| Título: | From microstructure to acoustic behaviour of porous materials |
| Autores: |
Perrot, C.; GAUS, Mechanical Engineering Department, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada Panneton, R.; GAUS, Mechanical Engineering Department, Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada Olny, X.; LASH, DGCB URA CNRS 1652, Ecl. Natl. Travaux Pub. de l'Etal, 69518 Cedex, France |
| Fecha: | 2004-09-01 |
| Publicador: | Canadian Acoustics |
| Fuente: |
 |
| Tipo: |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Conference Proceedings Actes de congrès |
| Tema: |
Materials science Acoustic waves; Algorithms; Computational methods; Computerized tomography; Foams; Microstructure; Porosity; Porous materials; Thermodynamic properties; Viscosity; Acoustic energy; Helmoltz equations; Kelvin structure; Sound absorption |
| Descripción: | A method to determine the macroscopic parameters of absorbent materials from the knowledge of their cellular microstructure, either identified by computer microtomography or scaled by macro-micro geometrical model is discussed. All the relevant quantities have been computed on cellular systems. Study of the fluid velocity field for a hexagonal porous system reveal significant quantitative agreement between macroscopic parameters derived and measured from real aluminum foam. The results reveal the deep relationship between Kelvin structure and real reticulated foams. |
| Idioma: | Inglés |
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