Title: Optimal process design for laser transmission welding of acrylics using desirability function analysis and overlay contour plots

Authors: Bappa Acherjee, Dipten Misra, Dipankar Bose, Sanjib Acharyya

Addresses: Department of Production Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India. ' School of Laser Science and Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India. ' Department of Mechanical Engineering, National Institute of Technical Teachers' Training & Research, Salt Lake City, Kolkata 700106, India. ' Department of Mechanical Engineering, Jadavpur University, Jadavpur, Kolkata 700032, India

Abstract: In this paper, an attempt is made to set the optimal laser transmission welding parameters to attain a desired weld seam with maximum joint strength. The earlier developed mathematical models are used to optimise the welding process. Design-expert software is used to optimise the process parameters, taking into account two proposed optimisation criteria. Numerical and graphical optimisation techniques are applied. The result of numerical optimisation predicts two pareto-optimal solution sets according to the planned optimisation criteria; whereas, graphical optimisation result produces overlay contour plots, which allow quick visual inspection of the area of desirable response values.

Keywords: laser transmission welding; RSM; response surface methodology; desirability function analysis; optimisation; acrylics; process design; overlay contour plots; joint strength; mathematical modelling.

DOI: 10.1504/IJMR.2011.037913

International Journal of Manufacturing Research, 2011 Vol.6 No.1, pp.49 - 61

Published online: 09 May 2015 *

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