Abstract
Preventive maintenance (PM) is the maintenance carried out at predetermined intervals or according to prescribed criteria and intended to reduce the probability of failure or the degradation of the functioning of an item. When designing maintenance policies for complex systems, a common process is to adopt a top-down methodology : selection of a maintenance strategy such as RCM (reliability centered maintenance), TPM (total productive maintenance), and RBM (risk based maintenance), and then selection of maintenance policy such as condition-based maintenance and PM. In the entire process, PM models, which can be used to estimate not only the effectiveness of the PM but also some reliability indices such as time to failure, play an important role. In the literature, a number of PM models have been proposed to measure PM effectiveness, considering different applications. This paper first presents a brief review on PM strategies, and then reviews existing PM models.
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