원문정보
초록
영어
A preventive maintenance model, caller FNBM(α,δ,γ)model, is proposed to decide an optimal repair number under achieved availability requirements(r) along with taking two types of failures(repairable or irrepairable) into account.
In this model, the current system is replaced by a new one in case when it doesn't meet the achieved availability requirement, even though it is repairable failure; Otherwise it is replaced in time of the first irrepairable failure.
Assumed that the j-th failure is repairable with probability ., minimal repairs are allowed for repairable failure between replacements. Expected cost rate for preventive maintenance model is developed using NHPP(Non-Homogeneous Poisson Process) in order to determine the optimal number ., also numerical examples are shown in order to explain the proposed model.
Since the proposed FNBM(α,δ,γ)model includes Park FNBM model(1979) and Nakagawa FNBM(p)model(1983) this proposed model is thought to be better than previous model, especially for weapon system which requires availability as primary parameter.
목차
1. 서론
2. 기존연구의 검토
2.1 사용시간기준의 예방정비(TBM)모형
2.2 고장수기준의 예방정비(FNBM)모형
2.3 사용시간 및 고장수 통합기준 예방정비(IMT & FN)모형
3. FNBM(α, δ, γ)모형의 구조
3.1 모형의 기본가정
3.2 모형의 사용기호
3.3 FNBM(α, δ, γ)모형의 설정
4.「FNBM」모형의 비교분석
4.1 기존 모형과의 비교
4.2 모수변화에 따른 최적해의 변화
5. 결론
참고문헌