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Reliability sensitivity analysis of coherent systems based on survival signature

Huang, X.; Coolen, F.P.A.

Reliability sensitivity analysis of coherent systems based on survival signature Thumbnail


Authors

X. Huang



Abstract

The reliability sensitivity can be used to rank distribution parameters of system components concerning their impacts on the system’s reliability. Such information is essential to purposes such as component prioritization, reliability improvement, and risk reduction of a system. In this article, we present an efficient method for reliability sensitivity analysis of coherent systems using survival signature. The survival signature is applied to calculate the reliability of coherent systems. The reliability importance of components is derived analytically to evaluate the relative importance of the component with respect to the overall reliability of the system. The closed-form formula for the reliability sensitivity of the system with respect to component’s distribution parameters is derived from the derivative of lifetime distribution of a component to further investigate the impacts of the distribution parameters on the system’s reliability. The effectiveness and feasibility of the proposed approaches are demonstrated with two numerical examples.

Citation

Huang, X., & Coolen, F. (2018). Reliability sensitivity analysis of coherent systems based on survival signature. Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 232(6), 627-634. https://doi.org/10.1177/1748006x18754974

Journal Article Type Article
Acceptance Date Dec 20, 2017
Online Publication Date Feb 16, 2018
Publication Date Dec 1, 2018
Deposit Date Jan 4, 2018
Publicly Available Date Jan 5, 2018
Journal Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability
Print ISSN 1748-006X
Electronic ISSN 1748-0078
Publisher SAGE Publications
Peer Reviewed Peer Reviewed
Volume 232
Issue 6
Pages 627-634
DOI https://doi.org/10.1177/1748006x18754974

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Copyright Statement
Huang, X. & Coolen, F.P.A. (2018), Reliability sensitivity analysis of coherent systems based on survival signature, Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability 232(6): 627-634. Copyright © IMechE 2018. Reprinted by permission of SAGE Publications






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