IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Recent Developments on Reliability, Maintainability and Dependability
Improvement of Reliability Evaluation for 2-Unit Parallel System with Cascading Failures by Using Maximal Copula
Shuhei OTATakao KAGEYAMAMitsuhiro KIMURA
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2015 Volume E98.A Issue 10 Pages 2096-2100


In this study, we investigate whether copula modeling contributes to the improvement of reliability evaluation in a cascading failure-occurrence environment. In particular, as a basic problem, we focus on a 2-unit parallel system whose units may fail dependently each other. As a result, the reliability assessment of the system by using the maximal copula provides more accurate evaluation than the traditional Weibull analysis, if the degree of dependency between two units are high. We show this result by using several simulation studies.

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© 2015 The Institute of Electronics, Information and Communication Engineers
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