Identification of butt welded joint penetration based on infrared thermal imaging

Yu, Rongwei; Han, Jing; Bai, Lianfa; Zhao, Zhuang

doi:10.1016/j.jmrt.2021.03.075

Cited by 20 publications

(1 citation statement)

References 22 publications

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“…At present, scholars have conducted research on the real-time detection of penetration status based on different welding methods. These are mainly the arc sound method [2], temperature field method [3], oscillation frequency method [4], and visual sensing method [5]. Among them, the molten pool visual sensing method can simulate the visual observation of skilled welders, detect the surface molten pool in real time during welding, and not affect the welding process.…”

Section: Introductionmentioning

confidence: 99%

Online Monitoring and Control of Butt-Welded Joint Penetration during GMAW

Wang

Han

et al. 2022

Metals

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Butt welding is an important link to ensure welding quality, and the penetration state of the weld is the main criterion to achieve this. Online monitoring and control of the penetration state of welded joints is an important measure to ensure welding quality. The molten pool image is monitored by a visual sensor in the gas metal arc welding (GMAW) process, and the bottom molten pool width is predicted by the regression network model. Combined with the real-time control method, the welding current is changed to monitor and control the bottom weld width in real time. Butt-welding experiments with different groove angles verified that the proposed method could achieve satisfactory control accuracy and generalization ability. For butt-welding experiments with constant groove angles of 30° and 45°, the MAE of the controlled backside melt width to the target values was 0.2603 mm and 0.2620 mm. Therefore, it provides a feasible method for the online control of weld penetration.

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Section: Introductionmentioning

confidence: 99%