Annals of Operations Research, Volume (312), No (1), Year (2020-9) , Pages (259-273)

Title : ( Allocation of redundancies in systems: a general dependency-base framework )

Authors: Hamideh Jeddi , Mahdi Doostparast ,

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Abstract

Manufacturers and consumers prefer reliable products‎, ‎or systems in general‎, ‎since they need to assure that systems work satisfactory for given mission times‎. ‎The redundancy allocation to original system components is a common technique to improve reliabilities‎. ‎But‎, ‎allocation of redundants is not an easy task and must be considered properly with respect to environmental working conditions and possible restrictions such as cost‎, ‎volume and weight‎. ‎Therefore‎, ‎the problem of finding optimal allocations is important and studied extensively in literature‎. ‎The existing studies usually assume restrictive conditions such as stochastically independent component and spare lifetimes‎. ‎This article deals with this problem under a general setting in which component and spare lifetimes can be dependent and heterogeneous‎. ‎Two common policies, ‎called active and standby, ‎are studied in details‎. ‎Stochastic orders are implemented for comparing various allocation policies‎. ‎Findings of this article are derived under general conditions and hold for arbitrary dependency structures among lifetimes‎. ‎Illustrative examples are also given‎.

Keywords

Dependence; Redundancy; Reliability; Stochastic orders
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@article{paperid:1081034,
author = {Jeddi, Hamideh and Doostparast, Mahdi},
title = {Allocation of redundancies in systems: a general dependency-base framework},
journal = {Annals of Operations Research},
year = {2020},
volume = {312},
number = {1},
month = {September},
issn = {0254-5330},
pages = {259--273},
numpages = {14},
keywords = {Dependence; Redundancy; Reliability; Stochastic orders},
}

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%0 Journal Article
%T Allocation of redundancies in systems: a general dependency-base framework
%A Jeddi, Hamideh
%A Doostparast, Mahdi
%J Annals of Operations Research
%@ 0254-5330
%D 2020

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