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

Feizabadi, M ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ress.2016.08.023
  3. Publisher: Elsevier Ltd , 2017
  4. Abstract:
  5. 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. © 2016 Elsevier Ltd
  6. Keywords:
  7. Genetic algorithm ; Non-homogeneous components ; Redundancy allocation problem ; Reliability optimization ; Series-parallel systems ; Genetic algorithms ; Redundancy ; Reliability ; Computational results ; Non-homogeneous ; Redundancy allocation ; Redundancy allocation problem (RAP) ; Series-parallel structure ; Series-parallel system ; Optimization
  8. Source: Reliability Engineering and System Safety ; Volume 157 , 2017 , Pages 101-112 ; 09518320 (ISSN)
  9. URL: https://www.sciencedirect.com/science/article/pii/S0951832016304288