Method for the mechanical characterization of poroelastic materials

Authors

  • Christian Langlois Grp. d'Acoust./Vibrations l'Univ. S., Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada
  • Raymond Panneton Grp. d'Acoust./Vibrations l'Univ. S., Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada
  • Noureddine Atalla Grp. d'Acoust./Vibrations l'Univ. S., Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada

Keywords:

Algorithms, Boundary conditions, Compression testing, Computer simulation, Elastic moduli, Finite element method, Poisson ratio, Porous materials, Torsional stress, Transfer functions, Biot theory, Loss factor

Abstract

The closed cells trapped in the materials can burst and change the properties of the material. Techniques based on static or dynamic measurements with compression, shear or torsion tests are performed to characterize the elastic properties. The influence of boundaries conditions is analyzed and a measurement method for the three elastic parameters is derived. The measured transfer function can be correlated to the shape factor of the test specimen. The numerical simulations are found to be in good agreement with the measured sound absorption coefficient.

Published

2000-09-01

How to Cite

1.
Langlois C, Panneton R, Atalla N. Method for the mechanical characterization of poroelastic materials. Canadian Acoustics [Internet]. 2000Sep.1 [cited 2021Apr.11];28(3):82-3. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1300

Issue

Section

Proceedings of the Acoustics Week in Canada

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