摘要
为了对不同环境下的试验数据进行折算与综合，本文在失效机理不变的前提下，详细讨论了Ｇａｍｍａ分布环境因子的定义；给出了判别两种环境下产品失效机理是否发生了明显变化的统计检验方法；并推导了Ｇａｍｍａ分布环境因子的极大似然估计（ＭＬＥ）及经典的、Ｆｉｄｕｃｉａｌ与Ｂａｙｅｓｉａｎ区间估计。最后以数值举例说明了定义和各种统计推断方法的适用性。
This paper discusses the definitions of the environmental factors for Gamma distribu- tion under a prerequisite of constant failure mechanism for the purpose of converting and synthesiz- ing some test data obtained in different environments.The paper also proposes a method of statisti- cal test to discriminate if the failure mechanism of a product takes a distinct transformation in two different environments The MLE and the classical.Fiducial and Bavesian confidence intervals of environmental factors of the Gamma distribution are derived.These methods are illustrated by nu- merical examples and the results have approved the suitability of the definition and methods.
出处
《系统工程与电子技术》
EI
CSCD
1995年第12期61-71,共11页
Systems Engineering and Electronics
关键词
可靠性工程
环境因子
失效机理
GAMMA分布
Gamma distribution,Environmental factor.MLE,Failure mechanism,Interval es- timation.
