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The failure probability of components in three-state networks with applications to age replacement policy

Part of: Operations research and management science Special processes

Published online by Cambridge University Press:  30 November 2017

S. Ashrafi  and
M. Asadi
S. Ashrafi*
Affiliation:
University of Isfahan
M. Asadi*
Affiliation:
University of Isfahan and Institute of Research in Fundamental Sciences
*
* Postal address: Department of Statistics, University of Isfahan, Isfahan, 81744, Iran.
* Postal address: Department of Statistics, University of Isfahan, Isfahan, 81744, Iran.
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Abstract

In this paper we investigate the stochastic properties of the number of failed components of a three-state network. We consider a network made up of n components which is designed for a specific purpose according to the performance of its components. The network starts operating at time t = 0 and it is assumed that, at any time t > 0, it can be in one of states up, partial performance, or down. We further suppose that the state of the network is inspected at two time instants t1 and t2 (t1 < t2). Using the notion of the two-dimensional signature, the probability of the number of failed components of the network is calculated, at t1 and t2, under several scenarios about the states of the network. Stochastic and ageing properties of the proposed failure probabilities are studied under different conditions. We present some optimal age replacement policies to show applications of the proposed criteria. Several illustrative examples are also provided.

Keywords

Signature matrixmulti-state systembivariate increasing failure ratetotally positive of order twostochastic order

MSC classification

Primary: 60K10: Applications (reliability, demand theory, etc.)
Secondary: 90B25: Reliability, availability, maintenance, inspection
Type
Research Papers
Information
Journal of Applied Probability , Volume 54 , Issue 4 , December 2017 , pp. 1051 - 1070
Copyright
Copyright © Applied Probability Trust 2017 

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