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Proceedings Paper

Piezoelectric tubes and 1-3-type tubular composites as tunable actuators and sensors
Author(s): Qi Ming Zhang; Hong Wang; Leslie Eric Cross
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Paper Abstract

Piezoelectric actuators and sensors made of tubular structure can provide a great agility of the effective response in the radial direction. For a radially poled piezoelectric tube, the effective piezoelectric constant in that direction can be tuned to be positive, zero, and negative by varying the ratio of the outer radius (R0) to the inner radius (r0) of the tube. For a suitable ratio of R0/r0, this effective constant can also be changed in sign or set to zero by adjusting the dc bias field level for tubes made of electrostrictive materials. Therefore, one can make a piezoelectric transducer with all the effective piezoelectric tensile constants having the same sign. The end capped thin wall tubes also exhibit exceptionally high hydrostatic response and the small size of the tubular structure makes it very suitable for integration into 1 - 3 composite which possesses low acoustic impedance and high hydrostatic response.

Paper Details

Date Published: 23 July 1993
PDF: 11 pages
Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993); doi: 10.1117/12.148480
Show Author Affiliations
Qi Ming Zhang, The Pennsylvania State Univ. (United States)
Hong Wang, The Pennsylvania State Univ. (United States)
Leslie Eric Cross, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 1916:
Smart Structures and Materials 1993: Smart Materials
Vijay K. Varadan, Editor(s)

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