Optimum Periodic Preventive Maintenance Time for a System with Imperfect Maintenance

불완전보전을 고려한 시스템의 최적 정기 예방보전 시기

Almost preventive maintenance policies assumed that the system after pm has failure rate as before pm with probability p and as good as new with probability 1-p. This paper considers the s-expected cost of the model with imperfect periodic preventive maintenance that increasing minimal repair costs at failure and obtains the optimum periodic preventive maintenance time. Numerical example are shown in which the failure time of the system has gamma distribution.