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Some results on active redundancy at component level versus system level
A.K. Nanda,
Published in
Volume: 41
Issue: 3
Pages: 241 - 245
Optimum lifetime of a series system with active spares always depends on the allocation of spares at component /system level. We prove that under some sufficient conditions, component redundancy offers greater reliability than the system redundancy in likelihood ratio ordering for n-component matching spares. We also show that this principle holds under some sufficient conditions in likelihood ratio ordering for 2-component non-matching spares of iid components and iid spares. Further, we give some sufficient conditions under which reversed hazard rate order does not exist between two 2-component systems of matching spares. © 2013 Elsevier B.V. All rights reserved.
About the journal
JournalOperations Research Letters