Broadband stepped-frequency modulated continuous terahertz wave tomography for non-destructive inspection of polymer materials

doi:10.1016/j.polymertesting.2019.04.001

	Broadband stepped-frequency modulated continuous terahertz wave tomography for non-destructive inspection of polymer materials
	Zhang, Xiaoxuan 3; Guo, Qijia 3; Chang, Tianying 2,3; Cui, Hong-Liang1,3
刊名	POLYMER TESTING
	2019-07-01
卷号	76 页码:455-463
关键词	Internal nondestructive testing Polymer Tomography Stepped-frequency modulated continuous terahertz wave 3D reconstruction algorithm
ISSN号	0142-9418
DOI	10.1016/j.polymertesting.2019.04.001
通讯作者	Chang, Tianying(tchang@jlu.edu.cn)
英文摘要	An all-solid-state electronic three-dimensional terahertz tomography system designed specifically for non-destructive inspection of polymer materials is demonstrated, which is capable of determining the positions and shapes of hidden defects accurately. The imaging radar system, based on stepped-frequency modulated continuous wave (SFMCW), with center frequency at 180 GHz, bandwidth of 60 GHz, and average power 0.5 mW, is tested against thick Teflon (polytetrafluoroethylene, PTFE) plates with internal voids as samples. The locations and shapes of the hidden holes are obtained in both electromagnetic simulation and experimental measurements with a three-dimensional image reconstruction algorithm, which features advantages of accurate reconstructed image details and fast computation speed, demonstrating that the terahertz imaging radar system combined with the algorithm developed is capable of detecting internal defects of thick polymers. Key resolution parameters are established experimentally in detail, demonstrating 2.5 mm and 1.7 mm range resolutions in free space and in Teflon separately, and lateral spot diameters ranging from 3.4 mm to 8 mm at imaging distances from 5 mm to 60 mm.
资助项目	National Natural Science Foundation of China[61875196] ; National Natural Science Foundation of China[61705120] ; Ministry of Science and Technology of the Peoples Republic of China[2015CB755401] ; Department of Science and Technology of Shandong Province[2017GSF20114] ; Department of Science and Technology of Shandong Province[2018GGX101043] ; Innovation Program of Shandong Academy of Science
WOS研究方向	Materials Science ; Polymer Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000479182700049
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9527]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Chang, Tianying
作者单位	1.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 2.Qilu Univ Technol, Shandong Acad Sci, Inst Automat, Jinan 250014, Shandong, Peoples R China 3.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130012, Jilin, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaoxuan,Guo, Qijia,Chang, Tianying,et al. Broadband stepped-frequency modulated continuous terahertz wave tomography for non-destructive inspection of polymer materials[J]. POLYMER TESTING,2019,76:455-463.
APA	Zhang, Xiaoxuan,Guo, Qijia,Chang, Tianying,&Cui, Hong-Liang.(2019).Broadband stepped-frequency modulated continuous terahertz wave tomography for non-destructive inspection of polymer materials.POLYMER TESTING,76,455-463.
MLA	Zhang, Xiaoxuan,et al."Broadband stepped-frequency modulated continuous terahertz wave tomography for non-destructive inspection of polymer materials".POLYMER TESTING 76(2019):455-463.