A new model for reliability optimization of series-parallel systems with non-homogeneous components

Mohammad Feizabadi and Abdolhamid Eshraghniaye Jahromi

Reliability Engineering and System Safety, 2017, vol. 157, issue C, 101-112

Abstract: In discussions related to reliability optimization using redundancy allocation, one of the structures that has attracted the attention of many researchers, is series-parallel structure. In models previously presented for reliability optimization of series-parallel systems, there is a restricting assumption based on which all components of a subsystem must be homogeneous. This constraint limits system designers in selecting components and prevents achieving higher levels of reliability. In this paper, a new model is proposed for reliability optimization of series-parallel systems, which makes possible the use of non-homogeneous components in each subsystem. As a result of this flexibility, the process of supplying system components will be easier. To solve the proposed model, since the redundancy allocation problem (RAP) belongs to the NP-hard class of optimization problems, a genetic algorithm (GA) is developed. The computational results of the designed GA are indicative of high performance of the proposed model in increasing system reliability and decreasing costs.

Keywords: Reliability optimization; Redundancy allocation problem; Series-parallel systems; Non-homogeneous components; Genetic algorithm (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (23)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:157:y:2017:i:c:p:101-112

DOI: 10.1016/j.ress.2016.08.023

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