Hybrid multiview correlation for measuring and monitoring thermomechanical fatigue test

Abstract : This paper focuses on the development of fully-coupled 3D thermomechanical field measurement techniques applied for monitoring thermal fatigue tests. First, an original hybrid and multiview system composed of one infrared (IR) camera and two visible light cameras is introduced. The spatial registration of multimodal imaging devices is solved successfully using global Hybrid Multiview Correlation (HMC) based on the NURBS representation of the 3D calibration target and the surface of interest. The measurement uncertainties are estimated with an initial heating up phase prior to the fatigue test. Then, HMC is performed to measure the 3D surface displacement and temperature fields during laser shocks onto an austenitic stainless steel plate. Last, the HMC measurements are validated in comparison with finite element simulations of the test.
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Submitted on : Friday, March 8, 2019 - 11:21:44 AM
Last modification on : Friday, May 24, 2019 - 5:21:04 PM
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Y. Wang, A. Charbal, J.E. Dufour, François Hild, Stéphane Roux, et al.. Hybrid multiview correlation for measuring and monitoring thermomechanical fatigue test. Experimental Mechanics, Society for Experimental Mechanics, In press, ⟨10.1007/s11340-019-00500-8⟩. ⟨hal-02061580⟩

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