JEP143A可靠性評估方法

JEP143B.01 SOLIDSTATERELIABILITYASSESSMENTQUALIFICATIONMETHODOLOGIES 已经更新为B.01版本. JEP143B.01 (RevisionofJEP143B,April2008) [quote][b]Introduction[/b] Reliabilityisameasureoftheabilityofasolidstateproducttocontinuetomeetdatasheetspecifications overtime.Inanypopulationofsolidstateproductsthereisarangeinthetimetofailure,whichisthetime-to-failure distribution.Sincethetypicaltime-to-failuredistributionwillhaveacentralcharacteristicintheorderof hundredsorthousandsofyears,meansmustbederivedtoassessthetime-to-failuredistributioninrealtime. Failuremechanismmodelsprovideaphysicalandmathematicalrepresentationofhowthetime-to-failure distributionwillchangebychangingsomefactor. [b]Reliabilityassessmentandqualificationsystemsconsistofthefollowing:[/b] a)alistofapplicablefailuremodes,failuremechanisms,failurekinetics,andcauses; b)afailuremodel,includingasappropriatethevalidityandcorrectnessofthemodel; c)ameanstoacceleratethefailureprocess; d)alistofcriteriafortheacceptabilityofthefailurerates; e)thedefinitionsand/orcriteriaforafailure,e.g.,whenisadeviationafailure. Reliabilityassessmentsystemsprovideeconomicbenefitforbothmanufacturersandusers.Manufacturers canquantifythereliabilityoftheirproductsinordertounderstandwarrantyandothercostsassociated withpotentialreliabilityfailures.Userscanestimatethereliabilityofsystemsusingsolidstateproductsin ordertoquantifycostsassociatedwithsystemoperationorfailures.[/quote]

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