期刊
IIE TRANSACTIONS
卷 42, 期 8, 页码 599-612出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/07408170903394371
关键词
Reliability; semi-Markov environment; phase-type distributions
资金
- Air Force Office of Scientific Research [FQ8671-04-0-0359]
- National Science Foundation [CMMI-0856702]
This article presents hybrid, degradation-based reliability models for a single-unit system whose degradation is driven by a semi-Markov environment. The primary objective is to develop a mathematical framework and associated computational techniques that unite environmental data and stochastic failure models to assess the current or future health of the system. By employing phase-type distributions, it is possible to construct a surrogate environment process that is amenable to analysis by exact Markovian techniques to obtain reliability estimates. The viability of the proposed approach and the quality of the approximations are demonstrated in two numerical experiments. The numerical results indicate that remarkably accurate lifetime distribution and moment approximations are attainable.
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