Criticality measures for components with multi-dimensional degradation
Author | Liu, X. |
Author | Al-Khalifa, K.N. |
Author | Elsayed, E.A. |
Author | Coit, D.W. |
Author | Hamouda, A.S. |
Available date | 2016-02-08T14:21:26Z |
Publication Date | 2014 |
Publication Name | IIE Transactions (Institute of Industrial Engineers) |
Resource | Scopus |
Citation | Liu, X., Al-Khalifa, K.N., Elsayed, E.A., Coit, D.W., Hamouda, A.S. "Criticality measures for components with multi-dimensional degradation." (2014) IIE Transactions (Institute of Industrial Engineers), 46 (10), pp. 987-998. |
ISSN | 0740-817X |
Abstract | Failures of engineering structures and equipment are often attributed to the failure of a single component. Hence, it is important to identify critical components in a system and understand how a component's criticality changes over time under dynamic environments. This article investigates the criticality analysis for components with multiple competing failure modes due to degradation. The component degradation is modeled as a k-dimensional Wiener process. A component fails when any of the k degradation processes associated with that component attains a certain threshold level. Motivated by Nelson's cumulative exposure model, a relationship between both the mean and diffusion of the degradation process and environmental conditions is established. Expressions of a component's criticality measures are derived. Numerical examples are presented to illustrate the criticality analysis. |
Sponsor | NPRP 09-774-2-297 from the Qatar National Research Fund. |
Language | en |
Publisher | Taylor and Francis Ltd. |
Subject | Brownian motion Component criticality degradation dynamic environments importance measures |
Type | Article |
Pagination | 987-998 |
Issue Number | 10 |
Volume Number | 46 |
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