Title :
Losses and dispersion in ceramic piezocompozites
Author :
Rybyanets, Andrey N. ; Rybyanets, Anastasia A.
Author_Institution :
Inst. of Phys., Southern Fed. Univ., Rostov on Don, Russia
Abstract :
A comprehensive study including computer 3D simulation and experimental ultrasonic measurements of different composites structures was carried out. The results of simulation of longitudinal ultrasonic waves propagation in different visco-elastic composites (porous ceramics, ceramics/ceramics and ceramics/crystals) are presented. Anomalies of sound velocities and attenuation near corresponding elastic dispersion regions were found out. The simulation results were compared with the experimental data obtained by ultrasonic pulse-echo and through-transmit methods.
Keywords :
composite materials; dielectric losses; elasticity; lead compounds; permittivity; piezoceramics; porous materials; ultrasonic absorption; ultrasonic propagation; ultrasonic velocity; viscoelasticity; PZT; ceramic piezocomposites; computer 3D simulation; elastic dispersion; elastic properties; longitudinal ultrasonic waves propagation; piezocomposite dispersion; piezocomposite losses; porous ceramics; sound velocities; ultrasonic attenuation; viscoelastic composites; Acoustics; Ceramics; Dispersion; Frequency measurement; Impedance; Scattering; Ultrasonic variables measurement; ceramics; composite; dispersion; losses; simulation;
Conference_Titel :
Applications of Ferroelectrics (ISAF), 2010 IEEE International Symposium on the
Conference_Location :
Edinburgh
Print_ISBN :
978-1-4244-8190-3
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2010.5712250
