BRADFORD SCHOLARS

    • Sign in
    View Item 
    •   Bradford Scholars
    • Engineering and Digital Technology
    • Engineering and Digital Technology Publications
    • View Item
    •   Bradford Scholars
    • Engineering and Digital Technology
    • Engineering and Digital Technology Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Bradford ScholarsCommunitiesAuthorsTitlesSubjectsPublication DateThis CollectionAuthorsTitlesSubjectsPublication Date

    My Account

    Sign in

    HELP

    Bradford Scholars FAQsCopyright Fact SheetPolicies Fact SheetDeposit Terms and ConditionsDigital Preservation Policy

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Acoustic characterization of graded porous materials under the rigid frame approximation

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Publication date
    2013
    Author
    Groby, J-P.
    Dazel, O
    De Ryck, L
    Khan, Amir
    Horoshenkov, Kirill V.
    Keyword
    Porous materials; Acoustical properties; Manufacturing; Acoustic modelling; Green's function methods
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    Graded porous materials are of growing interest because of their ability to improve the impedance matching between air and material itself. Theoretical models have been developed to predict the acoustical properties of these media. Traditionally, graded materials have been manufactured by stacking a discrete number of homogeneous porous layers with different pore microstructure. More recently a novel foaming process for the manufacturing of porous materials with continuous pore stratification has been developed. This paper reports on the application of the numerical procedure proposed by De Ryck to invert the parameters of the pore size distribution from the impedance tube measurements for materials with continuously stratified pore microstructure. Specifically, this reconstruction procedure has been successfully applied to retrieve the flow resistivity and tortuosity profiles of graded porous materials manufactured with the method proposed by Mahasaranon et al. In this work the porosity and standard deviation in pore size are assumed constant and measured using methods which are applied routinely for homogenous materials characterisation. The numerical method is based on the wave splitting together with the transmission Green's functions approach, yielding an analytical expression of the objective function in the Least-square sense.
    URI
    http://hdl.handle.net/10454/9659
    Version
    No full-text available in the repository
    Citation
    Groby J-P, Dazel O, De Ryck L, Khan A and Horoshenkov KV (2013) Acoustic characterization of graded porous materials under the rigid frame approximation. Proceedings of Meetings on Acoustics (POMA). 19(1): 065009.
    Link to publisher’s version
    http://dx.doi.org/10.1121/1.4799688
    Type
    Article
    Collections
    Engineering and Digital Technology Publications

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.