TY - JOUR
T1 - Electromechanical nonlinearities and losses in piezoelectric sonar transducer materials
AU - Sherlock, Nevin P.
AU - Meyer, Richard J.
N1 - Funding Information:
The authors thank Trs Technologies Inc. for providing the single crystals investigated in this work. This work was supported by the office of naval research (onr, arlington, Va), and the views contained do not necessarily reflect onr opinion or policy.
PY - 2012
Y1 - 2012
N2 - Next-generation sonar projectors rely on piezoelectric single crystals such as lead magnesium niobate-lead titanate to induce mechanical strain and generate ever greater acoustic output, but the performance of these materials under high-power operation is not well understood. As the electrical driving force increases, the linear piezoelectric relationships give way to nonlinear, amplitude-dependent properties. Such behavior is impossible to predict solely from small signal, linear measurements. This work has characterized the behavior of single crystals by examining the dynamic relaxation from initial strain levels of 0.1 to 0.2%. Strain-dependent values of the mechanical quality factor and resonance frequency are reported for single crystals, and these properties are compared with conventional high-power piezoceramics.
AB - Next-generation sonar projectors rely on piezoelectric single crystals such as lead magnesium niobate-lead titanate to induce mechanical strain and generate ever greater acoustic output, but the performance of these materials under high-power operation is not well understood. As the electrical driving force increases, the linear piezoelectric relationships give way to nonlinear, amplitude-dependent properties. Such behavior is impossible to predict solely from small signal, linear measurements. This work has characterized the behavior of single crystals by examining the dynamic relaxation from initial strain levels of 0.1 to 0.2%. Strain-dependent values of the mechanical quality factor and resonance frequency are reported for single crystals, and these properties are compared with conventional high-power piezoceramics.
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U2 - 10.1109/TUFFC.2012.2367
DO - 10.1109/TUFFC.2012.2367
M3 - Article
C2 - 22899109
AN - SCOPUS:84865342904
SN - 0885-3010
VL - 59
SP - 1618
EP - 1623
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 8
M1 - 6264126
ER -