Optimization techniques used in gas tungsten arc welding process - A review

Optimization techniques are widely used tools in the engineering sector and suitable to all the fields of mechanical engineering. Welding is an important manufacturing process and its parameter optimization is highly focused on getting optimal results. Gas Tungsten Arc Welding (GTAW) is the suitable arc weld- ing process joining variety of the engineering materials. This process has various parameters like welding current, speed, arc length, shielding gas and gas type etc. A lot of attempts were made by the researchers to get an optimal outcome like the appearance of the weld bead and tensile strength etc ... In this article, various optimization techniques used in GTAW process are discussed. The widely used optimization methods, GTAW parameters and the outcomes are discussed from the literature. These result will help the researchers to avoid selecting same techniques and parameters. This paper will give guidelines to the researchers to focus on new studies. ? 2019 Elsevier Ltd. All rights reserved. Selection and peer -review under responsibility of the scientific committee of the International conference on Materials and Manufacturing Methods.