期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2019
卷号：2240
页码：292-298
出版社：Newswood and International Association of Engineers
摘要：For the Wiener degradation failure products, the
effects of life test and degradation test on product reliability
evaluation are studied and compared respectively. Firstly, in the
cases of no measurement error, measurement error and
different number of measurement in the degradation test, the
asymptotic variance of the estimated p-percentile of the
product’s lifetime distribution is given, and we research the
influence of measurement error on evaluation accuracy.
Furthermore, under the constraint that the total experimental
cost does not exceed a predetermined budget, we set the
asymptotic variance of the estimated p-percentile of the
product’s lifetime distribution as reliability evaluation accuracy
index. In the same evaluation accuracy, we compare the optimal
design problem in time censored life test with that in
degradation test in different situations. Researches have shown
that compared with the life test, the degradation test has obvious
advantages for improving the accuracy of product reliability
evaluation, which can significantly reduce the sample size and
fully use the advantages of test time. The research in this paper
can provide reference value for the optimization of long-life
product reliability evaluation.
关键词：Wiener process; life test; degradation test;;
Fisher information; optimal design.
