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A Cost-Based Maintenance Model based on a Non-Homogeneous Poisson Process
Volume 12, Number 6, November 2016 - SC 62 pp. 597-602
XIAOYANG MA1 and WENBIN WANG21Donlinks School of Economics and Management, University of Science and Technology Beijing, China
2Faculty of Business and Law, Manchester Matropliton University, UK
(Received on September 27, 2015; revised on May 4, September 3, September 17, 2016)
This paper considers a maintenance model for a deteriorating system subject to vibration monitoring, which is based on a real system of the wind machines from a steel mill. The system is replaced according to two thresholds: the number of allowable rebalances (i.e., maintenance activities) N, or the working age of the system T, whichever comes first. Once the system’s vibration measurement exceeds a specific value, a maintenance activity is carried out to restore the system to a better (but not “as new”) condition. This implies that the maintenance is imperfect and as such the operating interval after each maintenance action decreases stochastically. We develop a cost model to determine the optimal N and T, as shown by a numerical case example.
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