Is my material an efficient acoustical material?

  • Olivier Doutres Department of Mechanical Engineering, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, Québec H3C 1K3, Canada.
  • Franck Sgard Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 boulevard de Maisonneuve Ouest, Montréal, Québec H3A 3C2, Canada.
  • Frédéric Laville Department of Mechanical Engineering, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, Québec H3C 1K3, Canada.
  • Jérémie Voix Department of Mechanical Engineering, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, Québec H3C 1K3, Canada.
  • Olivier Bouthot Department of Mechanical Engineering, École de technologie supérieure, 1100 rue Notre-Dame Ouest, Montréal, Québec H3C 1K3, Canada.
  • Hugues Nélisse Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 boulevard de Maisonneuve Ouest, Montréal, Québec H3A 3C2, Canada.
  • Pierre Marcotte Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 boulevard de Maisonneuve Ouest, Montréal, Québec H3A 3C2, Canada.
  • Jérôme Boutin Institut de recherche Robert-Sauvé en santé et en sécurité du travail, 505 boulevard de Maisonneuve Ouest, Montréal, Québec H3A 3C2, Canada.
Keywords: sound absorption, acoustic materials, foam, porosity, airflow resistivity

Abstract

Researchers of /TS and IRSST decided to synergize again their efforts in order to expand the ICAR laboratory and include a facility dedicated to acoustical materials. Acoustic properties of porous materials such as the normal incidence sound absorption coefficient and the normal incidence sound transmission loss together with several physical intrinsic parameters required as input in the most commonly used associated models (i.e., porosity, airflow resistivity, Young's modulus...) can now be measured in ICAR. This new facility aims at (1) improving the knowledge about the physical phenomena associated with the dissipation of the acoustic energy in porous materials of various microgeometries, (2) developing new materials with dedicated or uncommon acoustical properties (e.g., metamaterial, metacomposite,...) for industrial applications such as hearing protection, building, aeronautic or aerospace and (3) providing the input parameters required in acoustical prediction software dealing with acoustical materials.

Published
2015-06-24
How to Cite
1.
Doutres O, Sgard F, Laville F, Voix J, Bouthot O, Nélisse H, Marcotte P, Boutin J. Is my material an efficient acoustical material?. Canadian Acoustics [Internet]. 2015Jun.24 [cited 2020Apr.9];43(2):24-5. Available from: //jcaa.caa-aca.ca/index.php/jcaa/article/view/2696
Section
Special Issue