2PCS0.33四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter難檢度Detection在現(xiàn)行的的控制措措施下，偵測(cè)失失效發(fā)生生的能力力.Inthecurrentcontrol measures,theabilitytodetectfailurehappened.劃分標(biāo)準(zhǔn)準(zhǔn)：依據(jù)據(jù)失效模模式檢驗(yàn)驗(yàn)的難易易程度來來定，以以1至10表示等級(jí)級(jí).Thedivisionstandard: Accordingtothefailuremod

37、e of thetestdifficultytoset,be1 to 10showlevel.1級(jí)最容易易，10級(jí)為幾乎乎不可能能發(fā)現(xiàn).1Levelbesteasy,10LevelforAlmostimpossibilityfind.1級(jí)-用有效的的手段完完全可以以檢測(cè)出出來1Level-Witheffectivemeanscompletelycanbedetected.10級(jí)-無任何手手段可以以檢測(cè)出出來.10Level-Nomeanscan be detected.四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter難檢度Detection劃分標(biāo)準(zhǔn)準(zhǔn)-主觀判定定、統(tǒng)計(jì)計(jì)資料Divid

38、eStandard-Subjectivejudge,statisticalinformation劃分標(biāo)準(zhǔn) Divide Standard等級(jí)/評(píng)分Rank描述Describe可偵度Detection12幾乎可以肯定地檢測(cè)出來Almost certainly detected99.99%35有良好的手段可以檢測(cè)出來Have good means can be detected99.80%68可能能檢測(cè)出來Might be able to test out98.00%9有可能檢測(cè)不出May cannot be detected90.00%10很有可能檢測(cè)不出來Very likely test do

39、es not come out90.00%四、DFMEA關(guān)鍵參數(shù)數(shù)DFMEAKeyParameter風(fēng)險(xiǎn)系數(shù)數(shù)Risk Priority NumberRPN=S*O*D風(fēng)險(xiǎn)系數(shù)數(shù)RPN排出次序序后，RPN越大越優(yōu)優(yōu)先解決決.RPN在100以上必須須解決；50RPN100應(yīng)盡可能能解決，不能解解決必須須加嚴(yán)控控制；RPN50可不加控制.當(dāng)嚴(yán)重度度(S)很高或發(fā)發(fā)生率(O)很高時(shí)，不管RPN大小如何何，都必必制定相應(yīng)應(yīng)改善或或控制措措施，并并指定責(zé)責(zé)任人和和改善完完成日期期.Risk coefficient RPNdischargeorder, thebiggerthe RPNpriority.R

40、PN in morethan100mustbesolved;50RPN100should as faraspossibletosolve,cantsolvemustbetightenedcontrol;RPN 50dontaddcontrol.Whentheseverity(S) or highincidence (O)isvery high, no matterhowRPN sizewillbeformulatethe correspondingimprovementorcontrolmeasures,and appointresponsiblepersonsandimprovethecom

41、pletiondate.如何制定定改善措措施Howtomaketheimprovementmeasures針對(duì)預(yù)防防/糾正措施，以降低低評(píng)價(jià)等等級(jí)的內(nèi)內(nèi)容順序序?yàn)椋簢?yán)嚴(yán)重度、發(fā)生率率及偵測(cè)度度；Aimingatpreventing/corrective measures,inordertoreducethe contentofthe evaluationgradeorder:(S), (O),(D).通過設(shè)計(jì)計(jì)變更來來消除或或控制一一個(gè)或多多個(gè)失效效模式的的起因機(jī)機(jī)理，能能降低嚴(yán)嚴(yán)重度等級(jí)級(jí)；Throughthedesign changetoeliminateorcontroloneormor

42、eofthecauseofthe failuremodemechanism, canreducethe severity level;透過設(shè)計(jì)計(jì)變更，去除或或管制某某一或多多個(gè)影響響失效模模式的原原因或設(shè)設(shè)備，只只能降低發(fā)發(fā)生率的的等級(jí).Throughthechange of thedesign, removeorcontrol oneormore of thecauseofthefailuremode effectorequipment, canreducethe incidenceofgrade.增加設(shè)計(jì)計(jì)驗(yàn)證，修改測(cè)測(cè)試計(jì)劃劃，修改改原物料料規(guī)格，只可降降低難檢檢度.Toincrease

43、thedesign verification,modifying thetest plan, modifytheoriginalmaterialspecifications, canonly reducethedifficult degreeoftest.五、DFMEA表單填寫寫說明1DFMEANotesoncompleting theform(1)DFMEA編號(hào)：填填入DFMEA文件的編編號(hào)，以以便要詢?cè)?；DFMEANumbers:fill in theDFMEAfile Numbers, so thattoinformation;項(xiàng)目：填填入所分分析的系系統(tǒng)、子子系統(tǒng)或或零件的的過程名名稱

44、，編編號(hào)；Project:fill in theanalysisofthesystem,subsystemorpartsofthe processname,Numbers;設(shè)計(jì)責(zé)任任：部門門、小組組還應(yīng)包包括供方方的名稱稱；Designresponsibility: department, theteam alsoshould includethe nameofthesupplier;填入負(fù)責(zé)責(zé)DFMEA工作的工工程師姓姓名、電電話及所所在公司司名稱；Fill in theresponsibleoftheengineers DFMEA name, phone numberandthename

45、of thecompany;填入將使使用或正正被分析析的設(shè)計(jì)計(jì)過程影影響的預(yù)預(yù)期的機(jī)機(jī)型和料料號(hào)；Fill in willuse or arebeinganalyzedtheinfluence of thedesignprocessoftheexpectedtypeandmaterialnumber;關(guān)鍵日期期：填入入DFMEA初次預(yù)定定完成日日期，該該日期不不應(yīng)超過過計(jì)劃開開始設(shè)計(jì)計(jì)生產(chǎn)發(fā)發(fā)布日期期.Thekey date: fillinthe DFMEA first targetcompletion date, thisdateshallnotexceed thedesignplantob

46、eginproduction releasedate.五、DFMEA表單填寫寫說明2DFMEANotesoncompleting theform(2)DFMEA日期：填填入編制制DFMEA原始稿的的日期及及最新修修訂日期期；DFMEAdate:fillinthedrawupDFMEAdate andlatestrevisiondate.核心小組：列出有有權(quán)確定定和執(zhí)行行任務(wù)的的責(zé)任部部門和個(gè)個(gè)人姓名名，如果果對(duì)某一一特定原原因無建建議措施施，那么么就在該欄欄中寫“N/A”.Thecoreteam:list shall havethe right to determineandimplement

47、 theresponsibilityofthedepartmentandindividualtask name, if forA particularreason no suggestedmeasures,thenwriteinthecolumnofN/A.項(xiàng)目/功能：填填入被分分析項(xiàng)目目的名稱稱和編號(hào)號(hào)，若該該項(xiàng)目有有多種功功能，且且有不同同的失效效模式，應(yīng)把所所有功都單獨(dú)列列出.Project/function: fillinthe nameofthe projectare analyzed andNumbers,iftheprojecthasavarietyoffunctions, an

48、dhave differentfailure mode, we shouldputall functionsarelisted separately.潛在失效效模式：對(duì)一個(gè)個(gè)特定項(xiàng)項(xiàng)目及其其功能，應(yīng)用規(guī)規(guī)范化，專業(yè)性性的術(shù)語語來列出出每一個(gè)個(gè)潛在的的失效模模式前提是這這種失效效可能發(fā)發(fā)生，但但不一定定發(fā)生.Potentialfailuremode:foraspecificproject anditsfunction, theapplicationofstandardized,professionaltermstolist eachpotential failuremodeprovidedtha

49、t failuremay occur,butdoesnotnecessarilyoccur.五、DFMEA表單填寫寫說明3DFMEANotesoncompleting theform(3)潛在失效效后果，就是失失效模式式對(duì)系統(tǒng)統(tǒng)功能的的影響，一般是是客戶在在使用時(shí)時(shí)看到的的狀況；Potentialfailure consequences,isthe failuremodeoftheinfluence of thesystemfunction, it is toseethecustomers in theuseofthesituation.嚴(yán)重度(S)Severity分級(jí)（重重要程序序）用于于對(duì)零件件、系統(tǒng)統(tǒng)、子系系統(tǒng)的產(chǎn)產(chǎn)品特性性分級(jí)：關(guān)鍵、主要、重要、輕微等等.Cla