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	Ultrasonic Imaging Technique of Spot Weld Structure for a High Strength Galvanized Steel Sheet
	Chen, Zhenhua ; Shi, Yaowu ; Zhao, Haiyan
	2010-10-12 ; 2010-10-12
关键词	ultrasonic C-scan spot weld defects FRACTURE QUALITY Materials Science, Characterization & Testing
中文摘要	In this paper, ultrasonic C-scan imagery technique is applied to measure the nugget diameter and image the defects in a spot weld of a high strength galvanized steel sheet. In order to enhance the test precision, the ultrasonic C-scan image is divided into six characteristic color regions and the related A-scan signals are analyzed according to the structural characteristics of the high strength galvanized steel spot weld. The results indicate that the nugget diameter can be measured accurately, and the shape of inner defects of nugget is evaluated based on the C-scan image and the time domain analysis of A-scan signal. The method proposed in the research is not only a comprehensive and visualized method for spot welding evaluation, but also a kind of important auxiliary method for spot weld research since the inner structure of the spot weld can be investigated without devastating it.
语种	英语 ; 英语
出版者	AMER SOC TESTING MATERIALS ; W CONSHOHOCKEN ; 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/80552]
专题	清华大学
推荐引用方式 GB/T 7714	Chen, Zhenhua,Shi, Yaowu,Zhao, Haiyan. Ultrasonic Imaging Technique of Spot Weld Structure for a High Strength Galvanized Steel Sheet[J],2010, 2010.
APA	Chen, Zhenhua,Shi, Yaowu,&Zhao, Haiyan.(2010).Ultrasonic Imaging Technique of Spot Weld Structure for a High Strength Galvanized Steel Sheet..
MLA	Chen, Zhenhua,et al."Ultrasonic Imaging Technique of Spot Weld Structure for a High Strength Galvanized Steel Sheet".(2010).

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