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Pulsed thermography for the NDT of honeycomb composite
Author(s): Dapeng Chen; Jian Zhou; Zuoming Sun; Xiaoheng Wang
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Paper Abstract

Honeycomb sandwich Composite has wide applications in manufacture, such as aircraft, automobile, rail transit, and so on, due to its special advantages. However, defects always exist in the honeycomb composite during manufacturing and in-service period, liquid ingress and debondings are the most typical defects. In this paper, according to the NDT problem for this kind of material, Pulsed thermography is applied, theoretical model of heat conduction for the defect detection under an instantaneous heat source is analyzed; Several kinds of honeycomb composite specimen is designed for the two typical defects detection; Pulsed thermography is applied on the specimens and the defects are revealed by the thermal images sequence processing. Furthermore, by analyzing the logarithmic temperature decreasing curves can distinguish different types of liquids under the skin. Results show that Pulsed thermography has advantages for the NDT of honeycomb composite.

Paper Details

Date Published: 12 March 2019
PDF: 9 pages
Proc. SPIE 11023, Fifth Symposium on Novel Optoelectronic Detection Technology and Application, 110231H (12 March 2019); doi: 10.1117/12.2521627
Show Author Affiliations
Dapeng Chen, Science and Technology on Optical Radiation Lab. (China)
Jian Zhou, Science and Technology on Optical Radiation Lab. (China)
Zuoming Sun, Science and Technology on Optical Radiation Lab. (China)
Xiaoheng Wang, Science and Technology on Optical Radiation Lab. (China)


Published in SPIE Proceedings Vol. 11023:
Fifth Symposium on Novel Optoelectronic Detection Technology and Application
Qifeng Yu; Wei Huang; You He, Editor(s)

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