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Proceedings Paper

Depth assessment of defects in composite plates combining shearography and vibration excitation
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Paper Abstract

This paper presents an investigation on the applicability of shearography to characterize the location and depth of defects in composite materials. Sets of specimens with artificial square flaws between the layers of a composite material have been used for the experiments. Flaws with different sizes were placed at different depths along the thickness of the material. Time-Average and Stroboscopic laser illumination have been applied together with vibrational loading. The resonance frequencies were related to the depths of the different faults sizes. Frequency x depth results showed good behavior for different defect sizes. These results encourages to further studies with other types of faults and composite materials.

Paper Details

Date Published: 13 September 2010
PDF: 9 pages
Proc. SPIE 7387, Speckle 2010: Optical Metrology, 73871Z (13 September 2010); doi: 10.1117/12.871200
Show Author Affiliations
Juliana Schöntag, Univ. Federal de Santa Catarina (Brazil)
Daniel Willemann, Univ. Federal de Santa Catarina (Brazil)
Armando Albertazzi Gonçalves Jr., Univ. Federal de Santa Catarina (Brazil)

Published in SPIE Proceedings Vol. 7387:
Speckle 2010: Optical Metrology
Armando Albertazzi Goncalves Jr.; Guillermo H. Kaufmann, Editor(s)

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