Weibull分布下双应力交叉步加试验的可靠性分析  

ANALYSIS OF RELIABILITY PERFORMANCES ON TWO ALTERNATIVE STEP-STRESS ACCELERATED LIFE TEST FOR WEIBULL DISTRIBUTION

作　　者：孙天宇[1] 师义民[1] 谢奇[2] 

机构地区：[1]西北工业大学理学院,西安710072 [2]宝鸡文理学院,宝鸡721013

出　　处：《机械强度》2013年第3期253-257,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金委资助项目(71171164);西北工业大学创业种子基金(Z2013153)~~

摘　　要：在双应力交叉步进加速寿命试验场合下,研究Weibull部件可靠性指标的估计问题.利用贝叶斯方法,在平方损失和广义熵损失函数下分别给出部件参数及可靠性指标的贝叶斯估计。最后,利用计算机仿真对各估计结果进行模拟分析。Reliability performance for Weibu11 distribution was studied under the two alternative step-stress accelerated life test. The reliability indexes were derived under squared error and general entropy loss function according to Bayesian estimation with assumption that both of parameters are unknown. And then, the estimations are illustrated by means of simulation analysis.

关 键 词：交叉应力步进加速试验 WEIBULL分布 损失函数 Bayes可靠性分析 

分 类 号：O213.2[理学—概率论与数理统计]