Summary
Two imperfect preventive maintenance (pm) models where (i) the age of the unit becomes x units of time younger at pm and (ii) the age t or the failure rate r(t) reduces to at or ar(t) at pm have been well-known. This chapter applies the notion (ii) of imperfectness to a sequential policy where the pm is done at sequential intervals. The expected costs of two models and optimal intervals are analytically derived. Further, we also apply this notion to a cumulative damage model where the total damage Y k reduces to a k Y k at the k-th pm. The expected cost is obtained, and optimal policies which minimize it are discussed. To make it possible to understand these results easily and correctly, some numerical examples of each model are given.
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© 2002 Springer-Verlag Berlin Heidelberg
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Nakagawa, T. (2002). Imperfect Preventive Maintenance Models. In: Osaki, S. (eds) Stochastic Models in Reliability and Maintenance. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-24808-8_5
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DOI: https://doi.org/10.1007/978-3-540-24808-8_5
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-07725-8
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