Concave cymbal transducers

被引：22
作者：
Zhang, JD [1 ]
Hughes, WJ
Hladky-Hennion, AC
Newnham, RE
机构：
[1] Penn State Univ, Mat Res Lab 254, University Pk, PA 16802 USA
[2] Penn State Univ, Appl Res Lab, University Pk, PA 16802 USA
[3] IEMN, Dept ISEN, F-59046 Lille, France
来源：
MATERIALS RESEARCH INNOVATIONS | 1999年 / 2卷 / 05期
关键词：
piezoelectricity; underwater transducer; flextensional transducer; ring-shell transducer; electroacoustic transducer; hydrophone; sensor; sound projector; transducer array; transducer modeling;
D O I：
10.1007/s100190050094
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new type of cymbal transducer, called the concave cymbal, has been developed to increase the pressure tolerance and reliability of the transducer under high hydrostatic pressure. The main feature of the new design is a lead zirconate titanate ceramic ring sandwiched between two concave metal endcaps. It shows much improved pressure performance and can withstand a pressure of up to 6 MPa while maintaining high effective hydrostatic piezoelectric coefficients. When incorporated into a planar array with a radiating area of 5.5 cmx5.5 cm and weight of only 30 g, a transmitting voltage response of around 125 dB re 1 mu Pa/V @ 1 m was obtained over a frequency range between 20 and 50 kHz.
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页码：252 / 255
页数：4
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