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Ultrasonic array imaging of nuclear austenitic V-shape welds with Inhomogeneous and unknown qnisotropic properties

Abstract : The quality of ultrasound images of welds is highly penalized by the dendritic structure of the material that forms during cooling. The image of a flaw is all the more degraded as a reliable description of such a medium is most of the time not possible, due to the poor knowledge on the weld at time of inspection. In a previous work, we demonstrated the efficiency of an optimization procedure to correct a degraded Total Focusing Method (TFM) image of a point-like reflector inside a homogeneous weld, with uniaxial grain orientation. In the present contribution, this procedure is extended to the inspection of defects in more realistic welds with a varying grain orientation
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https://hal-centralesupelec.archives-ouvertes.fr/hal-03244184
Contributor : Dominique Lesselier <>
Submitted on : Tuesday, June 1, 2021 - 9:53:23 AM
Last modification on : Monday, June 7, 2021 - 8:46:25 AM

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  • HAL Id : hal-03244184, version 1

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Corentin Ménard, Sebastien Robert, Dominique Lesselier. Ultrasonic array imaging of nuclear austenitic V-shape welds with Inhomogeneous and unknown qnisotropic properties. 2021. ⟨hal-03244184⟩

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