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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 12    
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scirp IJSER >> Volume 2, Issue 12, December 2011
Non-perfect M/M/R Machine repair problem with spares and two modes of failure
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Spares, cold standby, warm standby, hot standby
The paper investigates the machine repair problem consisting of M operating machines with S spare machine and R servers where machines have two failure modes and server are subjected to breakdown under steady state conditions. The two failure modes have equal probability of repair. Spares are considered to be cold standby or warm standby or hot standby. Failure and service time of machines and breakdown and repair time of server are assumed to follow a negative exponential distribution. Each server is subject to breakdown even if no failed machine is in the system.
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