【正文】 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _S A M P L E17 THE FMEA FORM FMEA NUMBER ?Document number for Tracking the analysis System, Subsystem, Component name and number ?Indication of the level of analysis by reference to the name and reference number of the system, subsystem or ponent. Design Responsibility ?The name of the group, department, supplier or OEM 18 THE FMEA FORM Prepared by ?Name and contact number for the Engineer who prepared the FMEA Model Year(s)/ Vehicle ?The intended product model and proposed lines potentially affected by the ponents being analyzed. Key Date ?Initial due date for the FMEA not to exceed the scheduled production design release 19 THE FMEA FORM FMEA Date ?The date the original FMEA was piled and the latest revision date Core Team ?Those responsible, individuals and departments, who have the authority to identify and/or perform tasks ? NB team members names, departments and contact references are to be included in the distribution list. 20 THE FMEA FORM POTENTIALFAILURE M ODE AND EFFECTS ANALYSIS(DESIGN FMEA)9 10 11 12 13 14 15 16 17 18 19 20 22219 Item/Function 10 Potential Failure Modes 11 Potential Effect(s) of Failure 21 ITEM/FUNCTION 9 ? Name /reference of item analyzed ? References as on drawing ? Design level as on drawing ? Use experimental number prior to initial release ? Detail Function and Environment ? Multiple function = multiple modes 22 POTENTIAL FAILURE MODE 10 ? The manner in which the item being analyzed could fail to meet design intent ? May cause potential failure of a higher level system ? May be caused by a failure in a lower level system 23 POTENTIAL FAILURE MODE 10 ? List the potential failure mode for each ? Assume a mode can occur but may not ? Where has it gone wrong in the past? ? Has anything similar happened? ? Any concerns? ? Team can brainstorm ? Failure modes may occur only under certain conditions 24 POTENTIAL FAILURE MODE 2 Conditions may include: ? abnormal environment hot, cold, wet, dry, humidity... ? corrosive atmosphere Usage and abuse considered ? above average loading, rough handling ? high speed, irregular use 10 25 POTENTIAL FAILURE MODE 2 Typical Failure Modes... Cracked Deformed Leads bent Leakage Die misaligned Short Circuited Oxidized Fractured ...... are physical conditions not symptoms 10 26 POTENTIAL EFFECT(S) OF FAILURE 2 ? What does the customer see? ? How does customer recognize or notice the failure? ? External and internal Customers Defined as the customer perceived effects of the failure 11 27 POTENTIAL EFFECT(S) OF FAILURE ?For each failure mode, list its consequences on: ?Part function/performance ?Next higher assembly/system ?Vehicle/product, ?customer, ?Government regulation 11 28 WORKSHOP 2 FAILURE EFFECTS ? Company174。 Switch for xxxx as before ? Same Teams as before ? Nominate a new team leader ? Start to plete the blank Design FMEA ? Prepare list of Potential Failure Modes ? Prepare list of Potential Effects of failure 29 POTENTIAL EFFECT(S) OF FAILURE 2 Typical Failure Effects 11 Noise Operational Impaired Rough Intermittent Operation Unstable Unpleasant Odor Inoperative Poor Appearance Erratic Operation 30 POTENTIAL EFFECT(S) OF FAILURE As experienced by subsequent operation(s) ? Cannot fasten lid ? Cannot mount part ? Does not fit fixture Endanger operator 11 subsequent operation 31 ItemDe s c riptio n F un c ti onPotentialFailu reModePotentialEffe c t(s ) o fFailu rePa rt Na me : Hi tech Sw itchPa rt Nu mb e r: HT9 9 9 8 8 8 ABPa ss cu rre n t toCe n tra l li g h tingco n trolPi e zoele ctricCry stal mate ri a lcra cke dSw itch f a il sto p a sscu rre n tFun ctio n : Gen e ra te si g n a lwh e n actu a te9 10 11 32 THE FMEA FORM POTENTIALFAILURE M ODE AND EFFECTS ANALYSIS(DESIGN FMEA)9 10 11 12 13 14 15 16 17 18 19 20 222112 Severity 13 Classification 33 SEVERITY {S} 12 ? Effect on the customer if it occurs ? Effect on the next ponent, subsystem or system ? Design change is required to reduce the Severity Ranking index. The assessment of the seriousness of an effect (listed in column 11) of a potential failure mode 34 SEVERITY INDEX 12 the method of ranking seriousness ? Effect on the customer if it occurs ? Effect on the next ponent, subsystem or system ? Design change is required to reduce the Severity Ranking index. 35 Suggested Evaluation Criteria Effe c t Cr iter ia: Seve rit y o f Effec t Ra nkingHa za r d o u sWi th ou tWarn ingVe ry h igh se ve r ity ra n ki n g when a p o ten ti a lfai lu r e mo d e a ff e cts sa fe p ro d u ct o p e r a tiona n d /or i n volves n o n co m p lian ce wi thg o ve r n me n t re g u l a tion wi th o u t wa r n ing.10Ha za r d o u sWi thWarn ingVe ry h igh se ve r ity ra n ki n g when a p o ten ti a lfai lu r e mo d e a ff e cts sa fe p ro d u ct o p e r a tiona n d /or i n volves n o n co m p lian ce wi thg o ve r n me n t re g u l a tion wi th o u t wa r n ing.936 Suggested Evaluation Criteria Effe c t Cr iter ia: Seve rit y o f Effec t Ra nkingVe ryHi g hPro d u ct inoperabl e w ith lo ss ofp rima ry f u n cti o n8Hi g h Pro d u ct o p e ra b l e , b u t a t re d u cedle vel of pe rformance . Cu stom e r