We report the study of piezoelectric direct torsion actuation mechanism using lead-free piezoelectric d36 in-plane shear-mode BZT-BCT single crystals. The generated angle of twist of the piezoelectric torsion actuator was obtained from the transverse deflection measurement using a laser vibrometer. The bi-morph torsional actuator, consisting of two lead-free piezoelectric BZT-BCT in-plane shear-mode single crystals with a giant piezoelectric d36 shear strain coefficient of 1590 pC/N, provided a rate of twist of 34.12 mm/m under a quasi-static 15 V drive. The experimental benchmark was further modelled and verified by the ANSYS software using three dimensional (3D) piezoelectric finite elements. The experimental results revealed that lead-free piezoelectric BZT-BCT d36-mode single crystal is a superior candidate for piezoelectric torsion actuation. This lead-free piezoelectric BZT-BCT d36-mode torsion actuator can be effectively applied in torsional deformation control by taking into account the environmental considerations.
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30 January 2017
Research Article|
February 02 2017
Piezoelectric d36 in-plane shear-mode of lead-free BZT-BCT single crystals for torsion actuation
P. Berik;
P. Berik
a)
Department of Mechanical and Aerospace Engineering,
North Carolina State University
, Raleigh, North Carolina 27695, USA
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W.-Y. Chang
;
W.-Y. Chang
Department of Mechanical and Aerospace Engineering,
North Carolina State University
, Raleigh, North Carolina 27695, USA
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X. Jiang
X. Jiang
Department of Mechanical and Aerospace Engineering,
North Carolina State University
, Raleigh, North Carolina 27695, USA
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a)
Electronic mail: pberik@ncsu.edu
Appl. Phys. Lett. 110, 052902 (2017)
Article history
Received:
November 13 2016
Accepted:
January 23 2017
Citation
P. Berik, W.-Y. Chang, X. Jiang; Piezoelectric d36 in-plane shear-mode of lead-free BZT-BCT single crystals for torsion actuation. Appl. Phys. Lett. 30 January 2017; 110 (5): 052902. https://doi.org/10.1063/1.4975587
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