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Effect of the presence and size of a localized nonlinear source in concrete
J-P Zardan1, C Payan, V Garnier
1Laboratoire de Caractérisation Non Destructive, Université de la Méditerranée IUT Aix-Provence, Avenue Gaston Berger, 13100 Aix en Provence, France. jean-philippe.zardan@univmed.fr
Abstract:
The aim of the present letter is to identify the contribution of a macroscopic source of elastic nonlinearity in concrete, a medium which by nature is nonlinear, and belongs to the nonlinear mesoscopic class of materials. The influence of real, localized macro-cracks is characterized with respect to the intrinsic nonlinearity of the material. The influence of the size of the source on the amplitude of the measured nonlinearity is qualitatively demonstrated. A comparison is made between the changes in linear and nonlinear parameters.
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