Laser vision based detection and analysis of weld pool oscillation for pulsed GTAW

doi:10.3901/JME.2012.24.028

	Laser vision based detection and analysis of weld pool oscillation for pulsed GTAW
	Shi, Yu 1; Zhang, Gang 1; Ma, Xiaoji 2; Fan, Ding 1
刊名	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
	2012-12-20
卷号	48 期号:24 页码:28-32
关键词	Fast Fourier transforms Gas metal arc welding Gas welding Image processing MATLAB Welds Detecting methods Image processing algorithm Laser vision Oscillation characteristics Oscillation frequency Oscillation signals Penetration controls Pulsed gas tungsten arc welding
ISSN号	05776686
DOI	10.3901/JME.2012.24.028
英文摘要	There is a physical relationship between weld pool oscillation frequency and states of weld beam full penetration. But the detection of weld pool oscillation frequency is very hard. According to this problem, a new detecting and sensing method based laser vision for metal pool oscillation frequency is proposed. The method principle of laser vision is introduced and the experiment system of collecting weld pool oscillation signal for pulsed gas tungsten arc welding(GTAW) is designed. The video images which reflect weld pool oscillation variation are collected. An image processing algorithm used for dealing with the reflected laser lines image based Matlab software is designed and written, also weld pool oscillation waveform is captured by this algorithm. The weld pool oscillation characteristic frequency is extracted by Fast Fourier transform. The experimental results show that laser vision method not only can successfully accomplish detecting the oscillation frequency for pulsed GTAW, but also the defect of pre-detecting methods for pulsed GTAW weld pool oscillation which is not used for sequential welding is overcome. The oscillation characteristic frequency is detected by software system. The image processing algorithm elapses about time 20 ms and meet the real-time detecting requirement for metal pool oscillation. To further realize the continual pulsed GTAW penetration control laid a foundation.
语种	中文
出版者	Editorial Office of Chinese Journal of Mechanical Engineering
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111169]
专题	材料科学与工程学院省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China; 2.Center for Manufacturing, University of Kentucky, Lexington 40506, United States
推荐引用方式 GB/T 7714	Shi, Yu,Zhang, Gang,Ma, Xiaoji,et al. Laser vision based detection and analysis of weld pool oscillation for pulsed GTAW[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2012,48(24):28-32.
APA	Shi, Yu,Zhang, Gang,Ma, Xiaoji,&Fan, Ding.(2012).Laser vision based detection and analysis of weld pool oscillation for pulsed GTAW.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,48(24),28-32.
MLA	Shi, Yu,et al."Laser vision based detection and analysis of weld pool oscillation for pulsed GTAW".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 48.24(2012):28-32.