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大家都应该对可靠性有这样的认识:即产品的可靠性不是测试出来的,而是设计出来的。
去年曾经在飞机上的一些随笔,拿来与大家分享。内容有些乱,有不对的地方,请大家指正。
DesignforReliability
Winosor
Jan25,2010
Quality
Conformancetosetstandardofform,fitorfunctionoftheproductuponarrivaltothecustomer
Goals:outgoingDPM:<Ydpmattime0specifiedbyUCspec.
•Reliability
Theprobabilitythataproductwillperformitsintendedfunctionforagiventimeunderspecifiedoperatingcondition.
Reliability=Profitability
IncreaseSalesRevenuesandmarketsharebyhighReputationforQualitywiththebrandimageoflessfieldreturns,lessqualityissueandin-housefirstpastyielddataetc.
EnhancetheCompetitiveAdvantageasaleadingmanufacturer.
Lesswarrantycostofservice,claims,recalls,liabilityexposure,andotherexpensesresult.
Goals:1.infantmortality:<Ydpmduringthefirst30days(or1yearetc);2.wearout:
<Xdpmfailureat7years(or10yearsetc.).
•HALT(HighlyAcceleratedLifeTest)&HASS(HighlyAcceleratedStressScreen) |
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