Investigation into the application of an acoustic metamaterial for sound attenuation with airflow

Conference paper

Weber, L. and Gomez-Agustina, L. (2015). Investigation into the application of an acoustic metamaterial for sound attenuation with airflow. 22nd International Congress on Sound and Vibration, ICSV 2015. 12 - 16 Jul 2015
AuthorsWeber, L. and Gomez-Agustina, L.
TypeConference paper
Abstract

This paper presents a practical investigation into the development and potential noise control application of an acoustic metamaterial. Acoustic Metamaterials are capable of changing the natural properties of sound, giving exposure to a new range of acoustical phenomena that have never been witnessed before, such as a negative bulk modulus and a negative mass density. The material investigated consisted of a panel structure of concatenated Helmholtz resonators
with diffraction characteristics, which was incorporated into an acoustic enclosure. The design aimed to attenuate sound across a wide frequency range, while allowing air to flow through the panel. Sound insertion loss tests of the enclosure were carried out in an anechoic chamber.
Airflow resistance tests were also undertaken in a controlled environment. Satisfactory sound attenuation and air flow resistance results indicated this metamaterial has the potential to be used as a noise control solution for acoustic enclosures requiring ventilation

Year2015
Web address (URL)http://www.scopus.com/inward/record.url?eid=2-s2.0-84971233906&partnerID=MN8TOARS
Accepted author manuscript
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Publication dates
Online12 Jul 2015
Publication process dates
Deposited23 Jun 2022
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https://openresearch.lsbu.ac.uk/item/911y6

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Investig acoustic metamaterial FlorenceJuly15 ICSV22submitted.pdf
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File access level: Open

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