Design and optimization of an Integrated Reliability redundancy system with multiple constraints

Integrated Reliability Model refers to the determination of the number of components, component reliabilities, stage reliabilities and the system reliability wherein the problem considers both the unknowns that is the component reliabilities and the number of components in each stage for the given Cost constraint to maximize the System Reliability. In this work an attempt is made to develop an integrated reliability redundant model for a series-parallel configuration subject to the multiple constraints. Generally reliability is treated as the function of cost but in any given practical situation apart from cost, other constraints like weight, volume etc., will have hidden impact on the reliability of the system. To design and evaluate the system reliability, a novel multiple constraint method is considered and the model is presented through heuristic method and validated by integer programming technique.