Redundancy Allocation Combined with Supplier Selection for Design of Series-parallel Systems

In this paper a redundancy allocation problem is studied where for the first time the supplier selection is taken into consideration and redundant components are provided from appropriate suppliers with the most suitable offers such as discount on buying price of components, warranty length for components, things like that, so that the system reliability, profit and the warranty length proposed by suppliers are simultaneously maximized.  The resulted multi-objective model is then dealt with the well-known compromise programming approach and the performance of the proposed model is investigated through a numerical example.