Effect of the presence and size of a localized nonlinear source in concrete

J.-P. Zardan (1) , C. Payan (1) , V. Garnier (1) , J. Salin (2)

1 O&I - Ondes et Imagerie
2 EDF - EDF

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.

Domaines: Mécanique [physics.med-ph]

J.-P. Zardan, C. Payan, V. Garnier, J. Salin. Effect of the presence and size of a localized nonlinear source in concrete. Journal of the Acoustical Society of America, 2010. ⟨hal-01294734⟩