Measured anisotropic air flow resistivity and sound attenuation of glass wool

Viggo Tarnow

    Research output: Contribution to journalJournal articleResearchpeer-review

    2203 Downloads (Pure)

    Abstract

    Department of Mechanical Engineering, Technical University of Denmark, Bygning 358, DK 2800 Lyngby, Denmark The air flow resistivity of glass wool has been measured in different directions. The glass wool was delivered from the manufacturer as slabs measuring 100×600×900 mm3, where the surface 600×900 mm2 was parallel with the conveyor belt used in the manufacturing. Directions in the glass wool are described by a coordinate system with the X axis perpendicular to the conveyor belt, the Z axis in the direction the conveyor belt moves, and the Y axis perpendicular to the two other axes. It was found that the resistivities in the Y and Z directions were equal in all cases. For density 14 kg/m3 the mean resistivity in the X direction was 5.88 kPa s m**2 and in the Y direction 2.94 kPa s m**2. For density 30 kg/m3 the mean resistivity in the X direction was 15.5 kPa s m**2 and in the Y direction 7.75 kPa s m**2. A formula for prediction of resistivity for other densities is given. By comparing measured values of sound attenuation with results calculated from resistivity data, it is demonstrated that the measured attenuation can be predicted in a simple manner. ©2002 Acoustical Society of America. PACS: 43.58.Vb, 43.20.Jr, 43.55.Ev
    Original languageEnglish
    JournalAcoustical Society of America. Journal
    VolumeVol. 111
    Issue number6
    Pages (from-to)pp. 2735-2739
    ISSN0001-4966
    DOIs
    Publication statusPublished - 2002

    Bibliographical note

    Copyright (2002) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

    Fingerprint

    Dive into the research topics of 'Measured anisotropic air flow resistivity and sound attenuation of glass wool'. Together they form a unique fingerprint.

    Cite this