Reliability Characteristics of a Repairable System
The reliability characteristics of a repairable system include:
• Transient/Time-dependent Indices:
◦ Reliability, R(t).
◦ Time-specific availability, A(t).
◦ Time-specific unavailability, U(t).
◦ Time-specific individual state probabilities, PI(t).
◦ Time-specific failure frequency, v(t).
◦ Frequency of visits to a particular state at time , vI(t).
◦ Time-specific capacity/reward, C(t).
• Time-independent Indices:
◦ Steady-state Availability, A.
◦ Steady-state Failure Frequency, v.
◦ MTTF (Mean Time to First Failure).
◦ MTBF (Mean Time Between Failures).
◦ MTTR (Mean Time to Repair).