Int J Performability Eng ›› 2007, Vol. 3 ›› Issue (2): 225-230.doi: 10.23940/ijpe.07.2.p225.mag
• Original articles •
ANATOLI PAUL ULMEANU and DUMITRU CEZAR IONESCU
We examine the behaviour of maintained systems that deteriorate according to a Non Homogenous Poisson Processes (NHPP). The system failures are selfannouncing; after each failure only a minimal repair is made so that the system failure rate l(t) (corresponding to Weibull failure distribution Weib (a,b)) is not disturbed. We propose a closed-formula for computing Mean Time between Failures as function of Mean Time to First Failure MTTF and the shape parameter b of Weibull failure distribution. This can lead to evaluate better the graceful degradation of complex system (power stations, airplanes, computers, etc.) with a minimal repair maintenance policy between replacements or overhauls.Received on June 13, 2006References: 05
ANATOLI PAUL ULMEANU DUMITRU CEZAR IONESCU. A Closed-formula for Mean Time Between Failures of Minimal Repaired Systems under Weibull Failure Distribution [J]. Int J Performability Eng, 2007, 3(2): 225-230.
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