Two-phase selection procedure of aluminized sheet supplier by applying fuzzy AHP and fuzzy TOPSIS methodology

摘要

This paper presents a new, two-phase, multi-criteria procedure for selection of a supplier of aluminized sheet to be used in the car exhaust system. In the first stage a procedure of modelling the relative importance of weighted criteria using fuzzy AHP (Analytic Hierarchy Process) was carried out, while in the second phase prioritization and selection of suppliers based on the distance from an ideal solution, using the corrected fuzzy TOPSIS (Technique for Order of Preference by Similarity to Ideal Solution) methodology were done. Crisp values criteria were recorded and represented by numbers, and uncertain criteria values were represented by linguistic expressions that were converted into fuzzy numbers. Prioritization was done by comparing values in a descending order. A software solution based on the proposed methodology was done. An illustrated example with real data of sheet provision was also presented.