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    On the simultaneous inversion of micro-perforated panels' parameters: application to single and double air-cavity backed systems

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    Authors
    Tayong-Boumda, Rostand
    Manyo Manyo, Jacques A.
    Siryabe, Emmanuel
    Ntamack, Guy E.
    Affiliation
    University of Bristol
    Université de Ngaoundéré
    Université du Havre
    Issue Date
    2018-04-20
    Subjects
    Micro-Perforated Panel (MPP) systems
    
    Metadata
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    Abstract
    This study deals with the deduction of parameters of Micro-Perforated Panel (MPP) systems from impedance tube data. It is shown that there is an ambiguity problem that exists between the MPP thickness and its open area ratio. This problem makes it difficult to invert the reflection coefficient data fitting and therefore to deduct the MPP parameters. A technique is proposed to reduce this ambiguity by using an equation that links the hole diameter to the open area ratio. Reflection coefficient data obtained for two specimens with different characteristics is employed for searching the MPP parameters using a simulated annealing algorithm. The results obtained demonstrate the effectiveness of this technique.
    Citation
    Tayong RB, Manyo Manyo JA, Siryabe E, Ntamack GE (2018) 'On the simultaneous inversion of micro-perforated panels' parameters: application to single and double air-cavity backed systems', Journal of the Acoustical Society of America, 143 (4), pp.2279-2288.
    Publisher
    Acoustical Society of America
    Journal
    Journal of the Acoustical Society of America
    URI
    http://hdl.handle.net/10547/624695
    DOI
    10.1121/1.5032312
    PubMed ID
    29716238
    Additional Links
    https://asa.scitation.org/doi/10.1121/1.5032312
    Type
    Article
    Language
    en
    ISSN
    0001-4966
    ae974a485f413a2113503eed53cd6c53
    10.1121/1.5032312
    Scopus Count
    Collections
    Engineering

    entitlement

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