Akademik Veri Yönetim Sistemi
2nd International Conference on Data Science and Applications (ICONDATA’2019), Balıkesir, Türkiye, 3 - 06 Ekim 2019, cilt.2, ss.57
Supplier Selection Using Fuzzy Analytic Hierarchy Process Method:
Application of an Automotive Supply Industry Company*
Çağın KARABIÇAK1, Burcu ÖZCAN1, Mehlika KOCABAS AKAY1
1Kocaeli University, Kocaeli, TURKEY
Abstract
In a globally competitive business environment, decision-making is vital for companies because of the rapid
development of technology and the rapid change of society's lifestyle. For this reason, companies need to use
scientific methods when making a future decision in order to maintain their competitiveness. The methods used
to decide the problems in which there are multiple criteria and where there is not a single optimum solution are
generally referred to as “Multi Criteria Decision Making Methods (MCDM). When the methods used in complex
decision making processes are examined; It is seen that many of the developed methods are considered to be
MCDM. When these methods are compared, each has several advantages and weaknesses. Analytical Hierarchy
Process (AHP) method is the most common method in multi-criteria decision making because it is the most
common method in literature. n the classical sense, the criteria are expressed by using precise expressions.
However, real-life problems may not be expressed in absolute values and contain difficult uncertainty or subjective
judgments. This situation may occur especially in qualitative information, incomplete information and information
that cannot be obtained. Language variables are used to express uncertainties and subjectivities in decisionmaking preferences, and fuzzy logic / numbers are used to model these variables. The FAHP method, which is an
improved form of classical AHP and uses fuzzy numbers, enables human opinions and convictions to be more
effective in the decision-making process. In this paper, the supplier selection process in a company operating in
automotive industry has been examined and FAHP method is used when selecting from three candidate mold
companies. The supplier selection has a complex and fuzzy structure that contains many criteria in the selection
process. When the literature was examined, among the many BAHP methods encountered, Chang's Extended
Analysis Method was preferred to be used in the related problem. The criteria to be used in the evaluation of the
mold supplier candidates were determined by taking into consideration the purchasing policies of the enterprise
and the general supplier selection criteria. The company, which has the best value in the evaluation made
according to the four main and fourteen sub-criteria determined as quality, price / cost, delivery and flexibility,
was found suitable for the production, modification and transfer of the molds.
Keywords: Automotive Sub Industry, Multi-criteria Decision Making, Fuzzy AHP, Supplier Selection