The measurement of the shear modulus of a porous polymer layer with two microphones

Vincent Gareton , Denis Lafarge (1) , Sohbi Sahraoui (1)

1 LAUM - Laboratoire d'Acoustique de l'Université du Mans

An experimental method is described for measuring the shear modulus of a thin porous layer. An acoustic excitation with a loudspeaker and a simulation performed with the Biot theory allows measurement without any mechanical excitation.

Mots clés: Polymer foam; Shear modulus; Biot–Johnson–Allard theory; Acoustic absorption

Domaines: Acoustique [physics.class-ph]; Acoustique [physics.class-ph]

Vincent Gareton, Denis Lafarge, Sohbi Sahraoui. The measurement of the shear modulus of a porous polymer layer with two microphones. Polymer Testing, 2009, 28 (5), pp.508. ⟨10.1016/j.polymertesting.2009.03.016⟩. ⟨hal-00397975⟩