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Thermomechanical field measurements by hybrid stereocorrelation

Abstract : In order to investigate the thermal fatigue occurring in the cooling system of nuclear power plants, an experimental setup, the so-called FLASH (THErmal Fatigue by LASer or Helium pulses) setup is designed to perform high cycle (about several 10$^6$) thermal fluxes onto the surface of austenitic stainless steel with excellent stability of thermal loading. With the prediction of finite element analyses, it is deduced that the largest strain variations during cyclic loading are in the out-of-plane direction resulting in several micrometer out-of-plane displacements. In the present work, it is shown that 3D displacement fields and 2D Lagrangian temperature fields can be measured thanks to a hybrid stereovision setup via global stereocorrelation. The stereovision system is composed of one infrared camera and one visible light camera
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Submitted on : Wednesday, December 18, 2019 - 10:30:45 AM
Last modification on : Tuesday, April 28, 2020 - 11:28:15 AM

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  • HAL Id : cea-02417318, version 1

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CEA | DEN | CNRS

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Y. Wang, A. Charbal, F. Hild, S. Roux, L. Vincent. Thermomechanical field measurements by hybrid stereocorrelation. PM2018 - Photomechanics, Mar 2018, Toulouse, France. ⟨cea-02417318⟩

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