Investigation of crack initiation with a three color digital holographic interferometer

Mayssa Karray; Christophe Poilane; Denis Mounier; Mohamed Gargoury; Pascal Picart

doi:10.1117/12.976047

11 September 2012 Investigation of crack initiation with a three color digital holographic interferometer

Mayssa Karray, Christophe Poilane, Denis Mounier, Mohamed Gargoury, Pascal Picart

Proceedings Volume 8413, Speckle 2012: V International Conference on Speckle Metrology; 841311 (2012) https://doi.org/10.1117/12.976047
Event: SPECKLE 2012: V International Conference on Speckle Metrology, 2012, Vigo, Spain

Abstract

This paper proposes a three-color holographic interferometer devoted to the deformation analysis of a composite material submitted to a short beam shear test. The simultaneous recording of three laser wavelengths using a triple CCD sensor results in the evaluation of shear strains at the lateral surface of the sample. Such an evaluation provides a pertinent parameter to detect premature crack in the structure, long before it becomes visible on the real time stress/strain curve, or with a classical microscope.

Citation Download Citation

Mayssa Karray, Christophe Poilane, Denis Mounier, Mohamed Gargoury, and Pascal Picart "Investigation of crack initiation with a three color digital holographic interferometer", Proc. SPIE 8413, Speckle 2012: V International Conference on Speckle Metrology, 841311 (11 September 2012); https://doi.org/10.1117/12.976047

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