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

Este ítem está publicado en

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

Nature Publishing Group

Resumen en inglés

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.< Leer menos

URI

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

DOI

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

Proyecto ANR

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

Orígen

Importado de Hal

Centros de investigación

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