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J Weld Join > Volume 30(6); 2012 > Article
Journal of KWJS 2012;30(6):126-132.
DOI: https://doi.org/10.5781/KWJS.2012.30.6.612    Published online December 23, 2012.
A Study on Bead Geometry Prediction the GMA Fillet Welding using Genetic Algorithm
Young-Su Kim*, Ill-Soo Kim*, Ji-Hye Lee*, Sung-Myoung Jung*, Jong-Pyo Lee*, Min-Ho Park*, Reenal Ritesh Chand*
Correspondence:  Ill-Soo Kim,
Email: ilsookim@mokpo.ac.kr
Abstract
The GMA welding process involves large number of interdependent variables which may affect product quality, productivity and cost effectiveness. The relationships between process parameters for a fillet joint and bead geometry are complex because a number of process parameters are involved. To make the automated GMA welding, a method that predicts bead geometry and accomplishes the desired mechanical properties of the weldment should be developed. The developed method should also cover a wide range of material thicknesses and be applicable for all welding position. For the automatic welding system, the data must be available in the form of mathematical equations. In this study a new intelligent model with genetic algorithm has been proposed to investigate interrelationships between welding parameters and bead geometry for the automated GMA welding process. Through the developed model, the correlation between process parameters and bead geometry obtained from the actual experimental results, predicts that data did not show much of a difference, which means that it is quite suitable for the developed genetic algorithm. Progress to be able to control the process parameters in order to obtain the desired bead shape, as well as the systematic study of the genetic algorithm was developed on the basis of the data obtained through the experiments in this study can be applied. In addition, the developed genetic algorithm has the ability to predict the bead shape of the experimental results with satisfactory accuracy.
Key Words: GMA(Gas Metal Arc) welding, Multiple regression Analysis, Fillet welding, GA(Genetic algorithm)


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