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ABSTRACT
A key issue faced within the manufacturing industry is determining how to measure quality characteristics and priorities improvements to be made to all substantial quality characteristics of a product (weld deposit) with respect to resource requirement.
This study proposes an Entropy-TOPSIS approach in order to address this issue. The propose methods is not only helpful to measure and determining the quality characteristics meet standards but also to rank improvements in all substandard quality characteristics of a product in light of resource requirements and potential for performance improvement.
Gas tungsten arc welding (GTAW) process is used to produce the weld because of its effectiveness for tin plates and its versatility, secondly all input parameters such as voltage, current, wire diameter and gas flow-rate and output parameter such as bead penetration and ultimate tensile strength are measured and recorded. Lastly, the weight of the evaluation criteria can be calculated by using the entropy method and the values of separation can be substituted into the TOPSIS method.
The entire hybrid approach produces the relative closeness to the ideal solutions which gives value between 0 and 1. The closer it is to 1 the better
