Analysis of Laser-Induced Plume During Disk Laser Welding at Different Speeds

WANG Teng (王腾); GAO Xiangdong (高向东); Katayama SEIJI

doi:10.1088/1009-0630/15/8/20

Plasma Science and Technology > 2013 > 15(8): 821-824. > DOI: 10.1088/1009-0630/15/8/20

WANG Teng (王腾), GAO Xiangdong (高向东), Katayama SEIJI. Analysis of Laser-Induced Plume During Disk Laser Welding at Different Speeds[J]. Plasma Science and Technology, 2013, 15(8): 821-824. DOI: 10.1088/1009-0630/15/8/20

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Analysis of Laser-Induced Plume During Disk Laser Welding at Different Speeds

1 School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China 2 School of Computer, South China Normal University, Guangzhou 510631, China 3 Joining and Welding Research Institute, Osaka University, Osaka 567-0047, Japan

Funds: supported by National Natural Science Foundation of China (No.51175095), the Guangdong Provincial Natural Science Foundation of China (Nos.10251009001000001, 9151009001000020) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (No.20104420110001)

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Received Date: March 06, 2012

Graphical Abstract

Abstract

Abstract

During high power disk laser welding, the high-speed photography was used to measure the dynamic images of the laser-induced plume at different laser welding speeds. Various plume features (area, height and brightness) were extracted from the images by the color space clustering algorithm. Combined with observation on the surface and the cross sections of welding samples, the effect of welding speed on welding stability was analyzed. From the experimental results, it was found that these features of plume could reflect the welding state. Thus changes of the plume features corresponded to different welding speeds, which was helpful for monitoring the laser welding stability.
- disk laser welding,
- laser-induced plume,
- stability,
- high-speed photography,
- different welding speeds

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