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Caractérisation non destructive des bétons par propagation d'ondes ultrasonores
Vincent Garnier, Jean François Chaix, Mathieu Rossat, Cédric Payan, Gilles Corneloup
Journal:

Mechanics & Industry / Volume 10 / Issue 3-4 / May 2009

Published online by Cambridge University Press:

05 August 2009, pp. 299-303

Print publication:

May 2009
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La caractérisation non destructive des structures en béton par propagation d'ondes ultrasonores permet d'accéder aux vitesses voire atténuations et spectres fréquentiels pour diagnostiquer une pathologie ou un état du matériau. La forte hétérogénéité du béton au regard des longueurs d'ondes conduit à des phénomènes de diffusion et de non linéarité acoustique. Les conséquences sur les paramètres ultrasonores sont analysées tant sur l'aspect propagation que rétrodiffusion.