All Outputs (2)

Multiple resonances in lossy acoustic black holes - theory and experiment (2022)
Journal Article
Umnova, O., Brooke, D., Leclaire, P., & Dupont, T. (2022). Multiple resonances in lossy acoustic black holes - theory and experiment. Journal of Sound and Vibration, 543, https://doi.org/10.1016/j.jsv.2022.117377

Acoustic properties of the metamaterial graded absorber, also known as ``acoustic black hole'', are studied in the linear regime. The absorber consists of thin metallic circular plates, each with a central perforation, separated by annular air caviti... Read More about Multiple resonances in lossy acoustic black holes - theory and experiment.

Acoustic wave propagation in permeable lossy metamaterials (2022)
Journal Article
Venegas, R., Núñez, G., Boutin, C., Umnova, O., & Zhang, Q. (2022). Acoustic wave propagation in permeable lossy metamaterials. Physics of Fluids, 34(1), 017117. https://doi.org/10.1063/5.0077342

This paper investigates acoustic wave propagation in gas-saturated permeable lossy metamaterials, which have different types of resonators, namely, acoustic and elastic resonators, as building-block elements. By using the two-scale asymptotic homogen... Read More about Acoustic wave propagation in permeable lossy metamaterials.