Design of visualization systems for terahertz non destructive testing

ZHOU Yu; WANG Tianyi; LI Wenjun; YOU Chengwu; YANG Zhengang; WANG Kejia; LIU Jinsong

doi:10.7510/jgjs.issn.1001-3806.2017.03.010

LASER TECHNOLOGY > 2017 > 41(3): 351-355. > DOI: 10.7510/jgjs.issn.1001-3806.2017.03.010

ZHOU Yu, WANG Tianyi, LI Wenjun, YOU Chengwu, YANG Zhengang, WANG Kejia, LIU Jinsong. Design of visualization systems for terahertz non destructive testing[J]. LASER TECHNOLOGY, 2017, 41(3): 351-355. DOI: 10.7510/jgjs.issn.1001-3806.2017.03.010

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Design of visualization systems for terahertz non destructive testing

Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, China

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Received Date: June 21, 2016
Revised Date: July 20, 2016
Published Date: May 24, 2017

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In order to improve the validity and reliability of terahertz non destructive testing (NDT), a set of visualization system for terahertz NDT was set up. Terahertz frequency modulation continuous wave imaging devices was adopted to collect data, MATLAB-graphical user interface (GUI) was used to develop a set of visualization software platform integrating function such as image processing and 3-D reconstruction. After the analysis of the data, the prototype system was used to detect polymer insulation tiles with the containing of internal metal. The results show that the terahertz NDT visualization system is constructed to observe the internal structure of polymer insulation tile effectively, and then by using the internal image of software platform, after reasonable analysis and algorithm processing, the size and shape of the embedded metal defects are displayed directly on the computer. The accuracy of non-destructive testing is increased, and the difficulty of terahertz nondestructive testing and data analysis duration are decreased.
- laser technique,
- imaging system,
- non destructive testing,
- image processing,
- MATLAB-graphical user interface

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