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Metals
Special Issues
Current Developments in Welding and Joining Technologies
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Current Developments in Welding and Joining Technologies

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Welding and Joining".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 4540

Special Issue Editors

Dr. Abhay Sharma

E-Mail Website
Guest Editor
Department of Materials Engineering, KU Leuven, Campus De Nayer, 2860 Sint-Katelijne Waver, Belgium
Interests: welding engineering; process modelling; additive manufacturing
Special Issues, Collections and Topics in MDPI journals
Dr. Anirban Bhattacharya

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Indian Institute of Technology Patna, Bihta, Dist. Patna, Bihar PIN 801106, India
Interests: welding; sheet metal forming; metallurgical characterization; mechanical properties

Special Issue Information

Dear Colleagues,

Since their inception in the early 1900s, welding and joining technologies have been a major contributor to industrial development. In the last two decades, these techniques have shown prolific growth due to several contributing factors, vis-à-vis effective control systems, powerful simulation tools, wide-ranging material databases, sophisticated monitoring and testing equipment, and advanced characterization facilities. As a result, welding and joining technologies have developed as complex but indispensable multipurpose, multidomain, and multiscale operations. Various recent variants of welding and joining techniques have efficaciously widened the applicability ranging from joining to fabrication of multimaterial components. Furthermore, the knowledge acquired over the decades along with the aforementioned factors has also played an important role in the development of metal-based additive manufacturing processes and systems.

This Special Issue is intended to document recent research and development activities in welding and joining. Topics of interest include the latest advances in the welding and joining frontier areas, including but not limited to the following:

  • Welding, joining, and related material processing techniques;
  • Additive manufacturing, in situ alloying, surfacing, cladding, and cutting;
  • Weldability;
  • Welding of dissimilar materials, polymers, exotic materials, and novel materials;
  • Material behavior and integrity of welded joints;
  • Process, product, or material-based modeling and simulation;
  • Characterization of bulk, surface or local features, properties, and phenomena;
  • Automation, monitoring, and control of welding operations;
  • Design, analysis, and fabrication of welded structures;
  • Quality, health, safety, and environmental issues.

It is our pleasure to invite you and your research group members to submit full-length research articles, communications, or reviews to this Special Issue. 

Dr. Abhay Sharma
Dr. Anirban Bhattacharya
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Metals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Fusion welding
  • Solid-state joining
  • Welding-based additive manufacturing
  • Surfacing
  • Metals and alloys
  • Polymers
  • Modeling and simulation
  • Characterization
  • Monitoring and control
  • Design and analysis

Published Papers (2 papers)

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Research

13 pages, 4501 KiB  
Article
Reconfigurable Measuring System for Quality Control of Cross-Wire Welding Group of Products
by Maja Vlatković, Duško Pavletić, David Ištoković and Marko Fabić
Metals 2022, 12(7), 1083; https://doi.org/10.3390/met12071083 - 24 Jun 2022
Cited by 3 | Viewed by 1336
Abstract
Quality control of welded joint is an indispensable part of the welding production process. As part of spot resistance welding group, cross-wire welding process showed great application for welding of products for everyday usage. The non-contact quality control checking is fit for purpose [...] Read more.
Quality control of welded joint is an indispensable part of the welding production process. As part of spot resistance welding group, cross-wire welding process showed great application for welding of products for everyday usage. The non-contact quality control checking is fit for purpose due to specific characteristics of welded products that consist of two cross welded wires or a combination of wires and strips. This work proposes a new method for detecting and measuring of required dimensional parameters, but also founds its applicability for other products if required. A crucial parameter of this research is the height of welded joint, which is necessary for calculating the penetration of the wire into the wire. The proposed measuring method with a reconfigurable measuring system is explained in this paper. The main component of this system is using a machine vision system, which has become an indispensable part of industrial metrology and is considered one of the industry 4.0 concepts. The calibration process for such systems could be very complicated. This work shows an elaborated calibration procedure for this kind of measuring system with referenced standards made for this purpose. Measurement results are compared with ones obtained by conventional method. The focus of vision system is a substantial part as it dictates the quality of the system. This research is done within the project in collaboration with the industrial sector and all samples are from real processes. The results of measured penetration on one product group are showing the applicability of a reconfigurable measuring system in the welding sector, and demonstrate that measurement of welding penetration based on machine vision is feasible and can ensure accuracy. Full article
(This article belongs to the Special Issue Current Developments in Welding and Joining Technologies)
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17 pages, 3055 KiB  
Article
Unveiling Liquation and Segregation Induced Failure Mechanism in Thick Dissimilar Aluminum Alloy Electron-Beam Welds
by P. Mastanaiah, G. Madhusudan Reddy, Anirban Bhattacharya, Angshuman Kapil and Abhay Sharma
Metals 2022, 12(3), 486; https://doi.org/10.3390/met12030486 - 13 Mar 2022
Cited by 3 | Viewed by 2321
Abstract
This study presents new findings on the underlying failure mechanism of thick dissimilar electron-beam (EB) welds through a study on the AA 2219-AA 5083 pair. Contrary to the prior studies on EB welding of thin Al alloys, where liquation in the grain boundaries [...] Read more.
This study presents new findings on the underlying failure mechanism of thick dissimilar electron-beam (EB) welds through a study on the AA 2219-AA 5083 pair. Contrary to the prior studies on EB welding of thin Al alloys, where liquation in the grain boundaries (GBs) in the partially melted zone (PMZ) was not observed, the present investigation for thick EB welds reports both liquation and increased segregation of Cu in the PMZ. The work is thus directed towards understanding the unusual observation in the PMZ of thick EB weld through investigation of the microstructural variation across the various regions of the produced weld. The microstructural results are correlated with the mechanical properties of the weld, i.e., hardness variation and tensile response. Results of this investigation suggest that unlike the convention that EB welding produces sound dissimilar Al welds, the weld performance for thick EB Al welds is affected by the heat input, the associated cooling rates, and most importantly by the base material thickness. Extensive liquation and Cu segregation induced failure in the PMZ on the AA 2219 side of the dissimilar weld. The underlying failure mechanism is explained through a heat-transfer analysis. Beyond a certain plate thickness, the heat transfer changes from two to three-dimensional. As a result, retarded cooling promotes liquation and Cu segregation in thick EB welds. Full article
(This article belongs to the Special Issue Current Developments in Welding and Joining Technologies)
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