Arrayed Ultrasonic Transducers on Arc Surface for Plane Wave Synthesis
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概要
- 論文の詳細を見る
In ultrasonic computed tomography (UCT), it is necessary to synthesize a plane wave using waves emitted from sound sources arranged in the interior surface of a cylinder. In order to transmit a plane wave into a cylindrical surface, an ultrasonic transducer which has many vibrating elements with piezoelectric transverse effect arrayed on an arc surface is proposed. To achieve a wide beam width, the elements should have a small radiation area with a much narrow width. The measured electroacoustic efficiency for the elements was approximately 40% and the beam width defined by $-3$ dB level from the maximum was as wide as 120 deg. It was confirmed that plane wave synthesis is possible using the proposed transducer array.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2004-05-15
著者
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YAMADA Akira
Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Techn
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Ha Kang-lyeol
Department Of Electrical Engineering Faculty Of Engineering Tohoku University
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Kim Moo-joon
Department Of Physics College Of Natural Sciences Pukyong National University
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Ha Kang-Lyeol
Department of Physics, College of Natural Sciences, Pukyong National University, Pusan 608-737, Korea
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Kim Moo-Joon
Department of Physics, College of Natural Sciences, Pukyong National University, Pusan 608-737, Korea
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Kim Jung-Soon
Interdisciplinary Program of Acoustics & Vibration Engineering, Pukyong National University, Pusan 608-737, Korea
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Kim Jung-Ho
Interdisciplinary Program of Acoustics & Vibration Engineering, Pukyong National University, Pusan 608-737, Korea
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Yamada Akira
Graduate School of Bio-Applications & Systems Engineering, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
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