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Article Dans Une Revue Journal of the Acoustical Society of America Année : 2008

On the use of a loudspeaker for measuring the viscoelastic properties of sound absorbing materials

Résumé

This paper investigates the feasibility to use an electrodynamic loudspeaker to determine viscoelastic properties of sound absorbing materials in the audible frequency range. The loudspeaker compresses the porous sample in a cavity and a measurement of its electrical impedance allows to determine the mechanical impedance of the sample: no additional sensors are required. Viscoelastic properties of the material are then estimated by inverting a 1D Biot model. The method is applied to two sound absorbing materials (glass wool and polymer foam). Results are in good agreement with classical compression quasistatic method.
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Dates et versions

hal-00323570 , version 1 (24-09-2008)

Identifiants

  • HAL Id : hal-00323570 , version 1

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Olivier Doutres, Nicolas Dauchez, Jean-Michel Génevaux, Guy Lemarquand. On the use of a loudspeaker for measuring the viscoelastic properties of sound absorbing materials. Journal of the Acoustical Society of America, 2008, 124 (6), pp.EL335-40. ⟨hal-00323570⟩
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