Integrated production quality and condition-based maintenance optimisation for a stochastically deteriorating manufacturing system

Abdelhakim Khatab, Claver Diallo, El-Houssaine Aghezzaf and Uday Venkatadri

International Journal of Production Research, 2019, vol. 57, issue 8, 2480-2497

Abstract: This paper investigates the problem of optimally integrating production quality and condition-based maintenance in a stochastically deteriorating single- product, single-machine production system. Inspections are periodically performed on the system to assess its actual degradation status. The system is considered to be in ‘fail mode’ whenever its degradation level exceeds a predetermined threshold. The proportion of non-conforming items, those that are produced during the time interval where the degradation is beyond the specification threshold, are replaced either via overtime production or spot market purchases. To optimise preventive maintenance costs and at the same time reduce production of non-conforming items, the degradation of the system must be optimally monitored so that preventive maintenance is carried out at appropriate time intervals. In this paper, an integrated optimisation model is developed to determine the optimal inspection cycle and the degradation threshold level, beyond which preventive maintenance should be carried out, while minimising the sum of inspection and maintenance costs, in addition to the production of non-conforming items and inventory costs. An expression for the total expected cost rate over an infinite time horizon is developed and solution method for the resulting model is discussed. Numerical experiments are provided to illustrate the proposed approach.

Date: 2019
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Citations: View citations in EconPapers (8)

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DOI: 10.1080/00207543.2018.1521021

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