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Bayesian failure-rate modeling and preventive maintenance optimization
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DOI：10.1016/j.ejor.2017.04.019.png)
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Abstract
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New results are derived for the optimal preventive maintenance schedule of a single item over a finite horizon, based on Bayesian models of a failure rate function. Two types of failure rate functions increasing and bathtub shapes are considered. For both cases, optimality conditions and efficient algorithms to find an optimal maintenance schedule are given. A Bayesian parametric model for bathtub shaped failure rate functions is used, while the class of increasing failure rate functions are tackled by an extended gamma process. We illustrate both approaches using real failure time data from the South Texas Project Nuclear Operating Company in Bay City, Texas. (C) 2017 Elsevier B.V. All rights reserved.
Keywords:
Bayesian nonparametrics
Stochastic optimization
Maintenance optimization
Markov chain Monte Carlo
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