The aim of the present paper is to analysereliabity and profit incurred to a sophisticated system having some components under warranty and varying failure rates of the system in bath-tub curve patterns. After burn-in of the system, the components are considered to be under failure-free warranty upto useful life period. Further, during useful life period, periodic inspections are carried out by the service engineer. On break down or deterioration of the system, inspection is carried out by the available repairman to judge whether fault is minor/ major, if fault is minor then repair/ replacement of the system is done and on observing a major fault, inspection is done by him to judge whether the faulty component is under warranty or not. If it is under warranty then service engineer is called who carries out further inspection to judge whether repair or replacement is required. In case of replacement, warranted components is replaced by a new one and an no- warranted components is replaced by an old same operational stage unit. Using the concept of regenerative point technique and Markov process, important measures of system effectiveness are calculated. Several conclusions regarding reliabilty and profit of the systems are made by graphical analysis for a particular case.
Volume 11 | 01-Special Issue
Pages: 1272-1281