Abstract
In the present study, two stochastic models of a computing device are studied using the concept of imperfect fault detection in the presence of regular and expert repairman. The computing device is a combination of hardware and software components which works together but fails independently. In both models, the unit is under observation for fault detection by the regular repairman. In first model, if the unit is seriously damaged then it undergoes for replacement by regular repairman otherwise it is sent back to operation after maintenance. In second model, if the unit is seriously damaged then it undergoes for repair by expert repairman otherwise it is sent back to operation after maintenance. Various reliability measures for both the system models are obtained using semi-Markov process and regenerative point technique. Finally to highlight the importance of the study empirical results have been obtained with respect to fault detection rate.
Published Version
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