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Sustainable Acoustic Metasurfaces for Sound Control

Author

Listed:
  • Paola Gori

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Claudia Guattari

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Francesco Asdrubali

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Roberto De Lieto Vollaro

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Alessio Monti

    (Department of Engineering, Niccolò Cusano University, Via Don Carlo Gnocchi 3, Rome 00166, Italy)

  • Davide Ramaccia

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Filiberto Bilotti

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

  • Alessandro Toscano

    (Department of Engineering, University of Roma TRE, Via Vito Volterra 62, Rome 00146, Italy)

Abstract

Sound attenuation with conventional acoustic materials is subject to the mass law and requires massive and bulky structures at low frequencies. A possible alternative solution is provided by the use of metamaterials, which are artificial materials properly engineered to obtain properties and characteristics that it is not possible to find in natural materials. Theory and applications of metamaterials, already consolidated in electromagnetism, can be extended to acoustics; in particular, they can be applied to improve the properties of acoustical panels. The design of acoustic metasurfaces that could effectively control transmitted sound in unconventional ways appears a significant subject to be investigated, given its wide-ranging possible applications. In this contribution, we investigate the application of a metasurface-inspired technique to achieve the acoustical insulation of an environment. The designed surface has subwavelength thickness and structuring and could be realized with cheap, lightweight and sustainable materials. We present a few examples of such structures and analyze their acoustical behavior by means of full-wave simulations.

Suggested Citation

  • Paola Gori & Claudia Guattari & Francesco Asdrubali & Roberto De Lieto Vollaro & Alessio Monti & Davide Ramaccia & Filiberto Bilotti & Alessandro Toscano, 2016. "Sustainable Acoustic Metasurfaces for Sound Control," Sustainability, MDPI, vol. 8(2), pages 1-10, January.
    • Handle: RePEc:gam:jsusta:v:8:y:2016:i:2:p:107-:d:62751
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    References listed on IDEAS

    as
    1. Martin Maldovan, 2013. "Sound and heat revolutions in phononics," Nature, Nature, vol. 503(7475), pages 209-217, November.
    2. Claudia Guattari & Paola Gori & Roberto De Lieto Vollaro & Luca Evangelisti & Gabriele Battista & Carmine Basilicata & Alessandro Toscano & Filiberto Bilotti, 2014. "Robustness of Acoustic Scattering Cancellation to Parameter Variations," Sustainability, MDPI, vol. 6(7), pages 1-10, July.
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    Cited by:

    1. Stefano Cascone & Gianpiero Evola & Antonio Gagliano & Gaetano Sciuto & Chiara Baroetto Parisi, 2019. "Laboratory and In-Situ Measurements for Thermal and Acoustic Performance of Straw Bales," Sustainability, MDPI, vol. 11(20), pages 1-19, October.
    2. Luca Fredianelli & Marco Nastasi & Marco Bernardini & Francesco Fidecaro & Gaetano Licitra, 2020. "Pass-by Characterization of Noise Emitted by Different Categories of Seagoing Ships in Ports," Sustainability, MDPI, vol. 12(5), pages 1-12, February.
    3. Niccolò Pampuro & Christian Preti & Eugenio Cavallo, 2018. "Recycling Pig Slurry Solid Fraction Compost as a Sound Absorber," Sustainability, MDPI, vol. 10(1), pages 1-13, January.

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