https://www.i-scholar.in/index.php/IWJ/issue/feed Indian Welding Journal 2024-01-11T04:43:42+00:00 Dr. Santanu Das sdas.me@gmail.com Open Journal Systems <p>Indian Welding Journal is the official journal of the Indian Institute of Welding (IIW-India) being published quarterly since 1968. It is published in Technical Association with The American Welding Society. Original articles published in Indian Welding Journal are indexed by EBSCO-USA, Crossref-USA, i-Scholar, j-Gate and Indian Citation Index.</p><p>Original articles on welding, joining and cutting are invited from prospective authors, and articles are to send to the Chief Editor through email ID: iwj.iiw@gmail.com. Article submission guidelines are available in www.iiwindia.com. There is no page charges, and articles are published free of any cost. Articles are double-blind peer reviewed, and plagiarism checked by Crossref system powered by ithenticate.</p> https://www.i-scholar.in/index.php/IWJ/article/view/223724 Editorial 2024-01-11T04:43:42+00:00 Santanu Das iwj@iiwindia.com No Abstract. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223926 Artificial Intelligence / Machine Learning in Welding 2024-01-11T04:43:42+00:00 Surendra Vaidya smvgodrej@gmail.com No Abstract. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223927 Importance of Earthing of Completion of Electrical Circuit with Minimum Resistance in Welding 2024-01-11T04:43:42+00:00 Surendra Vaidya smvgodrej@gmail.com No Abstract. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223725 Joint Characteristics of Cu-Ni Alloy Fabricated by GTAW and MPAW Processes: A Comparative Study 2024-01-11T04:43:42+00:00 Swagat Dwibedi swagatsudhadwibedi@iitg.ac.in Swarup Bag swarupbag@iitg.ac.in The current work presents a comparative analysis of the joint behavior of Cu-Ni alloy weldments fabricated by Micro-Plasma Arc Welding (MPAW) and Gas Tungsten Arc Welding (GTAW) processes. The Cu-Ni alloy thin sheets are fabricated at different values of heat input (~40-135 J/mm) by MPAW and GTAW processes, respectively. Further, to evaluate their characteristics, joints are subjected to metallurgical, mechanical, and electrochemical testing. The joints fabricated with a higher magnitude of heat input resulted in deteriorated surface quality with a value of R ~ 6.13 µm. The increased surface roughness value of the joints resulted in a a higher corrosion rate (1.273 mm/year). A finer microstructural morphology is achieved for lower heat input condition. Accordingly, the weldment exhibited higher joint efficiency of ~91%.The prominent reason for achieving higher joint strength is related to the presence of lower secondary dendritic arm spacing (SDAS), which enhances the joint strength and ductility for the joints as compared to higher SDAS value. Further, the micro-fractography analysis reveals the presence of micro/macro-voids for high heat input, whereas the existence of numerous dimples of varying size and depth is observed for low heat input condition, implying the role of heat input of utmost importance. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223726 Green Welding – The Saviour 2024-01-11T04:43:42+00:00 Rituraj Bose rituraj.bose@iiwindia.com Though the welding technology has undergone a phenomenal change over the last five decades, the atmosphere or our environment is still under severe risk through the welding activities, including global warming. The main hazard due to welding activities are fumes and gases. In most of the welding operations, welding smoke is generated in large volume, which is a complex mixture of very fine particles (fumes) and airborne gases. To overcome the situation, green welding is the only way forward. Use of friction stir welding (FSW) is one of the ways towards green welding as well as to protect the environment somehow. Other less pollutant welding processes are also to be adopted as far as possible. Another way to protect our environment and to adopt green welding is to train the welders through virtual reality driven welding simulator. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223728 Investigations on Transient Temperature Distribution and Distortion in Shielded Metal Arc Welding of SA 516 Gr. 70 Steel 2024-01-11T04:43:42+00:00 Kalpeshkumar M. Sojitriya kalpeshsojitriya@gmail.com V. D. Kalyankar vivekkalyankar@yahoo.co.in K. V. Champaneria karanchampaneria25@gmail.com G. P. Chudasma gautamchudasama@gmail.com Efforts are made in this article to investigate the thermal and mechanical phenomena by presenting a coupled thermal and structural analysis of SA516 Grade-70 steel. This material has wide applicability in the fabrication of pressure vessels, boilers, etc., due to its excellent weldability and formability. An actual ongoing problem from a reputed industry, related to distortion during the shielded metal arc welding process, is considered and experiments are carried out on the chosen steel. Results are evaluated employing a two-step methodology, involving simulation. The first step encompasses thermal analysis, providing insights into transient temperature distribution, while the subsequent mechanical analysis offers data on residual stresses and distortion. In the case of heat input, a volumetric heat source with double ellipsoidal heat distribution is used whereas a plasticity material model with rate-independent bilinear kinematic hardening is adopted for the structural analysis. Additionally, temperature-dependent material properties are factored into both scenarios. The data derived from numerical analysis align closely with experimental findings, presenting valuable insights for fabricating industries. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223729 Artificial Neural Networks Based Prediction of Penetration in Activated Tungsten Inert Gas Welding 2024-01-11T04:43:42+00:00 Samarendra Acharya samarendraacharya2012@gmail.com Debasish Gonda debashisgonda.me@gmail.com Santanu Das sdas.me@gmail.com Using GTAW, or tungsten inert gas (TIG) welding, weld penetration is usually lesser than the other arc welding processes. ATIG (Activated-flux TIG) welding can be a good alternative to provide deep penetration, and hence, improved productivity. In this work, 304L SS plate of 8 mm thickness was used as base plate, and a flux with a mixture of SiO<sub>2</sub>, MnO<sub>2</sub> and MoO<sub>3</sub> was used as a ternary flux in the ratio of 1:1:2. A 2-factor 3-level response surface methodology of central composite design was considered for designing experimental runs. Back Propagation (BP) type Artificial Neural Networks (ANN) model was developed to assess penetration in ATIG welding by using heat input and pulse frequency as the two process parameters. The ANN chosen has 2-10-1 network structure. Results show that the predicted values through ANN are conforming quite well to the experimentally obtained penetration, and hence, the applicability of ANN. 2024-01-01T00:00:00+00:00 https://www.i-scholar.in/index.php/IWJ/article/view/223730 Welding of Steel - Its Mechanism and Applications in Multiple Sectors 2024-01-11T04:43:42+00:00 A. K. Vaish vaishakvnml@gmail.com Ritesh Patel B. J. Chauhan S. D. Kahar Ankit Bhojani K. M. Bhaisaheb Keshva Narayana Among different metals steel can be easily welded and welded steel has required strength, good ductility and sufficient resistance to general corrosion media. Since steel welding is being used in all types of fabrication industries, the mechanism of steel welding has been explored for different types of steel along with its multiple applications. 2024-01-01T00:00:00+00:00