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Proceedings Paper

Integration of infrared and optical imaging techniques for the nondestructive inspection of aeronautic parts
Author(s): F. López; S. Sfarra; C. Ibarra-Castanedo; D. Paoletti; X. Maldague
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Paper Abstract

This work focuses in the implementation of infrared and optical imaging techniques for the inspection of aeronautics parts. To this aim, a helicopter blade with known defects is inspected with four different techniques: long pulse thermography, pulsed thermography, digital speckle photography (DSP) and holographic interferometry (HI). The first two techniques belongs to the group of infrared imaging techniques, which are based on the analysis of the infrared thermal patterns in order to detect internal anomalies in the material; whilst the last two (DSP and HI) corresponds to the optical imaging techniques which make use of visible light to measure the material response to an applied stress. Both techniques were applied using the active approach, i.e. an external stimulation is applied in order to produce a gradient in either, the thermal and/or displacement field of the material. The results are then compared in order to evaluate the advantages and limitations of each technique.

Paper Details

Date Published: 12 May 2015
PDF: 8 pages
Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 948506 (12 May 2015); doi: 10.1117/12.2177259
Show Author Affiliations
F. López, Univ. Laval (Canada)
S. Sfarra, Univ. degli Studi dell'Aquila (Italy)
C. Ibarra-Castanedo, Univ. Laval (Canada)
D. Paoletti, Univ. degli Studi dell'Aquila (Italy)
X. Maldague, Univ. Laval (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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