Low-Frequency Flextensional Piezoelectric Underwater Transmitter with Displacement Amplifier

Takeshi INOUE; Takatoshi NADA; Katsumi SUGIUCHI

Low-Frequency Flextensional Piezoelectric Underwater Transmitter with Displacement Amplifier

Takeshi INOUE, Takatoshi NADA, Katsumi SUGIUCHI

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A fiextensional transmitter with a hinge-lever displacement amplifier has been developed. Investigation reults for the transmitter are reported. The transmitter has a two-stage displacement amplifier. The first-stage amplifier consists of a hinge-lever mechanism. The second-stage amplifier is a tapered oval shell. An electro-mechano-acoustical equivalent circuit is derived for the transmitter. The transmitter was designed, based on the equivalent circuit, and fabricated. For only the shell part, a modal analysis by a finite element method was applied and equivalent circuit constants were calculated. Transmitter dimensions are 36 cm in diameter and 25 cm in depth. The actually obtained resonant frequency is 400 Hz, and the mechanical quality factor is 6.2. A 188 dB source level re 1 µPa at 1 meter was obtained.

Publication: IEICE TRANSACTIONS on transactions Vol.E72-E No.12 pp.1410-1416

Publication Date: 1989/12/25

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Type of Manuscript: PAPER

Category: Ultrasonics

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Takeshi INOUE
Takatoshi NADA
Katsumi SUGIUCHI

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Takeshi INOUE, Takatoshi NADA, Katsumi SUGIUCHI, "Low-Frequency Flextensional Piezoelectric Underwater Transmitter with Displacement Amplifier" in IEICE TRANSACTIONS on transactions, vol. E72-E, no. 12, pp. 1410-1416, December 1989, doi: .
Abstract: A fiextensional transmitter with a hinge-lever displacement amplifier has been developed. Investigation reults for the transmitter are reported. The transmitter has a two-stage displacement amplifier. The first-stage amplifier consists of a hinge-lever mechanism. The second-stage amplifier is a tapered oval shell. An electro-mechano-acoustical equivalent circuit is derived for the transmitter. The transmitter was designed, based on the equivalent circuit, and fabricated. For only the shell part, a modal analysis by a finite element method was applied and equivalent circuit constants were calculated. Transmitter dimensions are 36 cm in diameter and 25 cm in depth. The actually obtained resonant frequency is 400 Hz, and the mechanical quality factor is 6.2. A 188 dB source level re 1 µPa at 1 meter was obtained.
URL: https://globals.ieice.org/en_transactions/transactions/10.1587/e72-e_12_1410/_p

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@ARTICLE{e72-e_12_1410,
author={Takeshi INOUE, Takatoshi NADA, Katsumi SUGIUCHI, },
journal={IEICE TRANSACTIONS on transactions},
title={Low-Frequency Flextensional Piezoelectric Underwater Transmitter with Displacement Amplifier},
year={1989},
volume={E72-E},
number={12},
pages={1410-1416},
abstract={A fiextensional transmitter with a hinge-lever displacement amplifier has been developed. Investigation reults for the transmitter are reported. The transmitter has a two-stage displacement amplifier. The first-stage amplifier consists of a hinge-lever mechanism. The second-stage amplifier is a tapered oval shell. An electro-mechano-acoustical equivalent circuit is derived for the transmitter. The transmitter was designed, based on the equivalent circuit, and fabricated. For only the shell part, a modal analysis by a finite element method was applied and equivalent circuit constants were calculated. Transmitter dimensions are 36 cm in diameter and 25 cm in depth. The actually obtained resonant frequency is 400 Hz, and the mechanical quality factor is 6.2. A 188 dB source level re 1 µPa at 1 meter was obtained.},
keywords={},
doi={},
ISSN={},
month={December},}

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TY - JOUR
TI - Low-Frequency Flextensional Piezoelectric Underwater Transmitter with Displacement Amplifier
T2 - IEICE TRANSACTIONS on transactions
SP - 1410
EP - 1416
AU - Takeshi INOUE
AU - Takatoshi NADA
AU - Katsumi SUGIUCHI
PY - 1989
DO -
JO - IEICE TRANSACTIONS on transactions
SN -
VL - E72-E
IS - 12
JA - IEICE TRANSACTIONS on transactions
Y1 - December 1989
AB - A fiextensional transmitter with a hinge-lever displacement amplifier has been developed. Investigation reults for the transmitter are reported. The transmitter has a two-stage displacement amplifier. The first-stage amplifier consists of a hinge-lever mechanism. The second-stage amplifier is a tapered oval shell. An electro-mechano-acoustical equivalent circuit is derived for the transmitter. The transmitter was designed, based on the equivalent circuit, and fabricated. For only the shell part, a modal analysis by a finite element method was applied and equivalent circuit constants were calculated. Transmitter dimensions are 36 cm in diameter and 25 cm in depth. The actually obtained resonant frequency is 400 Hz, and the mechanical quality factor is 6.2. A 188 dB source level re 1 µPa at 1 meter was obtained.
ER -