6 October 2017 High-speed infrared imaging for material characterization in experimental mechanics experiments
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Abstract
Heat transfers are involved in many phenomena such as friction, tensile stress, shear stress and material rupture. Among the challenges encountered during the characterization of such thermal patterns is the need for both high spatial and temporal resolution. Infrared imaging provides information about surface temperature that can be attributed to the stress response of the material and breaking of chemical bounds. In order to illustrate this concept, tensile and shear tests were carried out on steel, aluminum and carbon fiber composite materials and monitored using high-speed (Telops FASTM2K) and high-definition (Telops HD-IR) infrared imaging. Results from split-Hopkinson experiments carried out on a polymer material at high strain-rate are also presented. The results illustrate how high-speed and high-definition infrared imaging in the midwave infrared (MWIR, 3 – 5 μm) spectral range can provide detailed information about the thermal properties of materials undergoing mechanical testing.
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Marc-André Gagnon, Marc-André Gagnon, Frédérick Marcotte, Frédérick Marcotte, Philippe Lagueux, Philippe Lagueux, Vincent Farley, Vincent Farley, Éric Guyot, Éric Guyot, Vince Morton, Vince Morton, } "High-speed infrared imaging for material characterization in experimental mechanics experiments", Proc. SPIE 10433, Electro-Optical and Infrared Systems: Technology and Applications XIV, 104331B (6 October 2017); doi: 10.1117/12.2277316; https://doi.org/10.1117/12.2277316
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