Optimization and non-destructive test analysis of SS316L weldments using GTAW


Mat. Res.




This work aims at optimization and analysis of SS316L weldments using TIG Welding, SS316L is selected over other grades because of its lower carbon content and its weldability properties. The welding parameters are being assessed by means of Taguchi's L9 orthogonal array with varying gas flow, current and bevel angle with the predictions achieved the sample is welded. The level of importance of welding parameters for tensile strength is determined by using analysis of variance (ANOVA) and it was concluded that gas flow played the prominent role and the bevel angle was least contributor. The optimization of power and the gas flow is made analytically so some confirmatory tests were performed to check the efficiency of the predictions found. The Radiography inspection and microstructure test were performed on samples which showed low, medium and high tensile strength in order to view the changes occurred after welding.

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