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Reliability analysis of phased mission systems when components can be swapped upon failure.

Coolen, F.P.A. and Huang, X. and Najem, A. (2020) 'Reliability analysis of phased mission systems when components can be swapped upon failure.', ASCE-ASME journal of risk and uncertainty in engineering systems part B : mechanical engineering, 6 (2). 020905.

Abstract

This paper proposes a new strategy to improve the reliability of phased mission systems (PMS), namely, by swapping of components. In the proposed strategy, when a component fails, it can be swapped by another one in the system which is still functioning. We consider both the options to swap components at any time and for swaps to be possible only at phase transitions. This paper also discusses the strategy of swapping components according to structure importance. The structure importance is used to measure the importance level of the components in contributing to system reliability. Then, when a component with high importance fails, it is swapped by another component with lower importance from the system which has not yet failed. The survival signature methodology is implemented to assess the reliability of PMS when there is a possibility of components swapping. In addition, we consider the cost effectiveness of component swapping through two models (time independent and time dependent) of penalty costs for PMS.

Item Type:Article
Full text:Publisher-imposed embargo
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1115/1.4046328
Publisher statement:ASME ©; CC-BY distribution license.
Date accepted:29 December 2019
Date deposited:07 January 2020
Date of first online publication:27 March 2020
Date first made open access:27 March 2021

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