Analysis of the Reliability of A Three-Component System With Two Repairmen

In this paper authors have considered a system having three units a, b1 and b2. a is controlled by a controller and b1 and b2 are independent. two repairmen are involved in repair of the system. one of the repairmen (the first) is the foreman (boss) and the other an assistant (apprentice). whenever any unit fails, repair is undertaken by boss. if the boss is busy in repairing and at the same time other unit fails then the repair is undertaken by apprentice. the mathematical model obtained has been analyzed with the application of copula. the laplace transforms of the transition state probabilities being in various complex systems have been obtained. using abel’s lemma steady state behavior of the system has also been examined. m.t.t.f and important characteristic of reliability measures have also been evaluated.