Mathematical modelling and optimisation of laser welding of butt joints Online publication date: Sun, 31-Oct-2010
by K.R. Balasubramanian, K. Sankaranarayanasamy, T. Suthakar, S.P. Sivapirakasam, G. Buvanashekaran
International Journal of Computational Materials Science and Surface Engineering (IJCMSSE), Vol. 3, No. 4, 2010
Abstract: Laser welding is characterised by its high power density and concentrated heat input. The weld bead profile of laser welding depends on various parameters and these parameters are to be selected correctly to obtain the desired output. As the trial and error method for selecting weld parameters is very costly, suitable analytical methods has to be established for selecting optimum parameters for welding. In this paper the influence of laser welding parameters on the weld bead profile of butt joints are analysed and discussed. The experimentation is performed based on Box-Behnken design. Mathematical modelling is done to predict the responses and the adequacy of the model is tested using the analysis of variance. Numerical and graphical optimisation techniques are used to find the optimum process range which will improve the weld quality.
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