Maintenance support model for disaster prevention function of wave-eliminating device

2015 Fiscal Year Final Research Report

• Project/Area Number: 24510189
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Social systems engineering/Safety system
• Research Institution: Kobe Gakuin University (2014-2015); Tottori University (2012-2013)
• Principal Investigator: SATOW Takashi 神戸学院大学, 共通教育センター, 准教授 (30304405)
• Co-Investigator(Kenkyū-buntansha): MATSUMI Yoshiharu 鳥取大学, 大学院工学研究科, 教授 (00135667)
• Co-Investigator(Renkei-kenkyūsha): OTA Takao 鳥取大学, 大学院工学研究科, 准教授 (70233129)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 消波工 / 維持管理 / 確率過程 / 最適方策

Outline of Final Research Achievements

It applies some results of maintenance models to an armour block facility.
The armour block facility is subject to waves which occur at a stochastic process. As a result, facility's resistance deteriorates with elapsed time. The deterioration process is assumed as a stochastic 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.

Free Research Field

信頼性工学