Partial accelerated degradation test plans for Wiener degradation processes. Issue 1 (2nd January 2019)

• Record Type: Journal Article
• Authors: Lim, Heonsang; Kim, Yong Soo; Bae, Suk Joo; Sung, Si-Il
• Is Part Of: Quality technology & quantitative management. Volume 16:Issue 1(2019)
• Page Start: 67
• Page End: 81
• Publication Date: 2019-01-02
• Subjects: Asymptotic variance -- compromise plan -- D-optimality -- partially accelerated degradation test -- reliability -- Wiener process; Quality control -- Periodicals; Quality control -- Statistical methods -- Periodicals; Industrial management -- Periodicals; Industrial management; Management -- Research -- Methodology -- Periodicals; Qualitative research -- Periodicals; Management; Quality control; Quality control -- Statistical methods; Periodicals; 658.00721
• DOI: 10.1080/16843703.2017.1368968
• Languages: English
• ISSNs: 1684-3703

Abstract

Abstract: Securing reliability information on newly developed products is difficult, as only a few samples are available in the development stage. In practice, life tests for new products are conducted under both the normal use condition and accelerated stress conditions. In this study, a two-phase partially accelerated degradation test (PADT) is proposed, which is designed to efficiently obtain product lifetime information in the development stage for new products, when reliability-related information is generally limited and there is limited sample availability. In the first phase, a two-stress-level PADT plan is developed to estimate the parameters of an accelerated degradation model based on the D-optimality criterion. In the second phase, a three-stress-level compromise plan is developed such that the asymptotic variance of maximum likelihood estimate of q -th quantile of the lifetime distribution under the use condition is minimized. Finally, the two-phase systematic test plan is illustrated with a numerical example.