On allocating one active redundancy to coherent systems with dependent and heterogeneous components' lifetimes

Rui Fang and Xiaohu Li

Naval Research Logistics (NRL), 2016, vol. 63, issue 4, 335-345

Abstract: This article studies coherent systems of heterogenous and statistically dependent components' lifetimes. We present a sufficient and necessary condition for a stochastically longer system lifetime resulted by allocating a single active redundancy. For exchangeable components' lifetimes, allocating the redundancy to the component with more minimal path sets is proved to produce a more reliable system, and for systems with stochastic arrangement increasing components' lifetimes and symmetric structure with respect to two components, allocating the redundancy to the weaker one brings forth a larger reliability. Several numerical examples are presented to illustrate the theoretical results as well. © 2016 Wiley Periodicals, Inc. Naval Research Logistics 63: 335–345, 2016

Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:wly:navres:v:63:y:2016:i:4:p:335-345

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