Planning two or more level constant-stress accelerated life tests with competing risks

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Title:	Planning two or more level constant-stress accelerated life tests with competing risks
Authors:	Wu, Shuo-Jye;Huang, Syuan-Rong
Keywords:	A-optimality;D-optimality;Exponential distribution;Maximum likelihood estimation;Multiple failure modes;Variance-optimality
Date:	2017-02
Issue Date:	2017-03-04 02:11:15 (UTC+8)
Publisher:	Elsevier Ltd
Abstract:	In this article, we investigate the optimization problem when the competing risks data come from a progressive type II censoring in an accelerated life test with multiple levels of constant stress. The failure times of the individual causes are assumed to be independent and exponentially distributed with different parameters. We propose three criteria related to the Fisher's information matrix to determine the optimal stress level as well as the optimal sample allocation at each stress level. A real data set is studied to illustrate the application of the proposed criteria.
Relation:	Reliability Engineering and System Safety 158, pp.1-8
DOI:	10.1016/j.ress.2016.09.007
Appears in Collections:	[Graduate Institute & Department of Statistics] Journal Article

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