Weibull-Reliability-Analysis--威布尔分布(韦伯分布)可靠性分析

1602803704805666100711081309901023112312561314151617181920212223242526272829303132333435363738394041424344454647484950WeibullAnalysis威布尔分析No.序号Entercyclenumberortimefailed输入失效的周期或寿命Entertheminimumnumberofcyclesorlifeexpected:输入期望的最小周期(寿命):55Enterthepercentageexpected:输入期望合格率:80%ShapeParameter,Beta:Infantlifefailures(0.8),wearingout(1.2),orconstantfailurerate(0.8~1.2)图形参数,Beta.早期失效(0.8),耗损失效(1.2),偶然失效(0.8~1.2)2.25CharacteristicLife,Alpha:Thenumberofcyclesatwhich63.2%oftheproductwillfail63.2%的产品失效时的寿命:87Reliabilityat55cycles70.1%可靠性在55个周期图形参数,Beta为2.25,大于1.2,说明产品是正常耗损失效.Rsquareis0.98,equaltoorgreaterthan0.9,thefitisacceptable.R平方为0.98,等于或大于0.9,拟合可以接受.Theproductwillnotmeetthedesiredreliabilityof80%at55cycles.产品达不到期望的可靠性80%在55周期.TheShapeParameter,Betais2.25,greaterthan1.2,indicatingthattheproductisexperiencingnormalwearoutfailurerate.Conclusions:结论:y=2.2547x-10.07R²=0.9797-3.5-3-2.5-2-1.5-1-0.500.511.50123456ln(ln(1/(1-medianrank)))ln(cycles)WeibullPlotNotes:注释:InWeibullplot,theR-squaredvaluemayhelpyoutocheckifthefitisacceptableornot.IfthevalueofR-squaredcanreach0.9,thatmeansthefitisgood.Otherwise,plsuseanotherwaytodothereliabilityanalysis.在威布尔图中,R平方能帮助你检查拟合性是否可以接受.如果R平方的值能达到0.9,说明拟合性好,否则应当采用其它方法来做可靠性分析.