Sound Attenuation of an Acoustic Barrier Made with Metamaterials

Authors

  • Gino Iannace Universita degli Study della Campania "Luigi Vanvitelli"
  • Umberto Berardi Ryerson University http://orcid.org/0000-0002-0508-6195
  • Giuseppe Ciaburro Università degli Studi della Campania « Luigi Vanvitelli »
  • Amelia Trematerra Università degli Studi della Campania « Luigi Vanvitelli »

Keywords:

metamaterials, acoustic barrier, insertion loss, scale model

Abstract

Metamaterials represent a new approach in applied acoustics and noise control fields, although the first studies of them date back to a half century ago to Viselago, and later to Pendry. In this paper, after a brief introduction to the state of art of metamaterials for acoustic applications, the sound attenuation of an acoustic barrier made following metamaterial rules is investigated. A 1:10 scale model was built using cylindrical wooden bars, 30 cm high and 1.5 cm in diameter. The total length of the barrier model was 100 cm. The barrier was investigated for four alternating rows of cylindrical bars, spacing each bar with an empty space to create different regular geometries. The insertion losses of each configuration are reported.

Additional Files

Published

2019-11-06

How to Cite

1.
Iannace G, Berardi U, Ciaburro G, Trematerra A. Sound Attenuation of an Acoustic Barrier Made with Metamaterials. Canadian Acoustics [Internet]. 2019 Nov. 6 [cited 2024 Oct. 7];47(4). Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3308

Issue

Vol. 47 No. 4 (2019)

Section

Article - Engineering Acoustics / Noise Control

License

Author Licensing Addendum

This Licensing Addendum ("Addendum") is entered into between the undersigned Author(s) and Canadian Acoustics journal published by the Canadian Acoustical Association (hereinafter referred to as the "Publisher"). The Author(s) and the Publisher agree as follows:

  1. Retained Rights: The Author(s) retain(s) the following rights:

    • The right to reproduce, distribute, and publicly display the Work on the Author's personal website or the website of the Author's institution.
    • The right to use the Work in the Author's teaching activities and presentations.
    • The right to include the Work in a compilation for the Author's personal use, not for sale.

  2. Grant of License: The Author(s) grant(s) to the Publisher a worldwide exclusive license to publish, reproduce, distribute, and display the Work in Canadian Acoustics and any other formats and media deemed appropriate by the Publisher.

  3. Attribution: The Publisher agrees to include proper attribution to the Author(s) in all publications and reproductions of the Work.

  4. No Conflict: This Addendum is intended to be in harmony with, and not in conflict with, the terms and conditions of the original agreement entered into between the Author(s) and the Publisher.

  5. Copyright Clause: Copyright on articles is held by the Author(s). The corresponding Author has the right to grant on behalf of all Authors and does grant on behalf of all Authors, a worldwide exclusive license to the Publisher and its licensees in perpetuity, in all forms, formats, and media (whether known now or created in the future), including but not limited to the rights to publish, reproduce, distribute, display, store, translate, create adaptations, reprints, include within collections, and create summaries, extracts, and/or abstracts of the Contribution.