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5. Numerical methods and metrology for acoustic properties of porous materials
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The need for reliable means of predicting the properties of porous materials is essential, on the one hand to be able to predict the behavior of materials and their various combinations before they are designed, and, on the other, to validate the models presented in paragraph 1 by comparing them with the various global measurements presented in paragraph...
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Numerical methods and metrology for acoustic properties of porous materials
Appendix: equivalent fluid
The "effective density" and "effective modulus of compressibility" functions of the equivalent fluid must be suitably represented by the following approximate models:
References
Standardization
French Standards Association (Afnor)
- Fiberboard – Determining surface absorption – 2: test methods for hardboard. - NF EN 382-2 - (03-1994)
- Acoustics – Materials for acoustic applications – Determination of air flow resistance. - NF EN 29053 - (08-1993)
- Thermal performance of buildings – Air permeability of...
Organizations
Laboratoire d'acoustique de l'Université du Maine http://laum.univ-lemans.fr
Centre de transfert de technologie du Mans (CTTM) http://www.cttm-lemans.com
Laboratoire de sciences de l'habitat (LASH). École nationale des travaux publics...
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