淡江大學機構典藏:Item 987654321/69219
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    Title: Optimal maintenance time for imperfect maintenance actions on repairable product
    Authors: Tsai, Tzong-Ru;Liu, Pang-Hsu;Lio, Y.L.
    Contributors: 淡江大學統計學系
    Keywords: Maximum likelihood estimate;Minimal repair;Nonhomogeneous Poisson process;Power law process;Preventive maintenance;Truncated sampling
    Date: 2011-05
    Issue Date: 2011-10-23 16:38:27 (UTC+8)
    Publisher: Kidlington: Pergamon
    Abstract: This paper develops a maintenance strategy for repairable products that combines imperfect maintenance actions at pre-scheduled times and minimal repair actions for failures. Under a power law process of failures, an expected total cost is developed that involves the sum of the total cost of imperfect preventive maintenances and the expected total cost of minimal repairs. Moreover, a searching procedure is provided to determine the optimal maintenance schedule within a finite time span of warranty. When the parameters of the power law process are unknown, the accuracy of the estimated maintenance schedule is evaluated based on data through an asymptotic upper bound for the difference of the true expected total cost and its estimate. The proposed method is applied to an example regarding the maintenance of power transformers and the performance of the proposed method is investigated through a numerical study. Numerical results show that the proposed maintenance strategy could save cost whether an imperfect maintenance action or the perfect maintenance action is implemented.
    Relation: Computers & Industrial Engineering 60(4), pp.744–749
    DOI: 10.1016/j.cie.2011.01.008
    Appears in Collections:[Graduate Institute & Department of Statistics] Journal Article

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