Infrared nondestructive testing technology for multilayer metal structures

Xiang-Yu Wang; Xue Yang; Wei Fang; Gang-Bo Hu; Ning Tao; Cun-Lin Zhang

doi:10.1117/12.2602663

9 October 2021 Infrared nondestructive testing technology for multilayer metal structures

Xiang-Yu Wang, Xue Yang, Wei Fang, Gang-Bo Hu, Ning Tao, Cun-Lin Zhang

Proceedings Volume 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII; 119061A (2021) https://doi.org/10.1117/12.2602663
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

With the continuous progress of modern industry, the traditional nondestructive testing methods cannot meet the growing demand. At present, as a novel approach, the thermography non-destructive testing (TNDT) technology has been widely used in various industrial fields. In this paper, we present the study of a three-layer "metal-air-metal" structure, firstly through the modeling by finite element analysis software COMSOL Multiphysics, and then under the laboratory conditions using flash lamp as excitation methods for TNDT. Based on the preliminary simulation and experimental results , it is proved that it is possible to detect the bottom layer defects with a certain aspect ratio in the multilayer structure. It has practical significance in many scenarios, such as the locating the rivet holes under aircraft skin, the detection of defects below insulation layer and tomographic inspection of post-impact multilayer composites.

Citation Download Citation

Xiang-Yu Wang, Xue Yang, Wei Fang, Gang-Bo Hu, Ning Tao, and Cun-Lin Zhang "Infrared nondestructive testing technology for multilayer metal structures", Proc. SPIE 11906, Infrared, Millimeter-Wave, and Terahertz Technologies VIII, 119061A (9 October 2021); https://doi.org/10.1117/12.2602663

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