Design Optimization of TIG Welding Process for AISI 316L Stainless Steel
Subhas Chandra Moi1, Pradip Kumar Pal2, Asish Bandyopadhyay3 

1Subhas Chandra Moi, Department of Mechanical Engineering, Jadavpur University, Kolkata, India.
2Pradip Kumar Pal, Department of Mechanical Engineering, Jadavpur University, Kolkata, India.
3Asish Bandyopadhyay, Department of Mechanical Engineering, Jadavpur University, Kolkata, India.

Manuscript received on 15 March 2019 | Revised Manuscript received on 23 March 2019 | Manuscript published on 30 July 2019 | PP: 5348-5354 | Volume-8 Issue-2, July 2019 | Retrieval Number: B2509078219/19©BEIESP | DOI: 10.35940/ijrte.B2709.078219
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Abstract: AISI 316L stainless steel materials of thickness 3 mm have been united by tungsten inert gas (TIG) welding in square butt joint configuration as per Box-Behnken design technique of response surface methodology (RSM) to indentify the effects of input parameters on the quality of the TIG welded joints. The output responses have been measured after experimentation. Mathematical correlation between input parameters and output responses has been developed using RSM. The factors which influences on responses have been analyzed by generating the response surface and contour plots. Desirability function analysis (DFA) is employed for finding optimum parametric setting to achieve the most favourable mechanical properties. Microstructures of welded samples are also investigated to correlate the metallurgical-mechanical characteristics of the welded specimens. The result indicates that at the intermediate values of welding parameters create fine grain structure and superior mechanical properties.
Keywords: Desirability Function Analysis, Microstructure, Optimization, Response Surface Methodology.

Scope of the Article: Design Optimization of Structures