Structured Assembly of Acoustic Materials for Mitigating Low-Frequency Broadband Aircraft Noise

Authors

Keywords:

Broadband, Low-frequency, Metamaterials, Aircraft Noise

Abstract

The challenge of attenuating low-frequency broadband noise is crucial in aeronautics, ground transportation, and construction industries, necessitating innovative solutions for improved acoustic control. This paper introduces a novel thin acoustic metamaterial design aimed at enhancing broadband noise attenuation at low frequencies. The design comprises structured metamaterials arranged in series and parallel within a fiberglass layer, optimizing resonant frequencies to create a band that maximally attenuates low-frequency noise. Using COMSOL Multiphysics finite element methods, the performance of this metamaterial was assessed, demonstrating wide frequency band noise attenuation at low frequencies and confirming its efficacy.

Published

2024-05-12

How to Cite

1.
KONE TC, Ghinet S, Panneton R, Grewal A. Structured Assembly of Acoustic Materials for Mitigating Low-Frequency Broadband Aircraft Noise. Canadian Acoustics [Internet]. 2024 May 12 [cited 2024 May 20];52(1). Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/4153

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