Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy

doi:10.1155/2020/6622047

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy
	Li, Wenchao 1; Chang, Junjie 1; Li, Wentao 3; Long, Xiaoyun 2
刊名	Journal of Sensors
	2020
卷号	2020
关键词	Acoustic fields Focusing Manufacture Titanium alloys Transducers
ISSN号	1687725X
DOI	10.1155/2020/6622047
英文摘要	The ultrasonic annular array transducer usually has a stronger focusing acoustic field than the linear array and matrix transducer with the same number of array elements, and is more suitable for the detection of large thickness and high attenuation components. However, due to the special arrangement of array elements, the focusing beam cannot be deflected and has a large near field, which limits its application in practical detection. The element parameters of annular array transducer are often designed and analyzed according to the 2-D acoustic field model of a linear array transducer. Therefore, the 3-D acoustic field distribution model of the annular array transducer is established, and the influence of the element parameters on its spatial acoustic field focusing characteristics is analyzed. The design criteria of the array element division mode and element size are proposed, which can avoid the generation of high-energy side lobe and grating lobe, and have good axial acoustic field. Then, the influence of excitation aperture on the energy and size of focal spot at different depths is discussed. The dynamic focusing method with variable aperture of annular array is established, and the C-scan detection experiment is carried out on the addictive manufacturing titanium alloy specimen. The detection results show that the variable aperture method has better central amplitude consistency and imaging accuracy for different depth defects, and has better near surface detection ability than the fixed aperture method. © 2020 Wenchao Li et al.
WOS研究方向	Engineering ; Instruments & Instrumentation
语种	英语
出版者	Hindawi Limited
WOS记录号	WOS:000610153500001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/151210]
专题	机电工程学院
作者单位	1.Key Lab of Nondestructive Testing, Ministry of Education, Nanchang Hangkong University, Nanchang; 330063, China; 2.College of Information Engineering, Nanchang University, Nanchang; 330031, China 3.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Li, Wenchao,Chang, Junjie,Li, Wentao,et al. Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy[J]. Journal of Sensors,2020,2020.
APA	Li, Wenchao,Chang, Junjie,Li, Wentao,&Long, Xiaoyun.(2020).Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy.Journal of Sensors,2020.
MLA	Li, Wenchao,et al."Variable Aperture Method of Ultrasonic Annular Array for the Detection of Addictive Manufacturing Titanium Alloy".Journal of Sensors 2020(2020).