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Representations of component importance for coherent systems with exchangeable components

Part of: Distribution theory - Probability Special processes Survival analysis and censored data

Published online by Cambridge University Press:  16 July 2020

S. Pitzen  and
M. Burkschat
S. Pitzen*
Affiliation:
RWTH Aachen University
M. Burkschat*
Affiliation:
RWTH Aachen University
*
*Postal address: Institute of Statistics, RWTH Aachen University, D-52056 Aachen, Germany.
*Postal address: Institute of Statistics, RWTH Aachen University, D-52056 Aachen, Germany.
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Abstract

Two definitions of Birnbaum’s importance measure for coherent systems are studied in the case of exchangeable components. Representations of these measures in terms of distribution functions of the ordered component lifetimes are given. As an example, coherent systems with failure-dependent component lifetimes based on the notion of sequential order statistics are considered. Furthermore, it is shown that the two measures are ordered in the case of associated component lifetimes. Finally, the limiting behavior of the measures with respect to time is examined.

Keywords

coherent systemexchangeabilitycomponent importancesignatureorder statisticssequential order statisticsassociation

MSC classification

Primary: 62N05: Reliability and life testing
Secondary: 60E15: Inequalities; stochastic orderings 60K10: Applications (reliability, demand theory, etc.)
Type
Research Papers
Information
Journal of Applied Probability , Volume 57 , Issue 2 , June 2020 , pp. 385 - 406
Copyright
© Applied Probability Trust 2020

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