Low acoustic transmittance through a holey structure

Bell, James Stephen ORCID: https://orcid.org/0000-0001-8371-9851, Summers, I. R., Murray, A. R. J., Hendry, E., Sambles, J. R. and Hibbins, A. P. 2012. Low acoustic transmittance through a holey structure. Physical Review B: Condensed Matter and Materials Physics 85 (21) , 214305. 10.1103/PhysRevB.85.214305

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Abstract

The “acoustic double fishnet” is a structure with holes running from its front to back faces, yet at a characteristic frequency it transmits very little sound. The transmittance of this structure, which is comprised of a pair of closely spaced, periodically perforated plates, is determined experimentally and analytically. The surprising acoustic properties are due to hybridization between a two-dimensional resonance within the gap between the plates, and pipe modes within the holes. At the center of the stop band the input impedance is imaginary, interpreted as a negative product of effective bulk modulus and density.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Optometry and Vision Sciences
Subjects:	Q Science > QC Physics
Publisher:	American Physical Society
ISSN:	1098-0121
Last Modified:	31 Oct 2022 09:42
URI:	https://orca.cardiff.ac.uk/id/eprint/82160

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