A new transverse piezoelectric mode 2-2 piezocomposite for underwater transducer applications

Author

Zhang, Q.M. ; Chen, J. ; Wang, H. ; Zhao, J. ; Cross, L.E. ; Trottier, M.C.

Author_Institution

Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA

Volume

42

Issue

4

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

774

Lastpage

781

Abstract

In this paper, we present a new type of 2-2 piezoelectric ceramic-polymer composite operated at the transverse piezoelectric mode (TP). The new TP mode piezocomposite has exceptionally high hydrostatic piezoelectric response, high reliability, and can be made at low cost. Based on the isostrain approximation, an analytical model is developed to analyze and optimize the effective piezoelectric and the effective elastic properties of the composite. Several composites with the new structure were fabricated and tested. The calculated and experimental results show good agreement. It is shown that a TP 2-2 composite made of PZT plates in a soft polymer matrix with elastically unidirectional face plates yields an effective hydrostatic piezoelectric coefficient d/sub h/ of 6000 (pC/N) and a hydrostatic figure of merit d/sub h/g/sub h/ higher than 30000 (10/sup -15/ m/sup 2//N).<>

Keywords

lead compounds; piezoceramics; reliability; ultrasonic transducer arrays; underwater sound; PZT; PZT plates; PbZrO3TiO3; ceramic-polymer composite; effective hydrostatic piezoelectric coefficient; elastic properties; elastically unidirectional face plates; hydrostatic figure of merit; hydrostatic piezoelectric response; isostrain approximation; piezocomposite; reliability; soft polymer matrix; transverse piezoelectric mode; underwater transducer applications; Acoustic transducers; Biomedical acoustics; Composite materials; Costs; Ferroelectric materials; Legged locomotion; Material properties; Piezoelectric materials; Piezoelectric transducers; Polymers;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/58.393119

Filename

393119