Geometric failure rate reduction model for the analysis of repairable systems

A failed component / system brought back to its functioning state after repair exhibits different failure intensity than before its failure. This happens because the system in which the component is functioning experiences deterioration with age or the component / system is a repaired one which is aged compared to a new component / system. These factors affect the failure intensity of the component / system. To model the failure behaviour of such a component / system a simple model, termed the geometric failure rate reduction model by Finkelstein, is proposed. This model effectively models the changed failure behaviour of the component / system under the above circumstances. The model, and its inference are described and its application to a repairable systems demonstrated.