ANALYSIS OF A RIGID FRAME MODEL OF POROUS MEDIA FOR THE ACOUSTIC PROPERTIES OF DENSE SNOW

1996 ◽  
Vol 196 (4) ◽  
pp. 439-451 ◽  
Author(s):  
O. Marco ◽  
O. Buser ◽  
P. Villemain
Keyword(s):  
Porous Media ◽  
Acoustic Properties ◽  
Frame Model ◽  
Rigid Frame

scholarly journals Benchmarks for microstructure-based modelling of sound absorbing rigid-frame porous media

2020 ◽  
Vol 483 ◽  
pp. 115441 ◽  
Author(s):  
Tomasz G. Zieliński ◽  
Rodolfo Venegas ◽  
Camille Perrot ◽  
Milan Červenka ◽  
Fabien Chevillotte ◽  
...  
Keyword(s):  
Porous Media ◽  
Rigid Frame

Acoustic properties of porous media

1983 ◽  
Vol 74 (S1) ◽  
pp. S57-S57
Author(s):  
David Linton Johnson ◽  
Thomas J. Plona
Keyword(s):  
Porous Media ◽  
Acoustic Properties

Reproducibility experiments on measuring acoustical properties of rigid-frame porous media (round-robin tests)

2007 ◽  
Vol 122 (1) ◽  
pp. 345-353 ◽  
Author(s):  
Kirill V. Horoshenkov ◽  
Amir Khan ◽  
François-Xavier Bécot ◽  
Luc Jaouen ◽  
Franck Sgard ◽  
...  
Keyword(s):  
Porous Media ◽  
Round Robin ◽  
Acoustical Properties ◽  
Rigid Frame

scholarly journals Acoustic impedance measurement of snow density

1998 ◽  
Vol 26 ◽  
pp. 92-96 ◽  
Author(s):  
O. Marco ◽  
O. Buser ◽  
P. Villemain ◽  
F. Touvier ◽  
Ph. Revol
Keyword(s):  
Porous Media ◽  
Acoustic Wave ◽  
Gamma Rays ◽  
Electromagnetic Waves ◽  
Characteristic Impedance ◽  
Impedance Measurement ◽  
Acoustic Properties ◽  
Laboratory Measurements ◽  
Snow Density ◽  
Acoustic Parameters

Today, it is possible to estimate the density of snow in many different ways (gravimetry, attenuation of gamma rays and velocity of electromagnetic waves). In this paper, we suggest using the acoustic properties of snow. First, we recall the main studies on the acoustic properties of snow. Then, we show, from laboratory measurements, the correlation between density and the acoustic parameters of snow. We found a very good correlation between density and the modulus of the normalized characteristic impedance. We also show that use ofa three-parameter model simulating the propagation of an acoustic wave in porous media allows one to calculate the density of snow from its acoustic porosity.

scholarly journals Acoustic impedance measurement of snow density

1998 ◽  
Vol 26 ◽  
pp. 92-96 ◽  
Author(s):  
O. Marco ◽  
O. Buser ◽  
P. Villemain ◽  
F. Touvier ◽  
Ph. Revol
Keyword(s):  
Porous Media ◽  
Acoustic Wave ◽  
Gamma Rays ◽  
Electromagnetic Waves ◽  
Characteristic Impedance ◽  
Impedance Measurement ◽  
Acoustic Properties ◽  
Laboratory Measurements ◽  
Snow Density ◽  
Acoustic Parameters

Today, it is possible to estimate the density of snow in many different ways (gravimetry, attenuation of gamma rays and velocity of electromagnetic waves). In this paper, we suggest using the acoustic properties of snow. First, we recall the main studies on the acoustic properties of snow. Then, we show, from laboratory measurements, the correlation between density and the acoustic parameters of snow. We found a very good correlation between density and the modulus of the normalized characteristic impedance. We also show that use ofa three-parameter model simulating the propagation of an acoustic wave in porous media allows one to calculate the density of snow from its acoustic porosity.

Time-domain equations for sound propagation in rigid-frame porous media (L)

2004 ◽  
Vol 116 (4) ◽  
pp. 1889-1892 ◽  
Author(s):  
D. Keith Wilson ◽  
Vladimir E. Ostashev ◽  
Sandra L. Collier
Keyword(s):  
Porous Media ◽  
Time Domain ◽  
Sound Propagation ◽  
Rigid Frame
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