BA, Abdoulaye; KOVALENKO, Artem; ARISTÉGUI, Christophe; MONDAIN-MONVAL, Olivier; BRUNET, Thomas

doi:10.1038/srep40106

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BA, Abdoulaye

KOVALENKO, Artem
Centre de Recherche Paul Pascal [CRPP]

ARISTÉGUI, Christophe
Laboratoire de Mécanique Physique [LMP]

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Article de revue

Ce document a été publié dans

Scientific Reports. 2017-03, vol. 7, n° 1, p. 1-6

Nature Publishing Group

Résumé en anglais

Soft porous silicone rubbers are demonstrated to exhibit extremely low sound speeds of tens of m/s for these dense materials, even for low porosities of the order of a few percent. Our ultrasonic experiments show a sudden drop of the longitudinal sound speed with the porosity, while the transverse sound speed remains constant. For such porous elastomeric materials, we propose simple analytical expressions for these two sound speeds, derived in the framework of Kuster and Toksöz, revealing an excellent agreement between the theoretical predictions and the experimental results for both longitudinal and shear waves. Acoustic attenuation measurements also complete the characterization of these soft porous materials.< Réduire

URI

https://oskar-bordeaux.fr/handle/20.500.12278/76086

DOI

http://dx.doi.org/10.1038/srep40106

Project ANR

Advanced Materials by Design - ANR-10-LABX-0042
Initiative d'excellence de l'Université de Bordeaux - ANR-10-IDEX-0003

Origine

Importé de hal

Unités de recherche

Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295