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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%2F10%3A63509246" target="_blank" >RIV/70883521:28110/10:63509246 - 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, Břeclav, 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 Republic) having varying air flow resistivity. Acoustic reactance of porous insulating materials is determined 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 resistivity.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 based

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BI - Acoustics and oscillation

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2010

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Acta Avionica

  • ISSN

    1335-9479

  • e-ISSN

  • Volume of the periodical

    12

  • Issue of the periodical within the volume

    20

  • Country of publishing house

    SK - SLOVAKIA

  • Number of pages

    6

  • Pages from-to

  • UT code for WoS article

  • EID of the result in the Scopus database