Inverse and reciprocity methods for experimental determination of radiation modes.

Arthur P. Berkhoff, Edin Sarajlic, B.S. Cazzolato, C.H. Hansen

    Research output: Contribution to conferencePaper

    Abstract

    Experimental methods are presented for the problem of finding the vibration patterns of a structure that radi-ate sound most efficiently. These vibration patterns, the so-called radiation modes, diagonalize the acoustic radiation operator and therefore radiate independently. The methods that are considered are reciprocity methods, inverse methods and a combination of these methods. The reciprocity technique is applied to the problem of finding the radiation modes for velocity sensing that contribute to the potential energy in an enclosure. Measured results agree with simulated results. Using an inverse technique, it is shown that the radiation modes for sensing with an array of piezoelectric patch sensors can be found. Improved results can be obtained by combining the inverse method with a reciprocal technique for measuring some of the transfer functions.
    Original languageUndefined
    Pages1629-1636
    Number of pages8
    Publication statusPublished - 2001

    Keywords

    • IR-62436
    • EWI-13287

    Cite this

    Berkhoff, A. P., Sarajlic, E., Cazzolato, B. S., & Hansen, C. H. (2001). Inverse and reciprocity methods for experimental determination of radiation modes.. 1629-1636.
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    abstract = "Experimental methods are presented for the problem of finding the vibration patterns of a structure that radi-ate sound most efficiently. These vibration patterns, the so-called radiation modes, diagonalize the acoustic radiation operator and therefore radiate independently. The methods that are considered are reciprocity methods, inverse methods and a combination of these methods. The reciprocity technique is applied to the problem of finding the radiation modes for velocity sensing that contribute to the potential energy in an enclosure. Measured results agree with simulated results. Using an inverse technique, it is shown that the radiation modes for sensing with an array of piezoelectric patch sensors can be found. Improved results can be obtained by combining the inverse method with a reciprocal technique for measuring some of the transfer functions.",
    keywords = "IR-62436, EWI-13287",
    author = "Berkhoff, {Arthur P.} and Edin Sarajlic and B.S. Cazzolato and C.H. Hansen",
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    Berkhoff, AP, Sarajlic, E, Cazzolato, BS & Hansen, CH 2001, 'Inverse and reciprocity methods for experimental determination of radiation modes.' pp. 1629-1636.

    Inverse and reciprocity methods for experimental determination of radiation modes. / Berkhoff, Arthur P.; Sarajlic, Edin; Cazzolato, B.S.; Hansen, C.H.

    2001. 1629-1636.

    Research output: Contribution to conferencePaper

    TY - CONF

    T1 - Inverse and reciprocity methods for experimental determination of radiation modes.

    AU - Berkhoff, Arthur P.

    AU - Sarajlic, Edin

    AU - Cazzolato, B.S.

    AU - Hansen, C.H.

    PY - 2001

    Y1 - 2001

    N2 - Experimental methods are presented for the problem of finding the vibration patterns of a structure that radi-ate sound most efficiently. These vibration patterns, the so-called radiation modes, diagonalize the acoustic radiation operator and therefore radiate independently. The methods that are considered are reciprocity methods, inverse methods and a combination of these methods. The reciprocity technique is applied to the problem of finding the radiation modes for velocity sensing that contribute to the potential energy in an enclosure. Measured results agree with simulated results. Using an inverse technique, it is shown that the radiation modes for sensing with an array of piezoelectric patch sensors can be found. Improved results can be obtained by combining the inverse method with a reciprocal technique for measuring some of the transfer functions.

    AB - Experimental methods are presented for the problem of finding the vibration patterns of a structure that radi-ate sound most efficiently. These vibration patterns, the so-called radiation modes, diagonalize the acoustic radiation operator and therefore radiate independently. The methods that are considered are reciprocity methods, inverse methods and a combination of these methods. The reciprocity technique is applied to the problem of finding the radiation modes for velocity sensing that contribute to the potential energy in an enclosure. Measured results agree with simulated results. Using an inverse technique, it is shown that the radiation modes for sensing with an array of piezoelectric patch sensors can be found. Improved results can be obtained by combining the inverse method with a reciprocal technique for measuring some of the transfer functions.

    KW - IR-62436

    KW - EWI-13287

    M3 - Paper

    SP - 1629

    EP - 1636

    ER -