Analysis of Welding Stability Based on Plume Images during High-power Disc Laser Welding
During the high-power disc laser welding,metal vapor plume is the important phenomenon and contains a lot of information that related to the welding quality.This paper researches a method for analyzing the welding stabilty by monitoring the plume during the welding of stainless steel 304.In the high-power disc laser welding,a high-speed camera was used to capture the ultraviolet band and visible band meal vapor plume images.The information entropy and area ratio were defined as the characteristic parameters of plume to determine the stability of welding.Image algorithms such as Wiener filtering,dynamic threshold segmentation,mathematical morphology were applied to obtain the characteristic parameter curves in the welding process.Welding experimental results showed that the proposed characteristic parameters could accurately reflect the welding stability status of high-power disc laser welding process.
High-power disc Laser Welding Metal vapor plume Information entropy
LIU Yingying GAO Xiangdong WEN Qian
School of Electromechanical Engineering,Guangdong University of Technology,No.100 West Waihuan Road,Higher Education Mega Center,Panyu District,Guangzhou 510006,China
国际会议
沈阳
英文
1205-1208
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）