By Hongzhou Wang
ISBN-10: 1846283248
ISBN-13: 9781846283246
ISBN-10: 1846283256
ISBN-13: 9781846283253
For a few structures, corresponding to plane, submarines, army platforms and aerospace structures, this can be very vital to prevent failure in the course of real operation since it is harmful and disastrous. The learn of varied upkeep rules and versions that allows you to increase procedure reliability, to avoid the prevalence of method failure, and to minimize upkeep expenses is a vital region in reliability engineering. right upkeep strategies were emphasised in recent times as a result elevated defense and reliability specifications of platforms, and the elevated complexity and emerging expenses of fabric and labor.
Based at the authors’ study, Reliability and optimum upkeep provides the most recent theories and techniques of reliability and upkeep with an emphasis on multi-component platforms, whereas additionally contemplating the present sizzling issues in reliability and upkeep together with: imperfect fix, fiscal dependence and opportunistic upkeep, and correlated failure and service. software program reliability and upkeep expense, and guaranty price concerns also are considered.
Postgraduates, researchers, and practitioners in reliability engineering, upkeep engineering, operations learn, business engineering, mechanical engineering, logistics, administration, and information will locate this e-book a cutting-edge survey of reliability and upkeep thought and types.
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Extra info for Reliability and Optimal Maintenance
Sample text
Yun and Bai (1987) propose a repair cost limit policy in which when a unit fails, the repair cost is estimated and repair is undertaken if the estimated cost is less than a predetermined limit L, where the repair is imperfect. Otherwise, the unit is replaced. This policy by Yun and Bai (1987) is generalized from the one by Hastings (1967). In addition, Kapur et al. (1989) extend the repair cost limit policy to incorporate the number of repairs as a policy decision variable. 4. Summary of repair limit policies Reference Hastings (1969) Kapur et al.
Between two adjacent PMs, a CM is carried out immediately on failure. Both PM and CM are imperfect. W n is dependent on n and determined through minimizing the maintenance cost rate. 5. 5. Sequential PM policy Optimality criterion Modeling tool Planning horizon Cost rate Renewal theory Infinite Cost rate Renewal theory Infinite Shock model Cost rate Renewal theory Infinite Minimal Reduction (age and failure rate) Cost rate Renewal theory Infinite Imperfect ( D , E ) rule Cost rate Renewal theory Infinite Study PM CM Nakagawa (1986) Imperfect Nakagawa (1987) Imperfect Kijima and Nakagawa (1992) Imperfect Minimal Monga et al.
Summary of periodic PM policies Maintenance policy Typical reference PM time points Decision variables Block replacement Barlow and Periodic time Hunter (1960) Periodic time Periodic replacement with minimal repair Barlow and Periodic time Hunter (1960) Periodic time Special cases Liu et al. (1995) Periodic time and its multiples Fixed number of PMs / Periodic time Periodic replacement with minimal repair ( T0 , T ) Policy I Nakagawa (1981) Periodic time Periodic time/ reference time Periodic replacement with minimal repair ( T0 , T * ) Policy II Nakagawa (1981) Periodic time Periodic time/ reference time Periodic replacement with minimal repair ( T0 , T * ) Policy III Nakagawa (1981) Periodic time Periodic time/ reference time Periodic replacement with minimal repair/ Block replacement ( n, T ) Nakagawa (1986) Periodic time Periodic time /number of failures Periodic replacement with minimal repair ( r, T ) Tango (1978) Periodic time Periodic time/ reference age Block replacement (N, T) Wang and Pham (1999) (G , T ) Cox (1962) Overhaul and Minimal repair * (t 0 , T ) Periodic time Block replacement/ Periodic time and its Periodic replacement /number of repairs multiples with minimal repair Periodic time Periodic time/ reference age Block replacement/ No failure repair Berg and Periodic time Epstein (1976) Periodic time/ reference age Block replacement repair at failure” policy.
Reliability and Optimal Maintenance by Hongzhou Wang
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