Читать книгу Repairable Systems Reliability Analysis - Rajiv Nandan Rai - Страница 16

A repairable system is a system that is restored to its functionable state after the loss of functionability by the actions other than replacement of the entire system. The two extremes of the repair are perfect and minimal repairs. A system is said to be perfectly repaired, if the system is restored to AGAN condition (as it is replaced with a new one). On the other hand, a system is said to be minimally repaired, if its working state is restored to ABAO. Any repair other than perfect and minimal repair comes under imperfect repair. Most of the repairs observed in day-to-day systems are imperfect repairs, i.e., a system is neither restored to AGAN conditions nor to ABAO conditions. The RP is used to model AGAN condition. The NHPP is often used to model repairable systems that are subject to minimal repair. The GRP allows the goodness of repairs within two extremities, viz., AGAN repair (RP) to the same-as-old repair (NHPP).

The next chapter describes the mean cumulative function (MCF) based graphical and non-parametric methods for repairable systems.