Faculty of Mechanical Engineering

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    Item type:Publication,
    E. Doncheva, M.Petreski, A.Krstevska N.Avramov, J.Djokikj, “Sustainability assessment of welding processes: a review “, IIW 2022 International Conference on Welding and Joining - Innovative Welding and Joining Technologies to achieve Carbon Neutrality and promote Sustainable Development, (21-23.07.2022), Tokyo, Japan, Program | IIW2022.
    (The International Institute of Welding (IIW), 2022-07-21)
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    Petreski, Martin
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    Krstevska, Aleksandra
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    Over the past several years, sustainability has become an important performance metric in industry and a significant driver for the development of innovative concepts and technologies, taking into account economic, social and environmental aspects. Welding is one of the major techniques used in manufacturing industries that requires a large amount of energy and resources and also it is considered dangerous to health and the environment. Energy-saving and constraints in carbon emissions have become a priority in the manufacturing sector therefore, the minimum energy-oriented sustainable welding processes are highly recommended. This paper aims to provide a structured overview of the wide field of research in sustainable production with a focus on the sustainability assessment of welding processes. It describes and outlines the available methodologies used and explores the most recent advances in the field. Based on a broad literature review, research gaps are identified and the scope of future work is discussed. Furthermore, this paper contributes to the advancement of current practices in measuring and assessing the sustainability of welding processes.
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    Item type:Publication,
    Sustainability and environmental life cycle analysis of welding processes
    (International Journal of Structural Integrity, Emerald Publishing Limited, 2024-07-29)
    Elisaveta Doncheva
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    Nikola Avramov
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    Aleksandra Krstevska
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    Martin Petreski
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    Jelena Djokikj
    Purpose–Welding is a widely used manufacturing process in many industries. The process consumes a lot of energy and resources, pollutes the environment, and emits gases and fumes into the atmosphere that are dangerous to human health. There are various welding processes, and the suitable welding process is usually chosen based on cost, material, and conditions. Subjectivity is the most significant impediment to selecting an optimal process. As a result, it is critical to develop the appropriate set of criteria, use the best tool and methodology, and collect sufficient data. This study examines the sustainability of welding processes and their environmental impact. Design/methodology/approach– The welding process’s sustainability was examined and discussed in general, considering the technological specifics of each welding process, physical performance, and environmental, economic, and social effects. The study investigates the environmental impact of MMAW, GMAW, and GTAW/GMAW processes through experimental work and LCA methodology. Findings– MMAW is the most environmentally harmful technology, whereas GMAW has the least impact. The GTAW/GMAW process outperformed the other processes in terms of yield stress, but the analyses revealed that it had a greater environmental impact than GMAW. Originality/value– The study provides an environmental impact summary and demonstrates the effects of welding parameters and processes. This gives users an understanding of choosing the best welding technique or making the process more environmentally friendly. These recommendations help policymakers identify hot spots and implement the right plans to achieve more sustainable manufacturing.