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Title: Sequential inspection strategy for multiple systems under availability requirement
Authors: Cui, L.R. 
Loh, H.T. 
Xie, M. 
Keywords: Availability
Sequential inspection
Issue Date: 16-May-2004
Citation: Cui, L.R., Loh, H.T., Xie, M. (2004-05-16). Sequential inspection strategy for multiple systems under availability requirement. European Journal of Operational Research 155 (1) : 170-177. ScholarBank@NUS Repository.
Abstract: System failures are usually observed during regular maintenance or inspection and this is especially the case for systems in standby or storage, which is common for safety critical systems. A periodic inspection policy is usually adopted. However, during the inspection, a lot of information is gained about the status of the system. Such information should be used in deciding upon the time for the next inspection. Hence sequential inspection is more appropriate, especially when the aging property of the system is unknown, and has to be estimated with the information from inspection. In this paper, a model is developed and sequential inspection strategies are studied in this situation. The focus is on the case when there are multiple systems inspected at the same, but discrete times. We also do not assume a known distribution of the system life time, and the estimation of that is incorporated into the analysis and decision making. Different availability criteria are considered and numerical examples are provided to illustrate the procedure. © 2003 Elsevier B.V. All rights reserved.
Source Title: European Journal of Operational Research
ISSN: 03772217
DOI: 10.1016/S0377-2217(02)00822-6
Appears in Collections:Staff Publications

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