A Fuzzy AHP and M-TOPSIS-Based MCDM Approach for the Selection of Spot Welding of Electrode Material
摘要
In the realm of high-volume production automobiles, the disruption of electrode tip connections due to heat and pressure from contact impacts the flow of current, leading to a reduction in spot-welding electrode material. This presents a significant challenge. For spot-welding electrode material, it is crucial to have attributes such as electricity conductivity, strength, and wear resistance. However, finding materials that possess all of these traits is quite challenging. The most crucial of these properties is electrical conductivity. In order to achieve a superior level of weld quality, this study put forth a technique for choosing a material that possesses both long-lasting properties and is appropriate for point welding electrodes. The discovery of crucial characteristics was achieved by the utilization of the fuzzy analytical hierarchy process (AHP). The article evaluated a total of eight distinct alloys. The rankings of these options have been determined using the M-TOPSIS method. The most suitable solutions for spot-welding mild steel sheets and plates are C16200 (Cu–Cd) and C18150 (Cu–Cr–Zr) materials. Availability, manufacturability, environmental protection rules, and cost are the key considerations taken into account during the decision-making process. Although C16200 emerged as the winner, the C18150 is the recommended choice for this application due to its cost-effectiveness. Further research is required to investigate the metallurgical changes that take place at the dimensions of contact geometry. The strengths of fuzzy logic and TOPSIS lie in their ability to handle both qualitative and quantitative criteria while considering both positive and negative ideal solutions. By incorporating fuzzy logic, fuzzy TOPSIS allows for the representation of vague or subjective preferences in the decision-making process.