Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6897153 | European Journal of Operational Research | 2015 | 13 Pages |
Abstract
Consider a general coherent system with independent or dependent components, and assume that the components are randomly chosen from two different stocks, with the components of the first stock having better reliability than the others. Then here we provide sufficient conditions on the component's lifetimes and on the random numbers of components chosen from the two stocks in order to improve the reliability of the whole system according to different stochastic orders. We also discuss several examples in which such conditions are satisfied and an application to the study of the optimal random allocation of components in series and parallel systems. As a novelty, our study includes the case of coherent systems with dependent components by using basic mathematical tools (and copula theory).
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science (General)
Authors
Jorge Navarro, Franco Pellerey, Antonio Di Crescenzo,