Simon Alverède, Wunenburger Régis, Valier-Brasier Tony
Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, F-75005 Paris, France.
Phys Rev E. 2021 May;103(5):L051001. doi: 10.1103/PhysRevE.103.L051001.
We measure the reflection and transmission of shear waves by slabs of random dispersions of hard, dense spheres in a viscoelastic matrix. By modeling the slab as a Fabry-Pérot interferometer, we determine the effective wave number of coherent shear waves in this scattering medium and its effective mass density. We evidence the effect of the resonant rigid-body translation and rotation of the spheres on the propagation. We validate a vectorial model of multiple scattering for volume fractions of spheres up to 10%, revealing the signature of two modes of propagation.
