Basic definitions -- 5
Availability, A(t) -- the probability that a system is operational at time t.
For systems without repair A(t) = R(t)
For systems with repair
- A(t) = ?/(?+?) - ? /(?+?) e-(?+? )t (23b)
In the steady state, i.e., t ? ?
A(t) = ?/(?+?) = MTTF/(MTTF+MTTR)