A model for warranty outsourcing using PROMETHEE method and multi-objective linear programming

In this study we introduce a model for warranty service outsourcing. This model was built based on two phases. First, by referring a failed item, using PROMETHEE, we start to rank the priority of our partners to assign the defective products. In the second phase, we assign the products to the partner with multi-objective linear programming based on the priorities that was earned from the first phase. Minimizing the costs and maximizing the customer satisfaction are the major goals in this paper. To do this we apply multi-objective zero-one L.P. counting determined ranking. As a result, decreasing the waiting time for repair the item or decreasing intervals to send the item for repair, we can expect an increase for customer satisfaction.