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Proceedings Paper

Infrared thermography and ultrasound C-scan for non-destructive evaluation of 3D carbon fiber materials: a comparative study
Author(s): Hai Zhang; Marc Genest; Francois Robitaille; Xavier Maldague; Lucas West; Simon Joncas; Catherine Leduc
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Paper Abstract

3D Carbon fiber polymer matrix composites (3D CF PMCs) are increasingly used for aircraft construction due to their exceptional stiffness and strength-to-mass ratios. However, defects are common in the 3D combining areas and are challenging to inspect. In this paper, Stitching is used to decrease these defects, but causes some new types of defects. Infrared NDT (non-destructive testing) and ultrasound NDT are used. In particular, a micro-laser line thermography technique (micro-LLT) and a micro-laser spot thermography (micro-LST) with locked-in technique are used to detect the micro-defects. In addition, a comparative study is conducted by using pulsed thermography (PT), vibrothermography (VT). In order to confirm the types of the defects, microscopic inspection is carried out before NDT work, after sectioning and polishing a small part of the sample..

Paper Details

Date Published: 12 May 2015
PDF: 15 pages
Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 94850X (12 May 2015); doi: 10.1117/12.2176853
Show Author Affiliations
Hai Zhang, Univ. Laval (Canada)
Marc Genest, National Research Council Canada (Canada)
Francois Robitaille, Univ. of Ottawa (Canada)
Xavier Maldague, Univ. Laval (Canada)
Lucas West, Univ. of Ottawa (Canada)
Simon Joncas, École de Technologie Supérieure (Canada)
Catherine Leduc, École de Technologie Supérieure (Canada)

Published in SPIE Proceedings Vol. 9485:
Thermosense: Thermal Infrared Applications XXXVII
Sheng-Jen (Tony) Hsieh; Joseph N. Zalameda, Editor(s)

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