Reliability and Fault Analysis of a Stochastic Model of a Standby System with Cost Depended Repair/Replacement of Substandard Unit and Correlated Life Time

The present paper deals with the reliability and fault analysis of a stochastic model for two non-identical units, in which first unit is kept as operative other sub-standard one. may be repaired or replaced by another on its failure, depending cost repairing/replacement. Failure repair times are considered correlated using bivariate point exponential distribution. Analysis system done to find various measures, gives system's effectiveness. conclusion about these measures carried out graphical studies. main emphasis correlation between time failure time.