Infrared thermography, ultrasound C-scan and microscope for non-destructive and destructive evaluation of 3D carbon fiber materials: a comparative study

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1117/12.2176853
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Name affiliation
  1. National Research Council of Canada. Aerospace
FormatText, Article
Proceedings titleThermosense: Thermal Infrared Applications XXXVII
Series titleProceedings of SPIE; no. 9485
ConferenceSPIE Sensing Technology + Applications, 20 April 2015, Baltimore, Maryland, United States
Article number94850X
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.
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LanguageEnglish
Peer reviewedYes
NPARC number23001543
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