Are MCDM methods sufficient for Sustainability Assessment of welding processes?
The sensitivity analysis results show that the changes in the output values with respect to changes in the selected input values are insignificant and within an acceptable for the three MCDM methods. This implies that the three methods are sufficiently adequate to be used for sustainability assessment of welding processes for this study.
Which welding process has the greatest environmental impact?
The most salient results include that the TIG welding process with filler generated the greatest environmental impact due to its higher consumption of shielding gas. On the other hand, the SMAW process demonstrated the best environmental performance as categories such as Global Warming Potential; CO 2 emissions dropped by 93.29%.
Are manual welding processes more risky to welders' health?
Chang et al. carried out a study that integrated the use of both life cycle assessment (LCA) and social life cycle assessment (SLCA) tools to investigate the environmental and social impacts of several welding processes. The authors concluded that manual welding processes are more risky to welders’ health than automatic processes.
Are welding processes harmful to the environment?
However, the welding processes have negative environmental impact as they consume significant quantities of energy and resources. Also, the amount of greenhouse gases emitted and fumes discharged by welding processes is large and can cause serious health issues to welders.
Are welding processes sustainable?
Also, the amount of greenhouse gases emitted and fumes discharged by welding processes is large and can cause serious health issues to welders. Limited research work has been done to evaluate the sustainability performance of welding processes [29, 30, 31, 32, 33, 34, 35, 36, 37, 38].
Which welding processes are used in real life applications?
The welding processes considered in this study are friction stir welding (FSW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW) and shielded metal arc welding (SMAW). The four welding processes are widely used in real life applications.
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