Lock-in thermography method for the NDT of composite materials

Yanguang Zhao; Xinglin Guo; Mingfa Ren; Xiaogang Wang; YuNan He

doi:10.1117/12.839270

25 August 2009 Lock-in thermography method for the NDT of composite materials

Yanguang Zhao, Xinglin Guo, Mingfa Ren, Xiaogang Wang, YuNan He

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73753V (2009) https://doi.org/10.1117/12.839270
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

In this paper, the non-destructive testing process of lock-in thermography to some typical defects cases, including the composite with holes or ribs on its back, or inside with multi layers, air holes or defect, is simulated on the basis of the finite element method by ANSYS software. The results are also validated using the infrared thermography system developed by Cedip company. According to different defects type, different methods are given. In addition, influences of loading time, testing frequency, data processing and curved face on the non-destructive testing are also discussed in this paper. The results show that the finite element method can simulate the non-destructive testing process of lock-in thermography well. So the finite element method has obviously instructive effect on the selection of experiment parameters as well as can improve the testing efficiency.

Citation Download Citation

Yanguang Zhao, Xinglin Guo, Mingfa Ren, Xiaogang Wang, and YuNan He "Lock-in thermography method for the NDT of composite materials", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73753V (25 August 2009); https://doi.org/10.1117/12.839270

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