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Advances in Manufacturing

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01-01-2021

Investigation into keyhole-weld pool dynamic behaviors based on HDR vision sensing of real-time K-TIG welding process through a steel/glass sandwich

Authors: Yan-Xin Cui, Yong-Hua Shi, Qiang Ning, Yun-Ke Chen, Bao-Ri Zhang

Published in: Advances in Manufacturing | Issue 1/2021

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Abstract

To obtain a deep insight into keyhole tungsten inert gas welding, it is necessary to observe the dynamic behavior of the weld pool and keyhole. In this study, based on the steel/glass sandwich and high dynamic range camera, a vision system is developed and the keyhole-weld pool profiles are captured during the real-time welding process. Then, to analyze the dynamic behavior of the weld pool and keyhole, an image processing algorithm is proposed to extract the compression depth of the weld pool and the geometric parameters of the keyhole from the captured images. After considering the variations of these parameters over time, it was found that the front and rear lengths of the keyhole were dynamically adjusted internally and had opposite trends according to the real-time welding status while the length of the keyhole was in a quasi-steady state. The proposed vision-based observation method lays a solid foundation for studying the weld forming process and improving keyhole tungsten inert gas welding.

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Title: Investigation into keyhole-weld pool dynamic behaviors based on HDR vision sensing of real-time K-TIG welding process through a steel/glass sandwich
Authors: Yan-Xin Cui
Yong-Hua Shi
Qiang Ning
Yun-Ke Chen
Bao-Ri Zhang
Publication date: 01-01-2021
Publisher: Shanghai University
Published in: Advances in Manufacturing / Issue 1/2021
Print ISSN: 2095-3127
Electronic ISSN: 2195-3597
DOI: https://doi.org/10.1007/s40436-020-00335-w

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