Optimum block replacement policy over a random time horizon |
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| Authors: | Abdelhakim Khatab Nidhal Rezg Daoud Ait-Kadi |
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| Affiliation: | 1.Laboratory of Industrial Engineering and Production of Metz (LGIPM),Ecole Nationale d’Ingénieurs de Metz,Metz,France;2.Laboratory of Industrial Engineering and Production of Metz (LGIPM),Université Paul-Verlaine,Metz,France;3.Mechanical Engineering Department, Faculty of Science and Engineering, Interuniversity Research Center on Entreprise Networks, Logistics and Transportation (CIRRELT),Université Laval,Quebec,Canada |
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| Abstract: | In this paper we consider the block replacement policy (BRP) for a system operating over a random time horizon. Under such
a policy, a system is replaced by a new one either at failure or at a given time interval. The optimality criterion is the
expected total replacements cost. Conditions under which an optimal replacement period exits are given. It is shown that BRP
over an infinite time horizon is obtained as a particular case of the present work. A numerical example is given to illustrate
the proposed replacement model. |
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