TY  - JOUR
PY  - 1996//
TI  - Optimal age-dependent preventive maintenance policies with imperfect maintenance
JO  - International journal of reliability, quality and safety engineering
A1  - Wang, Hao
A1  - Pham, Hoai
SP  - 119
EP  - 135
VL  - 3
IS  - 2
N2  - This paper proposes three age-dependent preventive maintenance models with imperfect repair and/or imperfect preventive maintenance (pm). In these models imperfect repair is treated in a way that after repair the lifetime of a unit will decrease to a fraction of its immediately previous one and its repair time will increase to a multiple of immediately previous one. In this paper, the expected maintenance cost rate and asymptotic average availability are derived with a consideration that the maintenance and repair times are not negligible. The optimum maintenance policies are then determined for the three imperfect maintenance models respectively. A class of related optimization problems is also discussed. Finally, a numerical example is presented to illustrate the results.<p />
LA  - 
SN  - 0218-5393
UR  - http://dx.doi.org/10.1142/S0218539396000090
ID  - ref1
ER  -