Control of the stop band of an acoustic double fishnet
Murray, Alasdair R.J.; Hendry, Euan; Summers, I.R.; et al.Sambles, J. Roy; Hibbins, Alastair P.
Date: 26 August 2013
Article
Journal
Journal of the Acoustical Society of America
Publisher
Acoustical Society of America
Publisher DOI
Abstract
The acoustic transmittance of two closely spaced solid plates, each perforated with a square array of cylindrical holes, exhibits a band of near-perfect acoustic attenuation originating from hybridization between a resonance in the gap separating the plates and pipe resonances in the holes. Displacement of one plate relative to the ...
The acoustic transmittance of two closely spaced solid plates, each perforated with a square array of cylindrical holes, exhibits a band of near-perfect acoustic attenuation originating from hybridization between a resonance in the gap separating the plates and pipe resonances in the holes. Displacement of one plate relative to the other, such that the holes are no longer aligned, or an increase in the plate separation leads to an increased center frequency of the stop band. This ability to easily tune the frequency of the stop band may prove advantageous.
Physics and Astronomy
Faculty of Environment, Science and Economy
Item views 0
Full item downloads 0
Related items
Showing items related by title, author, creator and subject.
-
Acoustic Metamaterials: ‘The Influence of Boundary Effects on Resonant Acoustic Transmission through a Thin Slit’
Lovelock, Ruth Kathleen (University of Exeter CEMPS, 30 September 2014)Resonant transmission of sound through a single, open-ended slit in an aluminium plate is explored. The experimental results demonstrate a significant reduction in the resonant frequency as the slit is narrowed to below ... -
Underwater acoustic emission monitoring – Experimental investigations and acoustic signature recognition of synthetic mooring ropes
Bashir, I; Walsh, J; Thies, PR; et al. (Elsevier, 16 February 2017)Mooring ropes are essential components of offshore installations, and synthetic ropes are increasingly preferred because of their favourable cost to weight ratios. In-service condition of these materials is traditionally ... -
Howl vocalisations of captive black and gold howler monkeys (Alouatta caraya); acoustics, function and applications for welfare
Farmer, Holly Lavinia Antonia (University of Exeter Psychology, 21 July 2011)This thesis aims to determine the function of howl vocalisations performed by the black and gold howler monkey, Alouatta caraya, and to examine the connections between howling, welfare and breeding in captivity. Comparisons ...