FMEA-liteonseminar.ppt

Click to edit Master title style,*,*,*,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,FMEA,FMEA/CA/PA,An FMEA can reduce or eliminate the chance of implementing a preventive/corrective change which would create an even larger concern.,1,FMEA,Communication&coordination should occur between all type of FMEA(i.e.DFMEA,PFMEA,MFMEA,),2,FMEA,FMEA program is timeliness,Is“,bebore,-the-event”action,not an“after-the-fact”,Up front time product/process change can be most easily and inexpensively implemented,with minimized late change crises.,3,When should a FMEA be started,All,FMEAs,(DFMEA,PFMEA,)might be started at the same time.,The earlier,the better.,The Process FMEA should be initiated:,before or at the feasibility stage,prior to tooling for production,4,FMEA process sequence,SAE_FMEA_draft_std.PDF,p4,5,When should a FMEA be generatedWhat should be the scope of FMEA,There are three basic cases for which FMEAs are generated,Case 1:New designs,new technology,or new process.,The scope of the FMEA is the complete design,technology or process.,6,When should a FMEA be generatedWhat should be the scope of FMEA,Case 2:Modifications to existing design or process(assumes there is a FMEA for the,existing design or process).,The scope of the FMEA should focus on the modification to design or process,possible interactions due to the modification,and field history.,7,When should a FMEA be generatedWhat should be the scope of FMEA,Case 3:Use of existing design or process in a new environment,location,or application(assumes there is an FMEA for the existing design or process).,The scope of the FMEA is the impact of the new environment or location on the existing design or process.,8,The application of FMEA,MFMEA,System FMEA,Containment FMEA,Service FMEA,9SYSTEM FMEA,p51,10,DFMEA Failure Mode,Design Objectives(a statement of design objectives is often helpful),-FUNCTION 1,FAILURE MODE A,FAILURE MODE B,etc.,-FUNCTION 2,FAILURE MODE A,FAILURE MODE B,etc.,-etc.,Refer SAE p53,11,Summary Slide,PFMEA Failure Mode,12,PFMEA Failure Mode,Identifies process variables on which to focus process controls.,13,Effect,FTA,ETA,Bouline,Algebra,14,Current Control,Prevention(first priority/prefer approach),Detection,15,RPN/S/O/D-,the ratings are subjective,It is not appropriate to compare the ratings of one teams FMEA with the ratings of another teams FMEA,even if the product/process appear to be identical,since each team environment is unique and thus their respective individual ratings will be unique (i.e.,the ratings are subjective).,16,Mr.FMEA(FMEA facilitator),Unless the responsible engineer is experienced with FMEA and team facilitation,it is helpful to have an experienced FMEA Facilitator assist the team in its activities.,17,RECOMMENDED ACTION(s)-,Should be first directed at high severity regardless of the RPN,High RPN and other items designated by the team.,With the intent of reducing Severity,then Occurrence and then Detection.,18,FMEA and other tools,QFD,Perato,FTA/ETA,(Boulin,Algebra),Poka,-Yoke/Mistake Proof/Zero Quality Control,CA/PA,Design Control,Process Control,Knowledge management/Lesson learned,Database,Supply Chain(supplier/organization/customer),vs,Failure Mode/Effect/Cause,19,QFD,Identify function,customer,expection,Identify potential failure mode,20,Perato,RPN/S/O/D rating,identify priority of CA/PA,21,FTA/ETA,(Boulin,Algebra),Effect analysis,22,Poka,-Yoke/Mistake Proof/Zero Quality Control,determine recommended action,23,CA/PA,FMEA identify opportunities for CA/PA,24,Design Control,identify potential failure mode in DFMEA,25,Process Control,identify potential failure mode in PFMEA,26,Knowledge management/Lesson learned,team effort,27,Database,living document,to be updated,28,Supply Chain,supplier/organization/customer,vs,Failure Mode/Effect/Cause,29,Criticality analysis,Criticality.A relative measure of the consequences of a failure mode and its frequency of occurrences.,Criticality analysis(CA).A procedure by which each potential failure mode is ranked according to the combined influence of severity and probability of occurrence.(p44/80-mil 1629a),Severity.The consequences of a failure mode.Severity considers the worst potential consequence of a failure,determined by,the degree of injury,property damage,or system damage that could ultimately occur.,30,Try to give FMEA a definition,What is FMEA?,31,FMECA,MIL-STD-1629A,The failure mode,effects,and criticality analysis(FMFCA)is an essential,function in design,A design tool,32,What is FMEA,A living document,A design tool,A systemic,disciplined problem preventing method,33,