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Multi-response optimization of CO2 laser welding process of austenitic stainless steel

Benyounis, Khaled orcid logoORCID: 0000-0001-6599-4892, Olabi, Abdul-Ghani orcid logoORCID: 0000-0001-9209-3619 and Hashmi, Saleem (2008) Multi-response optimization of CO2 laser welding process of austenitic stainless steel. Optics & Laser Technology, 40 (1). pp. 76-87. ISSN 0030-3992

Recently, laser welding of austenitic stainless steel has received great attention in industry, due to its wide spread application in petroleum refinement stations, power plant, pharmaceutical industry and households. Therefore, mechanical properties should be controlled to obtain good welded joints. The welding process should be optimized by the proper mathematical models. In this research, the tensile strength and impact strength along with the joint operating cost of laser welded butt joints made of AISI304 was investigated. Design-expert software was used to establish the design matrix and to analyze the experimental data. The relationships between the laser welding parameters (laser power, welding speed and focal point position) and the three responses (tensile strength, impact strength and joint operating cost) were established. Also, the optimization capabilities in design-expert software were used to optimise the welding process. The developed mathematical models were tested for adequacy using analysis of variance and other adequacy measures. In this investigation the optimal welding conditions were identified in order to increase the productivity and minimize the total operating cost. Overlay graphs were plotted by superimposing the contours for the various response surfaces. The process parameters effect was determined and the optimal welding combinations were tabulated.
Item Type:Article (Published)
Uncontrolled Keywords:Optimization; Tensile strength; Impact strength; Joint cost; laser welding; AISI304; RSM
Subjects:Engineering > Mechanical engineering
DCU Faculties and Centres:Research Institutes and Centres > Materials Processing Research Centre (MPRC)
DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Official URL:http://dx.doi.org/10.1016/j.optlastec.2007.03.009
Copyright Information:© 2008 Elsevier
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:18208
Deposited On:10 May 2013 13:27 by Abdul Olabi . Last Modified 26 Sep 2018 10:33

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