Decision support system for raw material supplier selection by using fuzzy AHP-TOPSIS method in PT Mulia glass

PT. Mulia Glass is a company that produces glass sheets. The raw materials procurement process which is conducted by previous purchasing division is only emphasized price and other subjective criteria. This research aims to design a Decision Support system (DSS) selection of raw material suppliers using the Fuzzy-AHP and TOPSIS methods. The design of a decision support system begins with the initiation and analysis system. System databases consist of the user database, suppliers, raw materials, criteria, comparison of criteria, master TFN, criteria weights and alternative values. Model Base consists of a Fuzzy-AHP model to determine the value of the criterion weights and TOPSIS model is used for supplier alternative alignment. The DSS implementation is designed using the PHP and MySQL programming languages. Criteria for the selection of raw material suppliers such as price, quality, time of payment, customer care, and service. Result of Fuzzy-AHP TOPSIS consists of rank with the first place is PT.C with evaluation value 0.578, second and place PT.A with a value of 0.414. The validation result of a manual calculation and DSS shows the same result, it is concluded that the raw material supplier selection DSS is valid.