ISSN 2384-5058
Abstract: In any welding process, the weld's yield strength relative to the source metal is the most ideal strength parameter. The increasing need for stronger weld connections in structural and industrial materials necessitates a constant review and improvement of the welding process parameters. The relationship between certain mild steel weldment input variables (current, voltage, and gas flow rate) and their matching response variables has proven a problem. Response surface methodology (RSM) is used in this study to try to find a second-order logical link between the response variable (yield strength) and a subset of the input variables (current (I), voltage (V), and gas flow rate (GFR). In this study, we employed the Response Surface Methodology (RSM) for analysis, following the production of the central composite design matrix using the design expert program. This resulted in 20 experimental runs. Using the RSM and 170 amps of current, 18 volts of voltage, and 10.00 litres per minute of gas flow, we were able to get a mild steel weldment yield strength of 256.01. This study demonstrates that using the Response Surface Methodology (RSM) can improve the efficiency of TIG mild steel and forecast its yield strength.
Keywords: application, surface, yield strength, mild steel welding