AcceleratedLifetest
2006
•Purpose
Generallyproduct’sreliabilitywasestimatedbylifetesting.However,withthedevelopmentoftechnology,productscanmaintainmanyyearsworkingtime.Wecan’tgettheinformationtoevaluatethelifeinshorttimewithtraditionaltestmethod.SoweneedtodoALT(acceleratedlifetest).Meantimewemustassurethefailuremodewillnotbeinterferedbythetestenvironment.DuetothefailuremodesofLEDlampsobeytheexponentdistributionpopularly,wecanusetemperaturestresstodoALT.Thereisachemicalandphysicalchangingprocessbetweenthelifeofelectroniccomponentsandtemperature.Arrheniusequationcanindicatethisreaction.AlsowecanuseArrheniusformularytocalculatetheacceleratedfactor(AF).Butthismodeisusedmainlyforsinglecomponent,notforsystem.LEDlampiscomposedbythedifferentcomponentsandleds,soweexpectwecanuseavalueexpresstheactivationenergyofsystem.
•Theory
InordertogainthestatusoflifeaboutproductsASAP,wedependonusingmorestrictstresstomaketheproductfailinshorttime,andrecordthedatatoanalyzethefailuredistribution,thenaccordingtothemathematicsformularycalculatethelife.
Lumenmaintenanceisusedtodefinethelifeoflamp;sowecanuseLumenoutputreductionasthefailuremode.
Arrheniusmode:
Accelerated Life test
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AcceleratedLifetest.pdf(175.28KB)
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可靠性验证试验方案.rar论坛前辈发表过的资料引用链结就行了
航天电连接器振动可靠性试验与分析
陈文华，崔杰，潘骏，卢献彪，相平
（(/浙江大学流体传动与控制国家重点实验室，浙江杭州）
（!/浙江科技学院机电工程系，浙江杭州）
（&/中国航天科技集团九院八二五厂，浙江杭州
摘要：以Y11X圆形电连接器为研究对象，通过对电连接器进行失效物理分析、加速寿命试验和试验数据的统计处理，求得了电连接器在随机振动应力作用下的可靠性参数估计值，并对所建的振动可靠性统计模型进行了验证。
关键词：电连接器；振动可靠性；统计分析
AnExtendedReliabilityGrowthModelForManaging
AndAssessingCorrectiveActions
LarryH.Crow,Ph.D.,CrowReliabilityResources,Madison
KeyWords:Reliabilitygrowth,Crow(AMSAA)model,Projections,Extendedreliabilitygrowthmodel,Maturitymetrics
ApplicationofQuantitativeAcceleratedLifeModels
onLoadSharingRedundancy
AdamantiosMettas;ReliaSoftCorporation,Tucson
PantelisVassiliou;ReliaSoftCorporation,Tucson
KeyWords:LoadSharing,SystemAnalysis,Acceleratedlifetesting,Time-varyingstresses,Time-dependentstresses,
Cumulativedamage,Step-stress,Maximumlikelihood