The initial results of a test series are reported to evaluate a method for extracting the normal-incidence impedance of a locally reacting, acoustically absorbing linear located on the lower wall of a duct in a grazing-incidence, multimodal, nonprogressive acoustic wave environment without flow. This initial evaluation tests the method's ability to converge to the known normal-incidence impedance of a solid steel plate, and to the normal-incidence impedance of an absorbing test specimen whose impedance has been measured in a conventional normal-incidence tube. The method converges to the normal-incident impedance values and thus is an adequate tool for extracting the impedance of specimens in a grazing-incidence, multimodal, nonprogressive acoustic wave environment for a broad range of source frequencies.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Validation of a numerical method for extracting liner impedance


    Weitere Titelangaben:

    Überprüfung eines numerischen Verfahrens zur Ermittlung der Auskleidungsimpedanz


    Beteiligte:
    Watson, W.R. (Autor:in) / Jones, M.G. (Autor:in) / Tanner, S.E. (Autor:in) / Parrott, T.L. (Autor:in)

    Erschienen in:

    AIAA Journal ; 34 , 3 ; 548-554


    Erscheinungsdatum :

    1996


    Format / Umfang :

    7 Seiten, 12 Bilder, 2 Tabellen, 9 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Validation of a numerical method for extracting liner impedance

    Watson, Willie R. / Jones, Michael G. / Tanner, Sharon E. et al. | AIAA | 1996





    Validation of a direct propagation model for liner impedance eduction

    Primus, Julien / Simon, Frank / Piot, Estelle | AIAA | 2011