Title :
Multifrequency (1-3) piezoelectric composites
Author :
Sanchez, M.S. ; De Espinosa, F. R Montero ; Emeterio, J. L San
Author_Institution :
Inst. de Acustica CSIC, Madrid, Spain
Abstract :
A (1-3) piezoelectric composite with a new geometry has been studied. The composite has ceramic bars with different cross sections. The selection of the bars´ width-to-thickness ratio is made using the coupling mode theory. The resonant frequency dispersion of the different bars produces an enlargement of the acoustic bandwidth of about a 30% without losing sensitivity. The composite is modeled by a parallel connection of equivalent circuits
Keywords :
ceramics; composite materials; piezoelectric materials; 1-3) piezoelectric composite; acoustic bandwidth; ceramic bars; coupling mode theory; cross sections; equivalent circuits; multifrequency composites; parallel connection; resonant frequency dispersion; sensitivity; width-to-thickness ratio; Bars; Ceramics; Composite materials; Conducting materials; Coupling circuits; Dielectric constant; Geometry; Performance analysis; Q factor; Resonant frequency;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200197
