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

作　　者：王腾 高向东 Katayama SEIJI 

机构地区：[1]School of Electromechanical Engineering,Guangdong University of Technology [2]School of Computer,South China Normal University [3]Joining and Welding Research Institute,Osaka University

出　　处：《Plasma Science and Technology》2013年第8期821-824,共4页等离子体科学和技术（英文版）

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

摘　　要：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.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.

关 键 词：disk laser welding laser-induced plume STABILITY high-speed photography different welding speeds 

分 类 号：TP333.35[自动化与计算机技术—计算机系统结构] TG456.7[自动化与计算机技术—计算机科学与技术]