Sound absorption by non homogeneous thin porous layers

Acustica

Volumn 83, Issue 5, 1997, Pages 891-896

  Atalla, M ^a   Panneton, R ^a   Allard, J F ^b  

^a UNIVERSITÉ DE SHERBROOKE   (Canada)

^b UNIVERSITÉ DU MAINE   (France)

Author keywords

[No Author keywords available]

Indexed keywords

COMPUTATIONAL METHODS; FINITE ELEMENT METHOD; MATHEMATICAL MODELS; POROUS MATERIALS;

NONHOMOGENEOUS THIN POROUS LAYERS;

ACOUSTIC WAVE ABSORPTION;

EID: 0031220618     PISSN: 00017884     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (8)

1. J. F. Allard: Propagation of sound in porous media: Modeling sound absorbing materials. Chapman and Hall, London, 1993.
2. B. Brouard, D. Lafarge, J. F. Allard: A general method of modeling sound propagation in layered media. J. Sound Vib. 183 (1995) 129-142.
3. A. Bardot, B. Brouard, J. F. Allard: Frame decoupling at low frequencies in thin porous layers saturated by air. J. Appl. Phys. 79 (1996) (to appear).
4. V. Tarnow: Measurement of sound propagation in glass wool. J. Acoust. Soc. Am. 97 (1995) 2272-2281.
5. Y. Champoux, J. F. Allard: Dynamic tortuosity and bulk modulus in air-saturated porous media. J. Appl. Phys. 70 (1991) 1975-1979.
6. D. L. Johnson, J. Koplik, R. Dashen: Theory of dynamic permeability and tortuosity in fluid saturated porous media. J. Fluid Mech. 176 (1987) 379-402.
7. D. Sornette: Acoustic waves in random media. I. Weak disorder regime, II. Coherent effects and strong disorder regime, III. Experimental situations. Acustica 67, 68 (1989) 199-215, 251-265, 15-25.
8. P. Guignouard: L'absorption acoustique des matériaux poreux. predictions et mesure. Dissertation. Le Mans, 1990. (in French).