A study on Optimum Inspection Policy for an equipment with two stages of failures

이단계 고장을 갖는 설비에 대한 최적 검사 정책

This paper deals with a problem of choosing an optimum inspection period for an equipment with two stages of failures. Stage I failure which can be detected only through inspection detenorates the equipment and causes critical stage II failure after a random period of time. The expected average cost function is obtained and an optimum inspection policy is discussed. A numerical example is also worked out.