Title :
Concave cymbal transducers
Author :
Zhang, Jindong ; Hughes, W. Jack ; Hladky-Hennion, A.C. ; Newnham, Robert E.
Author_Institution :
Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA
Abstract :
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 cm×5.5 cm and weight of only 30 g, a transmitting voltage response of around 125 dB re 1 μPa/V@1 m was obtained over a frequency range between 20 and 50 kHz
Keywords :
high-pressure techniques; lead compounds; piezoceramics; piezoelectric transducers; ultrasonic transducer arrays; ultrasonic transducers; underwater sound; 20 to 50 kHz; 6 MPa; PZT; PZT ceramic ring; PbZrO3TiO3; concave cymbal transducer; flextensional transducer; hydrostatic pressure; piezoelectric coefficient; planar array; underwater acoustics; voltage response; Bonding; Ceramics; Fabrication; Frequency; Impedance; Laboratories; Lifting equipment; Materials reliability; Piezoelectric transducers; Shape;
Conference_Titel :
Applications of Ferroelectrics, 1998. ISAF 98. Proceedings of the Eleventh IEEE International Symposium on
Conference_Location :
Montreux
Print_ISBN :
0-7803-4959-8
DOI :
10.1109/ISAF.1998.786682
