Publication: A study on multi-level redundancy allocation in coherent systems formed by modules
Authors
Torrado, N. ; Arriaza, A. ; Navarro, J.
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Publisher
Elsevier
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DOI
https://doi.org/10.1016/j.ress.2021.107694
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info:eu-repo/semantics/article
Description
© 2021. Elsevier
This document is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
This document is the accepted version of a published work that appeared in final form in Reliability Engineering & System Safety
Abstract
The present work studies the effect of redundancies on the reliability of coherent systems formed by modules.
Different redundancies at components’ level versus redundancies at modules’ level are investigated, including
active and standby redundancies. For that, a new model is presented. This model takes into account the
dependence among the components, as well as, the dependence among the modules of the system. In both
cases, the dependence structure is modeled by copula functions. Several results are provided to compare
systems consisting of heterogeneous components. The comparisons are distribution-free with respect to the
components. In particular, we consider the cases when the components in the modules are independent and
connected (or not) in series, and when the components are dependent within the modules. In both cases, it is
assumed that the modules can be dependent. Furthermore, the case in which the components in each module
are identically distributed (dependent or independent) is also considered. We illustrate the theoretical results
with several examples.
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Citation
Reliability Engineering and System Safety 213, 107694.
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