Abstract
Abstract The force-electric coupling relationship of the mechanical and electrical properties of piezoelectric composites has been the main factor in the research and development of piezoelectric composites in practical application. A novel orthotropic piezoelectric composite material (OPCM) element is studied in this paper. The properties of the piezoelectric phase and the polymer phase and the influence of the geometrical dimensions of the OPCM on the longitudinal wave drive element are analyzed from the perspective of mechanics and electric power, respectively, and the structural design is optimized. This provides a theoretical basis for the development of OPCM and of new longitudinal ultrasonic phased array actuators.
Highlights
At present, the key material for the conventional phased array transmitting and receiving devices is an ordinary piezoelectric ceramic material
A novel orthotropic piezoelectric composite material (OPCM) element is studied in this paper
As the dielectric constant of the polymer phase in the piezoelectric composite material is very low, the dielectric constant of the entire OPCM element is mainly determined in the piezoelectric phase
Summary
The key material for the conventional phased array transmitting and receiving devices is an ordinary piezoelectric ceramic material. The author group who developed the 1-1-type orthotropic piezoelectric composite material (OPCM) sensor, which was first used for engineering structural damage identification active monitoring [21,22,23], had made an achievement. This group has developed an S-type piezoelectric micro-displacement amplifier actuator and micro-band orthogonal anisotropic – acoustic emission sensor [24], and upon verification, its drive performance was better than that of conventional PZT actuator. The influence of the characteristics of the phase material and the structure size on the performance of the OPFC drive element is analyzed by CONSOL finite element simulation platform, and its optimal parameters are obtained, which provide guidance for further research on the new ultrasonic phased array transducer
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