Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process

doi:10.1016/j.jmapro.2017.08.011

	Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process
	Li, Chunkai1,2 ; Shi, Yu1 ; Du, Leiming 2; Gu, Yufen1 ; Zhu, Ming1
	2017-10
发表期刊	JOURNAL OF MANUFACTURING PROCESSES
ISSN	1526-6125
卷号	29 页码:419-426
摘要	Real-time measurement and controlling the degree of weld penetration is a key issue in developing intelligent welding machines. To a certain extent, these welding machines can perform in a manner similar to that of a skilled human welder. The oscillation frequency of weld pool is closely related to weld penetration. However, traditional methods, such as arc voltage and arc light, lack the fundamentals to measure the oscillation frequency accurately. To solve this problem, a real-time sensing system based on photoelectric conversion is proposed for pulsed gas tungsten arc welding process. This sensing system consists of an illumination laser and a photoelectric conversion chamber. The illumination laser with five-line pattern is projected onto the whole possible pool surface and its reflection is captured by the photoelectric conversion chamber. By observing and analyzing the variation of voltage from the photoelectric conversion chamber, we found that the voltage variation is strongly related to the weld pool oscillation. Several experiments with different penetration for stationary and traveling weld pool were conducted, and the oscillation frequency was extracted. Experimental results show that the weld pool oscillation frequency can be measured in real time using this method. In comparison with the image laser-vision method proposed in our previous work, the laser-photoelectric-conversion method has the advantages of high sampling rate, high processing speed, device simplicity, and ability to completely meet the requirement of real-time measurement in actual welding process. The oscillation frequency of partial penetration is considerably higher than the oscillation frequency of full penetration and that an abrupt transition occurs. This abrupt transition in oscillation frequency can be used for monitoring and in-process control of the weld penetration. (C) 2017 Published by Elsevier Ltd on behalf of The Society of Manufacturing Engineers.
关键词	photoelectric conversion GTAW-P Real-time measurement Laser vision
DOI	10.1016/j.jmapro.2017.08.011
收录类别	SCI ; SCIE
语种	英语
资助项目	National Natural Science Foundation of China[51765037] ; Plan for Basic Research Creative Group of Gansu Province[17JR5RA107] ; Hong Liu Outstanding Talent Training Plan of Lanzhou University of Technology of China[J201201]
WOS研究方向	Engineering
WOS类目	Engineering, Manufacturing
WOS记录号	WOS:000413386000038
出版者	ELSEVIER SCI LTD
EI入藏号	20173704155349
EI主题词	Gas welding
EI分类号	538.2 Welding - 538.2.1 Welding Processes - 701.1 Electricity: Basic Concepts and Phenomena - 943.3 Special Purpose Instruments
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/33070
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
通讯作者	Shi, Yu
作者单位	1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China; 2.Lanzhou Univ Technol, Minist Educ, Key Lab Nonferrous Met Alloys & Proc, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室; 兰州理工大学
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Li, Chunkai,Shi, Yu,Du, Leiming,et al. Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process[J]. JOURNAL OF MANUFACTURING PROCESSES,2017,29:419-426.
APA	Li, Chunkai,Shi, Yu,Du, Leiming,Gu, Yufen,&Zhu, Ming.(2017).Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process.JOURNAL OF MANUFACTURING PROCESSES,29,419-426.
MLA	Li, Chunkai,et al."Real-time Measurement of Weld Pool Oscillation Frequency in GTAW-P Process".JOURNAL OF MANUFACTURING PROCESSES 29(2017):419-426.

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