Influence of micro-structural properties on the acoustic performances of novel metallic foams

Authors

  • Dominic Pilon GAUS, Dept. of Mech. Eng., Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada
  • Raymond Panneton GAUS, Dept. of Mech. Eng., Université de Sherbrooke, Sherbrooke, Que. J1K 2R1, Canada
  • Franck Sgard LASH DGCB URA CNRS 1652, ENTPE, 2 Maurice Audin, 69518 Valux-en-Velin, France
  • Louis-Philippe Lefebvre IMI - NRC, 75 Mortagne blvd., Boucherville, Que. J4B 6Y4, Canada

Keywords:

Acoustic properties, Acoustic wave absorption, Acoustics, Microstructure, Optimization, Pore size, Porous materials, Scanning electron microscopy, Thermodynamics, Acoustic materials, Acoustic performances, Macroscopic models, Metallic foams

Abstract

The links between the microstructural properties of the metal foams and their acoustic properties were investigated. The influence of the microstructural properties on the acoustic performances was also investigated. It was shown that a direct link exists between the thermal characteristic length of the Johnson-Champoux-Allard model and the average pore diameter in the studied open-cell metallic foams. The results show that the smart design of acoustical materials can be deemed attainable with these new materials.

Published

2004-09-01

How to Cite

1.
Pilon D, Panneton R, Sgard F, Lefebvre L-P. Influence of micro-structural properties on the acoustic performances of novel metallic foams. Canadian Acoustics [Internet]. 2004Sep.1 [cited 2020Sep.28];32(3):24-5. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1609

Issue

Section

Proceedings of the Acoustics Week in Canada

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