Reliability and importance analysis of uncertain system with common cause failures based on survival signature



Mi, Jinhua, Beer, Michael ORCID: 0000-0002-0611-0345, Li, Yan-Feng, Broggi, Matteo and Cheng, Yuhua
(2020) Reliability and importance analysis of uncertain system with common cause failures based on survival signature. RELIABILITY ENGINEERING & SYSTEM SAFETY, 201. p. 106988.

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Abstract

Redundant design has become the commonly used technique for ensuring the reliability of complex systems, which calls for great concern to common cause failure problems in such systems. Incomplete data in combination with vague judgments from experts introduce imprecision and epistemic uncertainties in the performance characterization of components. These issues need to be taken into account for assessing the system reliability. In this paper, a comprehensive reliability assessment method is presented by adopting the concept of survival signature to estimate the reliability of complex systems with multiple types of components. Particular attention is devoted to common cause failures (CCFs), which are modeled and quantified by decomposed partial α-decomposition method. Uncertainties caused by incomplete data for CCF events are reduced by hierarchical Bayesian inference. The component importance measure is enhanced to assess the importance of various possible CCF scenarios and to identify their potential impact on system reliability. The presented method is used to analyze the reliability of a dual-axis pointing mechanism for communication satellite, which is a commonly used satellite antenna control mechanism. The engineering application demonstrates the effectiveness of the method.

Item Type: Article
Uncontrolled Keywords: Reliability analysis, Survival signature, Common cause failure, Hierarchical Bayesian inference, Epistemic uncertainty, Dual-axis pointing mechanism
Depositing User: Symplectic Admin
Date Deposited: 09 Jun 2020 07:54
Last Modified: 18 Jan 2023 23:49
DOI: 10.1016/j.ress.2020.106988
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3089832