Underwater sound radiation from an elastically coated plate with a discontinuity introduced by a signal conditioning plate

Yanni Zhang, Jie Pan

    Research output: Contribution to journalArticle

    13 Citations (Scopus)

    Abstract

    Underwater structural sound radiation and reflection can be reduced by adding an elastic coating to a structure. To increase the signal-to-noise ratio of a detecting hydrophone placed in front of the coating, a signal conditioning plate (SCP) of finite size placed between the coating and the hydrophone is proposed to increase the local reflection of incoming sound. This paper studies the effects of a SCP as a distributed discontinuity on the general properties of the sound radiation of a coated plate. The discontinuity introduced by the SCP changes the vibration and radiated sound power of the coated plate by scattering and reflecting structural waves in the coating. The trapped modal response of the structural waves is also observed and found to be responsible for the increase of sound and vibration of the plate at the corresponding resonance frequencies. © 2013 Acoustical Society of America.
    Original languageEnglish
    Pages (from-to)173-185
    JournalJournal of the Acoustical Society of America
    Volume133
    Issue number1
    DOIs
    Publication statusPublished - 2013

    Fingerprint

    underwater acoustics
    conditioning
    discontinuity
    radiation
    acoustics
    coatings
    hydrophones
    vibration
    modal response
    Conditioning
    Underwater
    Radiation
    Discontinuity
    Sound
    signal to noise ratios
    scattering

    Cite this

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    title = "Underwater sound radiation from an elastically coated plate with a discontinuity introduced by a signal conditioning plate",
    abstract = "Underwater structural sound radiation and reflection can be reduced by adding an elastic coating to a structure. To increase the signal-to-noise ratio of a detecting hydrophone placed in front of the coating, a signal conditioning plate (SCP) of finite size placed between the coating and the hydrophone is proposed to increase the local reflection of incoming sound. This paper studies the effects of a SCP as a distributed discontinuity on the general properties of the sound radiation of a coated plate. The discontinuity introduced by the SCP changes the vibration and radiated sound power of the coated plate by scattering and reflecting structural waves in the coating. The trapped modal response of the structural waves is also observed and found to be responsible for the increase of sound and vibration of the plate at the corresponding resonance frequencies. {\circledC} 2013 Acoustical Society of America.",
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    TY - JOUR

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    AU - Zhang, Yanni

    AU - Pan, Jie

    PY - 2013

    Y1 - 2013

    N2 - Underwater structural sound radiation and reflection can be reduced by adding an elastic coating to a structure. To increase the signal-to-noise ratio of a detecting hydrophone placed in front of the coating, a signal conditioning plate (SCP) of finite size placed between the coating and the hydrophone is proposed to increase the local reflection of incoming sound. This paper studies the effects of a SCP as a distributed discontinuity on the general properties of the sound radiation of a coated plate. The discontinuity introduced by the SCP changes the vibration and radiated sound power of the coated plate by scattering and reflecting structural waves in the coating. The trapped modal response of the structural waves is also observed and found to be responsible for the increase of sound and vibration of the plate at the corresponding resonance frequencies. © 2013 Acoustical Society of America.

    AB - Underwater structural sound radiation and reflection can be reduced by adding an elastic coating to a structure. To increase the signal-to-noise ratio of a detecting hydrophone placed in front of the coating, a signal conditioning plate (SCP) of finite size placed between the coating and the hydrophone is proposed to increase the local reflection of incoming sound. This paper studies the effects of a SCP as a distributed discontinuity on the general properties of the sound radiation of a coated plate. The discontinuity introduced by the SCP changes the vibration and radiated sound power of the coated plate by scattering and reflecting structural waves in the coating. The trapped modal response of the structural waves is also observed and found to be responsible for the increase of sound and vibration of the plate at the corresponding resonance frequencies. © 2013 Acoustical Society of America.

    U2 - 10.1121/1.4768867

    DO - 10.1121/1.4768867

    M3 - Article

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    SP - 173

    EP - 185

    JO - Journal of Acoustical Society of America

    JF - Journal of Acoustical Society of America

    SN - 0001-4966

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    ER -