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ORIGINAL RESEARCH article

Front. Acoust.
Sec. Acoustic Materials, Noise Control and Sound Perception
Volume 2 - 2024 | doi: 10.3389/facou.2024.1498722
This article is part of the Research Topic Insights in Acoustic Materials, Noise Control and Sound Perception View all 3 articles

Multi-Objective Optimization of Structured Material Parameters for Reducing Broadband Aircraft Noise Across Various Frequencies

Provisionally accepted
Tenon Charly KONE Tenon Charly KONE 1*Sebastian Ghinet Sebastian Ghinet 1Raymond Panneton Raymond Panneton 2Anant Grewal Anant Grewal 1
  • 1 National Research Council Canada (NRC), Ottawa, Canada
  • 2 Université de Sherbrooke, Sherbrooke, Quebec, Canada

The final, formatted version of the article will be published soon.

    Controlling broadband noise across the entire frequency spectrum, from low to high frequencies, remains an important challenge in the aerospace, transportation, and construction industries. While recent advancements in acoustic metamaterials have largely targeted low-frequency noise, their narrow-band resonances limit broader-band noise attenuation. This paper introduces an innovative structured material system designed to overcome this limitation by employing a parallel assembly of various structured materials, thereby broadening the effective resonance frequency band from low to high frequencies.The study details a configuration combining structured materials with Helmholtz Resonators, embedded within a fiberglass layer. The parameters of each structured material were optimized using a multi-objective optimization approach based on a surrogate model. This optimization allows for precise grouping of individual resonant frequencies, enhancing the material system's ability to attenuate noise across a broad frequency range. By addressing both low and high-frequency noise, this research presents an optimized approach to noise control.Results demonstrate that the proposed structured material system significantly reduces broadband noise, offering a viable and enduring solution for aircraft noise mitigation. This approach not only achieves substantial noise reduction but also aligns with practical implementation constraints. The findings underscore the importance of the optimization phase in the development of advanced noise control technologies, marking a significant step towards quieter environments in aerospace, transportation, and construction applications.

    Keywords: Metamaterial (MM), optimization, Broadband-Noise, Aircraft-Noise, Low-frequency

    Received: 19 Sep 2024; Accepted: 02 Dec 2024.

    Copyright: © 2024 KONE, Ghinet, Panneton and Grewal. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Tenon Charly KONE, National Research Council Canada (NRC), Ottawa, Canada

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.