Title: Prediction of formability of MIG and TIG welded joints by Erichsen cupping test and fuzzy-logic technique

Authors: Shailesh Dewangan; S. Deepak Kumar; Sanjay Kumar Jha; Anand Prakash

Addresses: Department of Production Engineering, Birla Institute of Technology, Mesra, 835215, Ranchi, India ' Department of Production Engineering, Birla Institute of Technology, Mesra, 835215, Ranchi, India ' Department of Production Engineering, Birla Institute of Technology, Mesra, 835215, Ranchi, India ' School of General Management, National Institute of Construction Management and Research, Pune, India

Abstract: The current investigation was carried out to evaluate the formability characteristics of tungsten inert gas (TIG) and metal inert gas (MIG) welded parts by conducting Erichsen tests. It is noted that in both the MIG and TIG welded parts, the fracture occurred irrespective of the sheet metal thickness. However, the formability of TIG welds was comparatively better than the MIG weld parts. Further, fuzzy-logic method was adopted to predict the Erichsen index value and compared with the experimental values. It was observed that fuzzy-logic predicted values were nearly accurate to the experimental ones, with a minor error of 1.4%. Fuzzy-logic technique is found to be a useful technique to predict the response and in saving time and costly trials on the shop floor, thus beneficial for industrial applications.

Keywords: Erichsen cupping test; fuzzy-logic; MIG TIG welds; Erichsen index.

DOI: 10.1504/IJMATEI.2021.116947

International Journal of Materials Engineering Innovation, 2021 Vol.12 No.3, pp.246 - 258

Received: 22 Aug 2020
Accepted: 20 Nov 2020
Published online: 09 Aug 2021 *

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