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Essai de fatigue thermique par chocs laser

Abstract : A new experimental setting is used to study thermal fatigue phenomenon occurring in structures of nuclear power plants. The cyclic thermal shocks are performed by a laser. A thermal fatigue test is presented on an A316L(N) stainless steel. The initial temperature is 380°C and the thermal loading is of 200°C imposed at a frequency of 1.5 Hz. The thermal fatigue test is performed till a crack is formed (of 800µm). The thermal and kinematic fields are measured owing to an infrared and a visible camera. Thanks to the synchronization of both cameras and to the digital image correlation method used, the initiation and propagation of the crack can be approximated.
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  • HAL Id : cea-02500836, version 1

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A. Charbal, L. Vincent, F. Hild, M. Poncelet, S. Roux, et al.. Essai de fatigue thermique par chocs laser. 22ème Congrès Français de Mécanique, Aug 2015, Lyon, France. ⟨cea-02500836⟩

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