Method to measure three dimensional specular surface of TIG weld pool based on dot-matrix laser pattern

doi:10.3901/JME.2014.24.010

	Method to measure three dimensional specular surface of TIG weld pool based on dot-matrix laser pattern
	Zhang, Gang 2; Shi, Yu 2; Huang, Jiankang 2; Zhang, Weijie 1; Fan, Ding 2
刊名	Jixie Gongcheng Xuebao/Journal of Mechanical Engineering
	2014-12-20
卷号	50 期号:24 页码:10-16
关键词	Electric welding Inert gases Free surfaces Geometry parameter Laser dot matrixes Specular reflections Three-dimensional measurements Threedimensional (3-d) Tungsten inert-gas arc welding Weld pool surfaces
ISSN号	05776686
DOI	10.3901/JME.2014.24.010
英文摘要	Measuring three dimensional (3D) weld pool surface of tungsten inert gas arc welding (TIG) has significance for investigating coupled mechanism between welding arc and weld pool, control of weld formation and weld joint penetration. However, the influence of strong arc light and the specular reflection of weld pool surface make the existed methods hardly applied to 3D measurement. To this end, a new sensing method is proposed, which utilizes the reflected property of weld pool surface. The mapping model between reflected and projected laser dots is analyzed and established. A new 3D reconstructed algorithm is proposed based on the renewed projected laser dots and the 3D TIG weld pool surface is achieved, also its geometry parameters, i.e., width and average height are extracted. Compared the measurement shows that the proposed method can measure the dynamical variation of weld pool surface, but also the reconstructed result coincides with the measurement well. The error of weld pool's width and height is 1.73% and 2.32%, respectively. To better investigate the evolution rule of TIG weld pool specular surface provides a new method. © 2014 Journal of Mechanical Engineering.
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/113514]
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.Center for Manufacturing, University of Kentucky, Lexington; 40506, United States 2.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals,Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Zhang, Gang,Shi, Yu,Huang, Jiankang,et al. Method to measure three dimensional specular surface of TIG weld pool based on dot-matrix laser pattern[J]. Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,2014,50(24):10-16.
APA	Zhang, Gang,Shi, Yu,Huang, Jiankang,Zhang, Weijie,&Fan, Ding.(2014).Method to measure three dimensional specular surface of TIG weld pool based on dot-matrix laser pattern.Jixie Gongcheng Xuebao/Journal of Mechanical Engineering,50(24),10-16.
MLA	Zhang, Gang,et al."Method to measure three dimensional specular surface of TIG weld pool based on dot-matrix laser pattern".Jixie Gongcheng Xuebao/Journal of Mechanical Engineering 50.24(2014):10-16.