Modelling age replacement policy under multiple time scales and stochastic usage profiles

Nicole Diaz, Rodrigo Pascual, Fabrizio Ruggeri and Enrique López Droguett

International Journal of Production Economics, 2017, vol. 188, issue C, 22-28

Abstract: This paper offers an original methodology to set multi-dimensional maintenance policies for machines whose aging processes require using multiple time scales. It can be considered a generalization of the traditional approach, that usually employs a unique time scale and sets a single age limit to carry out preventive maintenance actions. The methodology also considers situations in which a set of machines are operated using multiple usage profiles. We define usage profile as the relationship between the use of a machine in terms of one main time scale and another scale. In our case study the age of a mining haul-truck component can be best modeled as a combination of operating hours and load cycles since the last overhaul. We compare the results obtained with respect to using a single time scale policy. The comparison shows the importance of the bias in decision making that may arise due to incomplete modelling of the components' aging process.

Keywords: Physical asset management; Maintenance policy; Multiple time scales; Multiple usage profiles; Maintenance decision support system (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:proeco:v:188:y:2017:i:c:p:22-28

DOI: 10.1016/j.ijpe.2017.03.009

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