Life cycle assessment (lca) of welded of aisi 304 stainless steel using laser beam welding (lbw), friction stir welding (fsw) and gas tungsten arc welding (gtaw)

A. A. Afzal, M. Mobeen Shaukat, B. S. Yilbas*, S. S. Akhtar, F. Al-Badour

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

This paper analyses the environmental impacts of three different welding processes using life cycle assessment (LCA). Thin sheets of AISI 304 stainless steel are welded using friction stir welding (FSW), laser beam welding (LBW) and gas tungsten arc welding (GTAW). Data is collected for energy, material, and shielding gas consumption during welding of AISI 304 sheets using these welding processes. Then LCA is used to quantify environmental impacts of these processes using following six impact categories: Acidification potential, abiotic depletion potential, eutrophication potential, global warming potential, photochemical ozone creation potential, and ozone depletion potential. The results of the study reveal that of the three processes LBW causes the least environmental impacts whereas FSW causes the highest environmental impacts in all six categories. The relationship between sheet thickness and environmental impacts of welding is also reported. This study can help in selection of environment friendly welding process for thin sheets of steel.

Original languageEnglish
Pages (from-to)33-42
Number of pages10
JournalLasers in Engineering
Volume48
Issue number1
StatePublished - 2021

Bibliographical note

Publisher Copyright:
© 2020 Old City Publishing, Inc.

Keywords

  • (LCA)
  • AISI 304 stainless steel
  • CO2 laser
  • Environmental impacts
  • Friction stir welding (FSW)
  • Gas tungsten arc welding (GTAW) life cycle assessment
  • Laser beam welding (LBW)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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