On solid noise solutions in waveguides

Antti Hynninen, Jukka Tanttari, Seppo Uosukainen

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    Restrictions on unwanted sound, noise are more and more stringent. In many applications, airborne noise travels from the source to the receiver via transmission path consisting of waveguides. Typical applications include ventilation ducts and internal combustion engine intake and exhaust systems, for example. Usually in these applications, resistive silencers are designed for noise attenuation in selected frequency range. Wool and fiber based resistive materials cause back-pressure and have limited lifetime. Major problem with these materials is development of brittleness which leads to decrease in attenuation performance and when broke down in pieces, might cause major failures in connected devices. In addition, microfibers contaminate air. In this paper, wool and fiber less noise control techniques are discussed. In addition, acoustic properties of panel resonators and micro perforated panel silencers are simulated with different geometries.
    Original languageEnglish
    Title of host publicationProceedings of the 25th International Congress on Sound and Vibration
    PublisherInternational Institute of Acoustics and Vibration IIAV
    Pages3148-3155
    Number of pages8
    Volume5
    ISBN (Electronic)978-83-7880-552-6
    Publication statusPublished - 2018
    MoE publication typeA4 Article in a conference publication
    Event25th International Congress on Sound and Vibration, ICSV25 - Hiroshima, Japan
    Duration: 8 Jul 201812 Jul 2018

    Conference

    Conference25th International Congress on Sound and Vibration, ICSV25
    Abbreviated titleICSV25
    CountryJapan
    CityHiroshima
    Period8/07/1812/07/18

    Keywords

    • waveguide
    • silencer
    • absorber
    • simulations

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  • Research Output

    A sound attenuator as well as elements and a method of production thereof

    Komi, E., Tanttari, J., Hynninen, A. & Uosukainen, S., 31 Mar 2020, IPC No. F01N 1/12, F01N 1/08, Patent No. FI128355B, 29 Jan 2019, Priority date 29 Jan 2019, Priority No. FI20195054A

    Research output: PatentPatent

    Open Access
  • Cite this

    Hynninen, A., Tanttari, J., & Uosukainen, S. (2018). On solid noise solutions in waveguides. In Proceedings of the 25th International Congress on Sound and Vibration (Vol. 5, pp. 3148-3155). [944] International Institute of Acoustics and Vibration IIAV.