文章基本信息

标题：Comparison of the Effectiveness of Degradation Test and Life Test Based on Wiener Degradation Failure Product
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作者：Xinyu Ma ; Guang Jin
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.