Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars

doi:10.11900/0412.1961.2022.00095

IMR OpenIR

	Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars
	Li Zhenjie 1,2; Cai Guixi 1; Zhang Bo 1; Li Jingming 1; Li Jiankui 1
通讯作者	Cai Guixi(gxcai@imr.ac.cn)
	2024-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	60 期号:4 页码:559-568
摘要	Spiral scanning mode, where ultrasonic probes relatively rotate forward around a tested bar, is commonly used in an automatic ultrasonic testing system for metal bar quality control. Current non-destructive testing standards for bars with ultrasonic technology specify that whether the bar is rejected or accepted should be made in accordance with the amplitude of the echo from a defect in the bar. The quality information obtained by the abovementioned standard testing procedure is only the echo from the defect, and it is too simple to characterize the defect in detail and accurately. Therefore, inspection using imagery and quantitative nondestructive testing (QNDT) of bar quality is the development trend of bar quality control technology in the future. In achieving QNDT of metal round bars, a synthetic aperture focusing on imaging algorithm in a polar coordinate system (pSAFT) and its surrounding scan-mode time-domain synthetic aperture focusing technology (ST-SAFT) were proposed in accordance with the classical ultrasonic synthetic aperture focusing technology (SAFT) theory on a Cartesian coordinate system. Based on the signal set collected by the spiral scanning automatic detection system, the formula of time-delay superposition imaging expressed by the effective synthetic aperture radian was deduced to image the defects in the bar with a cross-sectional view. By preparing a transverse-hole artificial defect sample for the testing experiment, ultrasonic testing data were processed by ST-SAFT, and then a circular section tomography was imaged. Image edge recognition was used to quantitatively evaluate the sizing ability and positioning resolution of ST-SAFT for defect detection. Experimental results show that the measured value of artificial defects with ST-SAFT is equivalent to the real value; the positioning of the transverse side-drilled hole is accurate, and the imaging resolution is significantly better than that of B-scan. The imaging speed for each circular section can reach the order of milliseconds, which can match the mechanical scanning speed of bar inspection for one circle. Therefore, this technology can be used to improve the technical level of ultrasonic automatic testing equipment for metal round bars and ensure safety of the application of metal round bars.
关键词	quality control for bar ultrasonic testing surrounding-scan-mode time-domain synthetic aperture focusing technology (ST-SAFT) spiral scanning circular section tomography
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province
DOI	10.11900/0412.1961.2022.00095
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51605468] ; National Natural Science Foundation of China[31702393] ; Natural Science Foundation of Liaoning Province
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001208569500014
出版者	SCIENCE PRESS
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/185863
专题	中国科学院金属研究所
通讯作者	Cai Guixi
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li Zhenjie,Cai Guixi,Zhang Bo,et al. Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars[J]. ACTA METALLURGICA SINICA,2024,60(4):559-568.
APA	Li Zhenjie,Cai Guixi,Zhang Bo,Li Jingming,&Li Jiankui.(2024).Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars.ACTA METALLURGICA SINICA,60(4),559-568.
MLA	Li Zhenjie,et al."Synthetic Aperture Imaging Technology for Ultrasonic Spiral Scanning Detection of Metal Bars".ACTA METALLURGICA SINICA 60.4(2024):559-568.