Numerical analysis and experimental research on active infrared thermographic NDT in composite materials

Cui-qin Wu; Wei-ping Wang; Qi-gang Yuan; Yan-jun Li; Wei Zhang; Xiang-dong Zhang

doi:10.1117/12.898947

8 September 2011 Numerical analysis and experimental research on active infrared thermographic NDT in composite materials

Cui-qin Wu, Wei-ping Wang, Qi-gang Yuan, Yan-jun Li, Wei Zhang, Xiang-dong Zhang

Author Affiliations +

Proceedings Volume 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications; 81930L (2011) https://doi.org/10.1117/12.898947
Event: International Symposium on Photoelectronic Detection and Imaging 2011, 2011, Beijing, China

Abstract

To estimate the disbond defects of the glass fiber composite materials applied in the solid rocket motor, active infrared thermographic NDT is researched. Firstly, the numerical analysis of the transient thermal wave distubance under the pulse heating stimulation is carried out using the finite element method. Then, the special experiment is arranged. The specimen including 3 disbond defects with diameter 10mm, 20mm and 30mm is pulse heated using 2 symmetric pulse heating sources, which the stimulation time is 2ms and the pulse energy is 4800J. The surface transient temperature is monitored by the infrared camera system. Finally, The experimental results are compared with the ultrasonic C-scan. Our research shows that the infrared thermography is a fast and effective inspection method for detecting defects of the diameter over 10mm and depth within 5mm in the composite materials.

Citation Download Citation

Cui-qin Wu, Wei-ping Wang, Qi-gang Yuan, Yan-jun Li, Wei Zhang, and Xiang-dong Zhang "Numerical analysis and experimental research on active infrared thermographic NDT in composite materials", Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 81930L (8 September 2011); https://doi.org/10.1117/12.898947

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