Recent development on reliability assessment for a multi-component system with masked failure data

Modelling times between failures of a repairable system is of interest in many real world applications such as estimation of the number of warranty claims and scheduling maintenance policies. In practice, technical systems are composed of multiple components. Failure data collected from the field are normally masked in the sense that times between failures are available but the causes of failures are lacking. For the simplest example where a failed component in the system is replaced with a new identical one, the failure process of such a system forms a superimposed renewal process (SRP). This presentation aims to review some recent developments in modelling the SRP and extends the discussion to the scenario when imperfect repair is conducted on failed components.