Comparison between thermographic and holographic techniques for nondestructive testing of composites: similarities, differences and potential cross-fertilization

Marc P. Georges

doi:10.1117/12.2203109

24 August 2015 Comparison between thermographic and holographic techniques for nondestructive testing of composites: similarities, differences and potential cross-fertilization

Marc P. Georges

Author Affiliations +

Proceedings Volume 9660, SPECKLE 2015: VI International Conference on Speckle Metrology; 966002 (2015) https://doi.org/10.1117/12.2203109
Event: SPECKLE 2015: VI International Conference on Speckle Metrology, 2015, Guanajuato, Mexico

Abstract

Thermography and different variants of holography (holographic interferometry, speckle interferometry, shearography) are full-field non-contact techniques which are used in nondestructive testing applications. In particular they are attractive for damage detection in composite materials compared to other methods measuring in one point and which require scanning and contact with the samples, like ultrasounds. Currently thermography is a step forward compared to holographic techniques for this application. Indeed it is easier to interpret. Many thermography configurations and variants exist, from exciting sources to post-processing. Such a variety exists also among the holographic techniques but to a less extent. We will see how these techniques can share some aspects and what distinguish them. Also the complementarity of both will be addressed and how to combine them. At last we will discuss how processing developed for thermography can benefit to holography and vice-versa, specifically in the domain of composite materials.

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Marc P. Georges "Comparison between thermographic and holographic techniques for nondestructive testing of composites: similarities, differences and potential cross-fertilization", Proc. SPIE 9660, SPECKLE 2015: VI International Conference on Speckle Metrology, 966002 (24 August 2015); https://doi.org/10.1117/12.2203109

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