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发表于 2007-11-19 13:07:36
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IEC 62005-2-2001
或者是IEC62005-1,IEC62005-2,IEC62005-3,也行。主要是对标准号的了解不是很确切。纤维光学方面的加速寿命试验标准。
Reliabilityoffibreopticinterconnectingdevicesandpassivecomponents–
Part2:Quantitativeassessmentofreliabilitybasedonacceleratedageingtests–Temperatureandhumidity;steadystate
1Scope
ThispartofIEC62005providesabasisfordefiningreliabilitytestsforpassiveopticalcomponents.Itprovidesadviceonlifetestingprocedures,thecalculationoffailureratesandthepresentationofresults.Inadditiontosuchgeneralguidance,aworkedexampleillustratesthemethodofcalculatingtheinstantaneousfailurerateforadeviceduringitsservicelifetime,basedonacceleratedlifetests.
CONTENTS
FOREWORD..5
INTRODUCTION..9
1Scope....11
2Normativereferences.....11
3Guidanceontestingforwearoutfailures11
3.1Failuredistribution11
3.2Mediantimetofailure(MTF)...13
4Lifetestmatrix...15
5Workedexample19
5.1Testconditionmatrix...19
5.2Analysisofresults.19
5.3Calculatingmediantimetofailure..23
5.4Calculationoftemperatureaccelerationfactor.29
5.5Calculationofhumidityaccelerationfactor.31
5.6Extrapolationtoserviceconditions33
5.7Calculationoffailurerate..35
6Randomfailureratecalculations.39
7Implicationsforsystemreliability41
Figure1–Extrapolationofresultstodeterminetimetofailure....21
Figure2–Log-normalplotfordevicesintestconditionC27
Figure3–Log-normalplotfordevicesintestconditionE27
Figure4–ExponentialcurvefitforMTFversus1/T..31
Figure5–ExponentialcurvefitforMTFversusHR
..33
Figure6–Componentreliabilityinservice....37
Table1–Relativehumidity(%)atvarioustemperatureandabsolutehumidityconditions17
Table2–Matrixoftestconditions....19
Table3–Timestofailure(TTF)fordevicesintwolifetestconditions.....25
Table4–Mediantimestofailureforthreetemperaturesat85%HR.29
Table5–Mediantimestofailureforthreehumiditylevelsat85°C...31
Table6–Mediantimestofailureindifferentconditionsbasedonworkedexampledata..35
Table7–Calculatedfailureratesat25°C/85%HR..37 |
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