DISCRETE MAINTENANCE MODELS OF ARMOUR BLOCK FACILITY UNDER PEAKS-OVER-THRESHOLD

Autor: Takao Ota, Yoshiharu Matsumi, Takashi Satow
Rok vydání: 2011
Předmět:
Zdroj: International Journal of Reliability, Quality and Safety Engineering. 18:483-494
ISSN: 1793-6446
0218-5393
DOI: 10.1142/s0218539311004202
Popis: It applies some results of discrete maintenance models to an armour block facility. The armour block facility is subject to waves which occur at a homogeneous Poisson process. As a result, the facility's resistance deteriorates with elapsed time. The deterioration process is assumed as a gamma process. The facility is broken by a strong shock when a load of the shock exceeds the resistance level. The broken facility is maintained immediately as corrective maintenance. In order to reduce a total maintenance cost, we carry out preventive maintenance. As a criterion for maintenance decision making, it adopts a total expected maintenance cost over an infinite time horizon. A necessary condition to minimize the criterion is discussed. Finally, some numerical examples are given.
Databáze: OpenAIRE