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Sequential imperfect preventive maintenance models with two categories of failure modes
Author(s) -
Lin Daming,
Zuo Ming J.,
Yam Richard C. M.
Publication year - 2001
Publication title -
naval research logistics (nrl)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.665
H-Index - 68
eISSN - 1520-6750
pISSN - 0894-069X
DOI - 10.1002/1520-6750(200103)48:2<172::aid-nav5>3.0.co;2-5
Subject(s) - failure rate , weibull distribution , preventive maintenance , hazard , reliability engineering , function (biology) , imperfect , failure mode and effects analysis , sequence (biology) , computer science , operations research , mathematics , statistics , engineering , linguistics , philosophy , chemistry , genetics , organic chemistry , evolutionary biology , biology
Abstract In this paper, we introduce the concept of two categories of failure modes: maintainable failure modes and nonmaintainable failure modes into the modeling of preventive maintenance (PM) activities. The hybrid model proposed by Lin et al. is used to model the effect of a PM activity on the failure rate function of maintainable failure modes. However, PM does not change the hazard rate function of nonmaintainable failure modes. PM is performed at a sequence of intervals. The objective is to determine the optimal PM schedules to minimize the mean cost rate. Numerical examples for Weibull hazard rates are given. © 2001 John Wiley & Sons, Inc. Naval Research Logistics 48: 172–183, 2001