Piezoelectric tubes and 1-3-type tubular composites as tunable actuators and sensors

Qi Ming Zhang; Hong Wang; Leslie Eric Cross

doi:10.1117/12.148480

23 July 1993 Piezoelectric tubes and 1-3-type tubular composites as tunable actuators and sensors

Qi Ming Zhang, Hong Wang, Leslie Eric Cross

Proceedings Volume 1916, Smart Structures and Materials 1993: Smart Materials; (1993) https://doi.org/10.1117/12.148480
Event: 1993 North American Conference on Smart Structures and Materials, 1993, Albuquerque, NM, United States

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.

Citation Download Citation

Qi Ming Zhang, Hong Wang, and Leslie Eric Cross "Piezoelectric tubes and 1-3-type tubular composites as tunable actuators and sensors", Proc. SPIE 1916, Smart Structures and Materials 1993: Smart Materials, (23 July 1993); https://doi.org/10.1117/12.148480

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