MAINTENANCE STRATEGY FOR SYSTEMS SUBJECTED TO DETERIORATION GOVERNED BY RANDOM SHOCKS
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abstract
We examine the time-stationary availability of maintained systems that deteriorate according to a random-shock process. System failures are not self-announcing; bence, failures must be detected via inspection. Our approach considers randomly occurring shocks that cumulatively damage the system; shock magnitudes are taken as random. We develop an expression for computing system availability when inspections follow a renewal process. This expression leads to a proved proposition showing that, for any specified mean inspection rate, system availability is maximized by choosing deterministic inter-inspection times. 1994 IEEE