Title :
A periodic finite element formulation for the design of 2-2 composite transducers
Author :
Ballandras, S. ; Pierre, G. ; Blanc, F. ; Edoa, P.F. ; Steichen, W.
Author_Institution :
Lab. de Phys. et Metrol. des Oscillateurs, Univ. de Franche-Comte, Besancon, France
Abstract :
A procedure based on a periodic finite element analysis is proposed to optimize 2-2 composite transducers. The principle of this approach consists in reducing parasitic Lamb wave propagation which may be guided by the structure by a proper choice of volume fraction of the PZT and the polymer. This information is deduced from the dispersion curve. The validity of the theoretical analysis is checked experimentally using 2 MHz 2-2 composite transducers
Keywords :
Composite materials; Finite element analysis; Lead compounds; Piezoceramics; Polymers; Surface acoustic waves; Ultrasonic propagation; Ultrasonic transducers; 2-2 composite transducers; PZT; PbZrO3TiO3; design; dispersion curve; periodic finite element formulation; reducing parasitic Lamb wave propagation; volume fraction; Acoustic propagation; Acoustic transducers; Bandwidth; Dielectric losses; Finite element methods; Frequency; Integral equations; Piezoelectric transducers; Polymers; Probes;
Conference_Titel :
Ultrasonics Symposium, 1999. Proceedings. 1999 IEEE
Conference_Location :
Caesars Tahoe, NV
Print_ISBN :
0-7803-5722-1
DOI :
10.1109/ULTSYM.1999.849147
