A Study on Real-time Prediction of Bead Width on GMA Welding

Son, Joon-Sik; Kim, Ill-Soo; Kim, Hak-Hyoung

Journal of KWJS 2007;25(5):64-70.
Published online January 28, 2008.

GMA 용접에서 실시간 비드폭 예측에 관한 연구

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A Study on Real-time Prediction of Bead Width on GMA Welding

Joon-Sik Son, Ill-Soo Kim, Hak-Hyoung Kim

Abstract

Recently, several models to control weld quality, productivity and weld properties in arc welding process have been developed and applied. Also, the applied model to make effective use of the robotic GMA(Gas Metal Arc) welding process should be given a high degree of confidence in predicting the bead dimensions to accomplish the desired mechanical properties of the weldment. In this study, a development of the on-line learning neural network models that investigate interrelationships between welding parameters and bead width as well as apply for the on-line quality control system for the robotic GMA welding process has been carried out. The developed models showed an excellent predicted results comparing with the predicted ability using off-line learning neural network. Also, the system will extend to other welding process and the rule-based expert system which can be incorporated with integration of an optimized system for the robotic welding system.

Key Words: Real-time monitoring, GMA welding, Neural network, Welding quality