8 September 2011 Numerical analysis and experimental research on active infrared thermographic NDT in composite materials
Author Affiliations +
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.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Cui-qin Wu, Cui-qin Wu, Wei-ping Wang, Wei-ping Wang, Qi-gang Yuan, Qi-gang Yuan, Yan-jun Li, Yan-jun Li, Wei Zhang, Wei Zhang, Xiang-dong Zhang, 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); doi: 10.1117/12.898947; https://doi.org/10.1117/12.898947
PROCEEDINGS
6 PAGES


SHARE
Back to Top