HYBRID AUTOMATED RELIABILITY PREDICTOR.

The authors present an overview of the hybrid automated reliability predictor (HARP), under development at Duke and Clemson Universities. The HARP approach to reliability prediction is characterized by a decomposition of the overall model into distinct fault-occurrence/repair and fault/error-handling submodels. The fault-occurrence/repair model can be cast as either a fault tree or as a Markov chain and is solved analytically. Both exponential and Weibull time to failure distributions are allowed. There are a variety of choices available for the specification of the fault/error-handling behavior that may be solved analytically or simulated. Both graphical and textural interfaces are provided to HARP.