Thermally induced deformations measured by shearography

Khaled Habib

doi:10.1117/12.555969

2 August 2004 Thermally induced deformations measured by shearography

Khaled Habib

Proceedings Volume 5532, Interferometry XII: Applications; (2004) https://doi.org/10.1117/12.555969
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

In the present work, the thermo-mechanical behavior, temperature versus thermal deformation with respect to time, of different coating films were studied by a non-destructive technique (NDT) known as shearography. Organic coatings, i.e., Epoxy, on metallic alloys, i.e., carbon steels, were investigated at a temperature range simulating the severe weather temperatures in Kuwait especially between the daylight and the night time temperatures. The investigation focused on determining the in-plane displacement of the coatings, which amounts to the thermal deformation and stress with respect to temperature and time. Along with the experimental data, a mathematical relationship was derived describing the thermal deformation and stress of a coating film as a function of temperature. Furthermore, results of shearography indicate that the technique is very useful NDT method not only for determining the thermo-mechanical behavior of different coatings, but also the technique can be used as a 2D-microscope for monitoring the deformation of the coatings in real-time at a microscopic scale.

Citation Download Citation

Khaled Habib "Thermally induced deformations measured by shearography", Proc. SPIE 5532, Interferometry XII: Applications, (2 August 2004); https://doi.org/10.1117/12.555969

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