Radication Power Output for Two-Dimensional Array of Transducers in Water Using Farfield and Nearfield Techniques.

• Tomikawa Kiyotaka

• Hasegawa Akio

• Kikuchi Toshiaki

  Department of Applied Physics, National Defense Academy, Yokosuka 239, Japan

• Tsuchiya Toshio

  Japan Marine Science and Technology Center, Yokosuka 237, Japan

抄録

The radiation efficiency for a two-dimensional array of transducers is determined from the acoustic power radiated to the farfield, i.e., the farfield technique. The radiation efficiency curves can be classified into three types: (a) quadrupole type (even-even mode), (b) dipole type (even-odd mode) and (c) monopole type (odd-odd mode) as suggested by Maidanik¹⁾ for a vibrating panel. To attain a global reduction in the farfield intensity, the power output of individual transducers must be considered when designing or evaluating an active sound power control. The power output radiated from individual transducers is then determined using the nearfield technique based on the self- and mutual radiation impedances. The agreement between theoretical and experimental results is satisfactory.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 34 (5B), 2925-2929, 1995

  The Japan Society of Applied Physics

キーワード

• active acoustic control
• active sound power reduction
• self-radiation impedance
• mutual radiation impedance
• sonar transducer array
• acoustic intensity
• farfield technique
• nearfield technique

詳細情報

• CRID: 1390282681222815744
• NII論文ID: 110003955052
• NII論文ID: 210000037415
• NII論文ID: 130004521371
• NII書誌ID: AA10457675
• DOI: 10.1143/jjap.34.2925
• ISSN: 13474065
• ISSN: 00214922
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.34.2925
• Web Site: https://iopscience.iop.org/article/10.1143/JJAP.34.2925/pdf
• 本文言語コード: en
• データソース種別:
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