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Optimizing bi-objective redundancy allocation problem with a mixed redundancy strategy
ISA Transactions, 2015Redundancy Allocation Problem (RAP) is a challenging subject which has attracted the attention of many authors. Generally, in the RAP there are two strategies for using the redundant components: active and standby. In this paper a new redundancy strategy, called mixed redundancy, is introduced and considered in a multi-objective optimization RAP ...
Mostafa Abouei Ardakan +2 more
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Reliability–redundancy allocation problem with cold-standby redundancy strategy
Simulation Modelling Practice and Theory, 2014Abstract This paper considers the mixed-integer non-linear optimization of reliability–redundancy allocation problem (RRAP) to determine simultaneous reliability and redundancy level of components. In the RRAP, it is necessary to create a trade-off between component reliabilities and the number of redundant components with the aim of maximizing ...
Mostafa Abouei Ardakan +1 more
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Reliability Engineering & System Safety, 2017
Abstract To maximize the reliability of a system, the traditional reliability–redundancy allocation problem (RRAP) determines the component reliability and level of redundancy for each subsystem. This paper proposes an advanced RRAP that also considers the optimal redundancy strategy, either active or cold standby.
Heungseob Kim, Pansoo Kim
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Abstract To maximize the reliability of a system, the traditional reliability–redundancy allocation problem (RRAP) determines the component reliability and level of redundancy for each subsystem. This paper proposes an advanced RRAP that also considers the optimal redundancy strategy, either active or cold standby.
Heungseob Kim, Pansoo Kim
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Allocation of a relevation in redundancy problems
Applied Stochastic Models in Business and Industry, 2018The relevation can be considered as a replacement or repair policy in reliability, in which, when a unit fails, the unit is restored to a working condition just previous to the failure, in the sense that the age of the unit is not changed but the failure rate changes.
Belzunce, Félix +2 more
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Fuzzy multi-objective reliability-redundancy allocation problem
2014 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE), 2014Reliability is the measure of the result of the quality of the system over a long run. The reliability-redundancy allocation problem (RRAP) aims to ensure high systems reliability in the presence of optimally redundant systems components. This is one of the most important design considerations for the systems designers.
Zubair Ashraf +3 more
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Simplifying the solution of redundancy allocation problems
Annual Reliability and Maintainability. Symposium. 1999 Proceedings (Cat. No.99CH36283), 1999Redundancy allocation is a useful technique in designing systems that have high levels of reliability while satisfying limitations on cost, weight, volume, etc. Performing redundancy allocation typically involves formulating and solving an appropriate mathematical programming problem.
W.F. Rice, C.R. Cassady, T.R. Wise
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Fuzzy Random Redundancy Allocation Problems
2010Due to subjective judgement, imprecise human knowledge and perception in capturing statistical data, the real data of lifetimes in many systems are both random and fuzzy in nature. Based on the fuzzy random variables that are used to characterize the lifetimes, this paper studies the redundancy allocation problems to a fuzzy random parallel-series ...
Shuming Wang, Junzo Watada
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A bat algorithm for the redundancy allocation problem
Engineering Optimization, 2015This article uses a recently developed bat algorithm (BA) meta-heuristic optimization method to solve the reliability redundancy allocation problem (RAP). The RAP is a well-known NP-hard problem which has been the subject of much prior work, generally of a restricted form where each component must consist of identical components in parallel to make ...
T.P. Talafuse, E.A. Pohl
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