Machine Selecting Using Integrated SWARA – TOPSIS Method: Application in A Manufacturing Company
Bütünleşik Swara–Topsis Yöntemi İle Makine Seçimi: Bir Üretim İşletmesinde Uygulama

Author : Engin ÇAKIR -& Gülşah SEZEN AKAR
Number of pages : 206-216

Abstract

Computer Numerical Control (CNC) machines have become one of the most important equipments for efficient, fast and reliable production in today's production companies. There are many alternatives available for companies to purchase CNC machines. However, when choosing the CNC machine that will meet the expectations of the companies at the highest level, it is determined in the studies conducted in the literature that the wrong decisions can be made if they move only according to the cost. The choice of CNC machine, in a sense, is a multi-criteria decision-making process. The purpose of this study is to select the CNC machine, which will provide optimum utilization for a production company, by using the integrated SWARA -TOPSIS method. Implementation study was conducted in a production company operating in Aydın. In this company which planned to buy a CNC machine, it was determined that while the relative selection criteria for CNC were "Flexibility", "Reliability", "Safety", "Ease of Use", "After-Sales Service", and "Efficiency", the non-relative selection criterion was “cost”. A group including five decision makers was formed to determine the criterion weights and evaluate the CNC machines according to relative criteria. Significance level of the criteria was determined by the decision makers ranking them so that the most important one is the first. Criterion weights were determined by using SWARA application steps with the help of the obtained data. Then, decision makers taking the relative criteria into consideration performed the evaluation process of the alternative CNC machines. For the non-relative “Cost” criterion, price quotation for each alternative CNC machine was obtained. By evaluating all the obtained values with TOPSIS method, optimum CNC machine was suggested to the company.

Keywords

CNC Machine Selection, Criteria Weighting, SWARA Method, TOPSIS Method

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