Abstract
Corrective maintenance (CM) is carried out to correct failures while preventive maintenance (PM) is to avert failure. They both play an important role in asset management. Accurately estimating the effectiveness of PM is needed as it has an impact on system health management. Given failure times and maintenance related data, it is possible to estimate the effectiveness of maintenance. This paper proposes PM and CM models based on the different combinations of the type of maintenance carried out, estimates the parameters in those models, simulates their failure intensities and then studies the maintenance effectiveness using maintenance data of industrial equipment.
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