• Login
    View Item 
    •   Shocker Open Access Repository Home
    • Engineering
    • Aerospace Engineering
    • AE Research Publications
    • View Item
    •   Shocker Open Access Repository Home
    • Engineering
    • Aerospace Engineering
    • AE Research Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Effect of particle size on sound absorption behavior of granular aerogel agglomerates

    Date
    2022-12-15
    Author
    Dasyam, Amrutha
    Xue, Yutong
    Bolton, J. Stuart
    Sharma, Bhisham N.
    Metadata
    Show full item record
    Citation
    Dasyam, A., Xue, Y., Bolton, J. S., & Sharma, B. (2022). Effect of particle size on sound absorption behavior of granular aerogel agglomerates. Journal of Non-Crystalline Solids, 598, 121942. https://doi.org/https://doi.org/10.1016/j.jnoncrysol.2022.121942
    Abstract
    We investigate the sound absorption characteristics of granular aerogel agglomerates of various particle sizes. The normal incidence sound absorption coefficients of six commercially available silica aerogels with different particle size distributions are measured using a two-microphone normal incidence impedance tube. The measurements show a strong correlation between the particle size and sound absorption behavior and reveal important differences between the sound absorption trends of granular aerogel particles larger than 100 μm and those smaller than 50 μm. These differences are further investigated using an inverse characterization method to extract the representative bulk properties necessary to model such agglomerates using the Johnson-Champoux-Allard formulation. Our results show that while agglomerates of larger aerogel granules can be modeled as limp porous media, smaller aerogel granules require a poro-elastic formulation. Further, we show that the inclusion of a logarithmically decreasing dynamic loss factor improves the low-frequency sound absorption predictions of the sub-50 μm aerogels.
    Description
    Click on the DOI to access this article (may not be free).
    URI
    https://doi.org/10.1016/j.jnoncrysol.2022.121942
    https://soar.wichita.edu/handle/10057/24139
    Collections
    • AE Research Publications

    Browse

    All of Shocker Open Access RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsBy TypeThis CollectionBy Issue DateAuthorsTitlesSubjectsBy Type

    My Account

    LoginRegister

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    DSpace software copyright © 2002-2023  DuraSpace
    DSpace Express is a service operated by 
    Atmire NV