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Advances in Optical Technologies
Volume 2013 (2013), Article ID 314906, 13 pages
Research Article

In Search of Early Time: An Original Approach in the Thermographic Identification of Thermophysical Properties and Defects

1Composite Materials and Systems Department, ONERA, BP 72, 92322 Châtillon Cedex, France
2TREFLE Department, ENSAM, Institute of Mechanics and Engineering of Bordeaux (I2M), Esplanade des Arts et Métiers, 33405 Talence Cedex, France

Received 11 August 2012; Accepted 25 November 2012

Academic Editor: Carlo Corsi

Copyright © 2013 Daniel L. Balageas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Active thermography gives the possibility to characterize thermophysical properties and defects in complex structures presenting heterogeneities. The produced thermal fields can be rapidly 3D. On the other hand, due to the size of modern thermographic images, pixel-wise data processing based on 1D models is the only reasonable approach for a rapid image processing. The only way to conciliate these two constraints when dealing with time-resolved experiments lies in the earlier possible detection/characterization. This approach is illustrated by several different applications and compared to more classical methods, demonstrating that simplicity of models and calculations is compatible with efficient and accurate identifications.