A diagnosis model for appearance defects of joints in RSW

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	A diagnosis model for appearance defects of joints in RSW
	Zhang, Pengxian 1,2; Zhang, Zhifen 1,2; Chen, Jianhong 1,2; Wang, Xiaoe 1
刊名	Hanjie Xuebao/Transactions of the China Welding Institution
	2011-04-01
卷号	32 期号:4 页码:5-8
关键词	Binary images Joints (structural components) Pattern recognition Spot welding Support vector machines Appearance qualities Characteristic parameters Evaluation modeling Image information Resistance spot welding Sources of informations Verification results Welding parameters
ISSN号	0253360X
英文摘要	The weld metal expulsion and sticking electrode are the main factors which cause the occurrence of substandard appearance quality of joints in resistance spot welding. The digital images obtained from the appearance of welding joints were used as sources of information. First, through the analysis of images in which expulsion and sticking occurred during the welding process, the perimeter L, area S0, elongation A and density C were selected as the parameters to reflect the characteristic of the binary image of the joints. Second, the law between the four parameters and welding parameters was revealed based on a lot of experiments. The three parameters of L, S0 and A were extracted as the characteristic parameters to identify appearance defects of the joints. On the basis, an evaluation model was established for the appearance defects of the joints based on support vector machine. At last, the actual verification results showed that the evaluation model can diagnose the appearance defects caused by expulsion and sticking electrode, and its accuracy can reach up to 96.67%.
语种	中文
出版者	Harbin Research Institute of Welding
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/111277]
专题	省部共建有色金属先进加工与再利用国家重点实验室材料科学与工程学院
作者单位	1.Key Laboratory of Non-ferrous Metal Alloys, Lanzhou University of Technology, Lanzhou 730050, China; 2.State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China
推荐引用方式 GB/T 7714	Zhang, Pengxian,Zhang, Zhifen,Chen, Jianhong,et al. A diagnosis model for appearance defects of joints in RSW[J]. Hanjie Xuebao/Transactions of the China Welding Institution,2011,32(4):5-8.
APA	Zhang, Pengxian,Zhang, Zhifen,Chen, Jianhong,&Wang, Xiaoe.(2011).A diagnosis model for appearance defects of joints in RSW.Hanjie Xuebao/Transactions of the China Welding Institution,32(4),5-8.
MLA	Zhang, Pengxian,et al."A diagnosis model for appearance defects of joints in RSW".Hanjie Xuebao/Transactions of the China Welding Institution 32.4(2011):5-8.