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Sound damping properties of PUR/nano fabric sandwich structures

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F09%3A63508067" target="_blank" >RIV/70883521:28110/09:63508067 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Sound damping properties of PUR/nano fabric sandwich structures

  • Original language description

    Open cell polyurethane (PUR) foams (Gumotex, Breclav, Czech Republic) of varying pore size distribution were tested for sound damping in the perpendicular incident sound wave geometry by means of Kundt´s tube measurements in the frequency range of 50-6400 Hz. Tested samples were modified by coating the top layer by nano non-woven fabric of PUR bases (SPUR, Zlin, Czech Republic) produced by means of Nanospider technology (ELMARCO, Liberec, Czech Re-public) having varying air flow resistivity. Acoustic reactance of porous insulating materials is de-termined by layer thickness and in the lesser extent by surface density of the air permeable surface film coating. Acoustic resistance of the porous insulating material is determined by the air flow re-sistivity. This study allow to characterize the effect of the mutual influence of acoustic resistance and acoustic reactance components of the complex acoustic impedance on final sound damping characteristics of the studied sandwich like PUR bas

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BI - Acoustics and oscillation

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2009

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    Proceedings of the 16th International Congress on Sound and Vibration. Recent Developments in Acoustics, Noise and Vibration

  • ISBN

    978-83-60716-71-7

  • ISSN

  • e-ISSN

  • Number of pages

    8

  • Pages from-to

  • Publisher name

    International Institute of Acoustics and Vibration (PL)

  • Place of publication

    Krakow

  • Event location

    Krakow

  • Event date

    Jul 9, 2009

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article