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Environmental stress screening modelling, analysis and optimization

Title
Environmental stress screening modelling, analysis and optimization
Authors
Cha, Ji HwanFinkelstein, Maxim
Ewha Authors
차지환
SCOPUS Author ID
차지환scopus
Issue Date
2015
Journal Title
RELIABILITY ENGINEERING & SYSTEM SAFETY
ISSN
0951-8320JCR Link1879-0836JCR Link
Citation
vol. 139, pp. 149 - 155
Keywords
Environmental stress screeningShock modelWear modelSeverity of stressFailure mode
Publisher
ELSEVIER SCI LTD
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
Environmental stress screening (ESS) is widely used in industry to eliminate early or latent failures. However, the appropriate stochastic modeling for ESS has not been yet suggested in the literature. In this paper, we develop the corresponding stochastic model and analyze the effect of the ESS in terms of population characteristics. In our model, during the ESS, the manufactured items are exposed to a stress with the relatively large magnitude, which can result either in immediate failures of items or in the increased susceptibility to future failures. The corresponding optimization problems for obtaining the optimal level of the stress magnitude are also formulated and discussed. An illustrative example is considered. (C) 2015 Elsevier Ltd. All rights reserved.
DOI
10.1016/j.ress.2015.03.003
Appears in Collections:
자연과학대학 > 통계학전공 > Journal papers
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