Design of the Double Ultrasonic Transducer for Nonlinearity Measurement of Acoustic Waves
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概要
- 論文の詳細を見る
In this paper, we propose and design a new ultrasonic probe that can effectively measure both the fundamental and the second-harmonic waves simultaneously. The transducer consists of two bonded Pb(Zr, Ti)O3 (PZT) disks with the same properties and the same polarization, and a variable capacitor is connected to the electric terminals of one of the PZT disks for the simulation and experiment. It is shown that the second harmonic as well as the fundamental component can be efficiently received by controlling the capacitance. The result of the nonlinearity parameter B/A for ethanol measured using the double ultrasonic transducer shows good agreement with the reference value, and the B/A value for soybean is obtained.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2001-05-30
著者
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Kim Jung-ho
Department Of Acousitics And Vibration Engineering Pukyong National University
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KIM Chun-Duck
Department of Electrical Engineering, Faculty of Engineering, Pukyong National University
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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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Chubachi Noriyoshi
Faculty Of Engineering Tohoku Gakuin University
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Chubachi Noriyoshi
Faculty of Engineering, Tohoku Gakuin University, Tagajo 985-0873, Japan
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Kim Chun-Duck
Department of Electrical Engineering, Pukyong National University, Pusan 608-739, Korea
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Ha Kang-Lyeol
Department of Physics, Faculty of Natural Science, Pukyong National University, Pusan 608-737, Korea
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Kim Jung-Ho
Department of Electrical Engineering, Pukyong National University, Pusan 608-739, Korea
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