恒应力加速寿命试验中无失效数据的处理  

Zero-failure data process of constant stress accelerated life testing

作　　者：严拴航[1] 师义民[1] 

机构地区：[1]西北工业大学应用数学系,陕西西安710072

出　　处：《纯粹数学与应用数学》2006年第2期145-148,197,共5页Pure and Applied Mathematics

基　　金：国家自然科学基金资助项目(No.70471057);陕西省教育厅自然科学基金资助项目(No.03JK065)

摘　　要：对恒应力加速寿命试验中W eibu ll分布无失效数据,合理地构造了失效概率的两种先验分布,并结合现场试验数据,利用极大似然方法和Bayes方法对该组无失效数据进行了处理,所得结果表明本文给出的方法是正确可行的.Upon the condition of constant stress accelerated life testing, zero-failure data with the Weibull distribution is studied. Firstly, the prior distribution about the failure probability P is developed reasonably. Meanwhile, the zero-failure data is processed by the Maximum Likelihood method and the Bayes approach, the result shows that the proposed method is right and feasible.

关 键 词：恒应力加速寿命试验 先验分布 BAYES方法 后验分布 

分 类 号：O213.2[理学—概率论与数理统计]