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- W2896476828 abstract "Purpose The purpose of this paper is to analyze a parallel system consisting of n dependent components with lifetimes following Weibull distribution. FGM Copula in multivariate case is used to generate the reliability function of the original system. A reduction method is introduced to improve system reliability. Other methods of hot, cold and warm duplication are established to improve system reliability. An application is introduced to show the results and compare between different improvement methods. Design/methodology/approach In this paper, a study of a parallel system consisting of n dependent and non-identical components is introduced. Reliability function of the original system is derived by using the concepts of copula, subject to Weibull distribution. Reliability function of the original system is improved according to reduction, hot duplication, warm and cold duplication methods. Reliability equivalence factors are introduced to compare between different system designs. Numerical illustration and real-time data application are discussed to show the results obtained in this paper. Findings Copulas can be used to model the reliability of systems with dependent units. Originality/value This paper is original. Improvement of the reliability of dependent systems is not discussed in literature. Copula is a useful tool to analyze the reliability of dependent systems. The introduced model is considered as a generalization of the models discussed in literature." @default.
- W2896476828 created "2018-10-26" @default.
- W2896476828 creator A5061944623 @default.
- W2896476828 date "2018-11-29" @default.
- W2896476828 modified "2023-10-16" @default.
- W2896476828 title "Improvement of the reliability of a dependent system under copula" @default.
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- W2896476828 doi "https://doi.org/10.1108/ijqrm-09-2017-0201" @default.
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