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Sound-Absorption Properties of Materials Made of Esparto Grass Fibers

Author

Listed:
  • Jorge P. Arenas

    (Institute of Acoustics, University Austral of Chile, PO Box 567, Valdivia 5090000, Chile)

  • Romina del Rey

    (Centro de Tecnologías Físicas, Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain)

  • Jesús Alba

    (Centro de Tecnologías Físicas, Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain)

  • Roberto Oltra

    (Universitat Politècnica de València, EPS Gandia, C/Paranimf, 1, Grao de Gandia, 46730 Valencia, Spain)

Abstract

Research on sound-absorbing materials made of natural fibers is an emerging area in sustainable materials. In this communication, the use of raw esparto grass as an environmentally friendly sound-absorbing material is explored. Measurements of the normal-incidence sound-absorption coefficient and airflow resistivity of three different types of esparto from different countries are presented. In addition, the best-fit coefficients for reasonable prediction of the sound-absorption performance by means of simple empirical formulae are reported. These formulae require only knowledge of the airflow resistivity of the fibrous material. The results presented in this paper are an addition to the characterization of available natural fibers to be used as alternatives to synthetic ones in the manufacturing of sound-absorbing materials.

Suggested Citation

  • Jorge P. Arenas & Romina del Rey & Jesús Alba & Roberto Oltra, 2020. "Sound-Absorption Properties of Materials Made of Esparto Grass Fibers," Sustainability, MDPI, vol. 12(14), pages 1-10, July.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:14:p:5533-:d:382176
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    References listed on IDEAS

    as
    1. Asniawaty Kusno & Kimihiro Sakagami & Takeshi Okuzono & Masahiro Toyoda & Toru Otsuru & Rosady Mulyadi & Kusno Kamil, 2019. "A Pilot Study on the Sound Absorption Characteristics of Chicken Feathers as an Alternative Sustainable Acoustical Material," Sustainability, MDPI, vol. 11(5), pages 1-11, March.
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    Cited by:

    1. Tomas Astrauskas & Tomas Januševičius & Raimondas Grubliauskas, 2021. "Acoustic Panels Made of Paper Sludge and Clay Composites," Sustainability, MDPI, vol. 13(2), pages 1-10, January.
    2. Tao Yang & Lizhu Hu & Xiaoman Xiong & Michal Petrů & Muhammad Tayyab Noman & Rajesh Mishra & Jiří Militký, 2020. "Sound Absorption Properties of Natural Fibers: A Review," Sustainability, MDPI, vol. 12(20), pages 1-25, October.
    3. Jorge P. Arenas & Kimihiro Sakagami, 2020. "Sustainable Acoustic Materials," Sustainability, MDPI, vol. 12(16), pages 1-5, August.

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