Redundancy allocation at component level versus system level

Zhao, Peng; Zhang, Yiying; Li, Long

doi:10.1016/j.ejor.2014.08.040

Cited by 34 publications

(16 citation statements)

References 26 publications

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“…Unfortunately, the answer is negative even for the independent case. Interested readers are referred to Example 1 of and Example 4.1 of for more details.…”

Section: Resultsmentioning

confidence: 99%

Component and system active redundancies for coherent systems with dependent components

Zhang

Amini-Seresht

Ding

2017

Appl Stoch Models Bus & Ind

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The prevailing engineering principle that redundancy at the component level is superior to redundancy at the system level is generalized to coherent systems with dependent components. Sufficient (and necessary) conditions are presented to compare component and system redundancies by means of the usual stochastic, hazard rate, reversed hazard rate, and likelihood ratio orderings. Explicit numerical examples are provided to illustrate the theoretical findings. Some related results in the literature are generalized and extended.

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“…Unfortunately, the answer is negative even for the independent case. Interested readers are referred to Example 1 of and Example 4.1 of for more details.…”

Section: Resultsmentioning

confidence: 99%

Component and system active redundancies for coherent systems with dependent components

Zhang

Amini-Seresht

Ding

2017

Appl Stoch Models Bus & Ind

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“…Barlow and Proschan [4] showed that the allocation of active redundancy at the component level (of a coherent system) is superior to that at the system level with respect to the usual stochastic order. Later, many other researchers studied this problem in different directions (see [8], [11], [21], [38], [40], [56], [57], and the references therein). However, to the best of our knowledge, this problem using ageing faster orders has not yet been studied.…”

Section: Introductionmentioning

confidence: 99%

On relative ageing of coherent systems with dependent identically distributed components

Hazra

Misra

2020

Adv. Appl. Probab.

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Relative ageing describes how one system ages with respect to another. The ageing faster orders are used to compare the relative ageing of two systems. Here, we study ageing faster orders in the hazard and reversed hazard rates. We provide some sufficient conditions for one coherent system to dominate another with respect to ageing faster orders. Further, we investigate whether the active redundancy at the component level is more effective than that at the system level with respect to ageing faster orders, for a coherent system. Furthermore, a used coherent system and a coherent system made out of used components are compared with respect to ageing faster orders.

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“…The general problem of where to allocate an active or standby redundant component has been studied along the 90's, as can be seen in related works . More recently, additional results have been provided by other works …”

Section: Introductionmentioning

confidence: 99%

Allocation of a relevation in redundancy problems

Belzunce

Martínez-Riquelme

Ruiz

2018

Appl Stoch Models Bus & Ind

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The relevation can be considered as a replacement or repair policy in reliability, in which, when a unit fails, the unit is restored to a working condition just previous to the failure, in the sense that the age of the unit is not changed but the failure rate changes. It can be also considered as a generalization of the minimal repair policy and the load-sharing model. In this paper, we consider the problem of where to allocate a relevation in a system to increase the reliability of the system and the particular cases of load-sharing and minimal repair policies.

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Redundancy allocation at component level versus system level

Cited by 34 publications

References 26 publications

Component and system active redundancies for coherent systems with dependent components

Component and system active redundancies for coherent systems with dependent components

On relative ageing of coherent systems with dependent identically distributed components

Allocation of a relevation in redundancy problems

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