Birnbaum-Saunders分布环境因子的置信限

环境因子在不同环境下试验数据的折算与综合问题中有着重要应用。在失效机理保持不变的条件下,讨论Birnbaum-Saunders疲劳寿命分布环境因子的估计问题。设产品在环境1、环境2下的某指标分别为X、Y,定义环境因子K EX EY,给出了X、Y的分布均服从Birnbaum-Saunders疲劳寿命分布时K的置信限。

Confidence limits for the environment factor of the Birnbaum-Saunders distribution

Environmental factors are essential to be applied to convert and synthesize some test data. Under the condition of constant failure mechanism, the estimation of the environmental factors is discussed. Let X denote the index of product in environment 1, Y denote the one in environment 2, and environmental factors are defined as K = EX/EY. In this paper, the confidence limits for the environment factors are given when the distributions of Xand Yare all Birnbaum-Saunders fatigue life distribution.