Biot Theory of Sound Propagation in Porous Materials Having an Elastic Frame

2009 ◽  
pp. 111-135 ◽  
Keyword(s):  
Porous Materials ◽  
Sound Propagation ◽  
Biot Theory

Sound propagation in porous materials containing rough tubes

2020 ◽  
Vol 32 (9) ◽  
pp. 093604 ◽  
Author(s):  
Zhimin Xu ◽  
Wei He ◽  
Fengxian Xin ◽  
Tian Jian Lu
Keyword(s):  
Porous Materials ◽  
Sound Propagation

scholarly journals Validity of the limp model for porous materials: A criterion based on the Biot theory

2007 ◽  
Vol 122 (4) ◽  
pp. 2038-2048 ◽  
Author(s):  
Olivier Doutres ◽  
Nicolas Dauchez ◽  
Jean-Michel Génevaux ◽  
Olivier Dazel
Keyword(s):  
Porous Materials ◽  
Biot Theory

POROUS MATERIALS FOR SCALE MODEL EXPERIMENTS IN OUTDOOR SOUND PROPAGATION

1996 ◽  
Vol 194 (5) ◽  
pp. 685-708 ◽  
Author(s):  
K.V. Horoshenkov ◽  
D.C. Hothersall ◽  
K. Attenborough
Keyword(s):  
Porous Materials ◽  
Sound Propagation ◽  
Scale Model ◽  
Model Experiments

Ultrasonic studies of liquid helium in porous media

1987 ◽  
Vol 65 (11) ◽  
pp. 1557-1559 ◽  
Author(s):  
J. R. Beamish ◽  
K. Warner
Keyword(s):  
Porous Media ◽  
Sound Propagation ◽  
Porous Ceramic ◽  
Ultrasonic Waves ◽  
Effective Density ◽  
Biot Theory ◽  
Fluid Density ◽  
Normal Fluid ◽  
Superfluid Fraction ◽  
Viscous Losses

We have studied the propagation of 12 MHz transverse ultrasonic waves in a porous ceramic containing liquid 4He. Both the sound velocity and the attenuation clearly show the superfluid nature of helium. The helium in the pores increases the system's effective density by an amount proportional to the normal-fluid density and so decreases the sound speed. The decoupling of the superfluid fraction below the lambda transition allows us to use the shear wave essentially as a "high-frequency torsional oscillator" to determine the superfluid density and pore tortuosity. The sound attenuation in this system is due to the same mechanism as for fourth sound, namely, viscous losses due to motion of the normal-fluid component. We observed an attenuation proportional to the normal-fluid density and compare this result to predictions of the Biot theory of sound propagation in fluid-filled porous media.

Nonlinear wave propagation in porous materials based on the Biot theory

2017 ◽  
Vol 142 (2) ◽  
pp. 756-770 ◽  
Author(s):  
L. H. Tong ◽  
Y. S. Liu ◽  
D. X. Geng ◽  
S. K. Lai
Keyword(s):  
Wave Propagation ◽  
Porous Materials ◽  
Nonlinear Wave ◽  
Biot Theory ◽  
Nonlinear Wave Propagation
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