The use of the Taguchi method with grey relational analysis and a neural network to optimize a novel GMA welding process

Authors:
Hsuan-Liang Lin
Affiliations:
Department of Vehicle Engineering, Army Academy R.O.C., Taoyuan, Taiwan, ROC
Venue:
Journal of Intelligent Manufacturing
Year:
2012

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Abstract

The objective of this paper is to present an integrated approach using the Taguchi method (TM), grey relational analysis (GRA) and a neural network (NN) to optimize the weld bead geometry in a novel gas metal arc (GMA) welding process. The TM is first used to construct a database for the NN. The GRA is adopted to solve the problem of multiple performance characteristics in a GMA welding process using activating flux. The grey relational grade obtained from the GRA is used as the output of the back-propagation (BP) NN. Then, a NN with the Levenberg-Marquardt BP (LMBP) algorithm is used to provide the nonlinear relationship between welding parameters and grey relational grade of each weldment. The optimal parameters of the novel GMA welding process were determined by simulating parameters using a well-trained BPNN model. Experimental results illustrate the proposed approach.