DocumentCode :
3097371
Title :
A novel method to determine the electric, piezoelectric and elastic coefficients of fine scale piezoceramic fibers
Author :
Dittmer, Robert ; Rodig, Thomas ; Schonecker, A.
Author_Institution :
Dept. for Mater. Sci., Tech. Univ. Darmstadt, Darmstadt, Germany
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
174
Lastpage :
177
Abstract :
A non-contacting, non-destructive method for the characterization of small signal properties on piezoelectric single fibers is presented. The technique comprises ultrasound generation, propagation and detection within the fiber. Two electromechanically active segments are prepared by applying two pairs of ring electrodes and subsequent poling of the interspace material. Measurements are carried out in pulse-echo-mode by transmitting and receiving ultrasound with one of the two poled segments. The other segment operates under either closed or open circuit conditions causing a small time difference during runtime measurement. Applying the piezoelectric equations, the electromechanical data k33 and d33 and the elastic compliance s33 can be calculated. The practicability of the method was tested and verified for PZT fibers derived from the polysulphone process. The validity of the ultrasound runtime measurements is proved by simulation using an electromechanical model.
Keywords :
dielectric polarisation; elasticity; electrochemical electrodes; fibres; lead compounds; permittivity; piezoceramics; piezoelectricity; ultrasonic materials testing; ultrasonic propagation; PZT; PZT fibers; elastic coefficients; elastic compliance; electric coefficients; electromechanical data; electromechanically active segments; fine scale piezoceramic fibers; interspace material; noncontacting nondestructive method; piezoelectric coefficients; piezoelectric equations; polysulphone process; pulse-echo-mode measurements; ring electrodes; small signal properties; subsequent poling; ultrasound detection; ultrasound generation; ultrasound propagation; ultrasound receiving; ultrasound runtime measurements; ultrasound transmitting; Materials; Mathematical model; Optical fiber polarization; Optical fiber sensors; Runtime; Ultrasonic imaging; Ultrasonic variables measurement; guided waves; measurement; piezoelectric fiber;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
ISSN :
1948-5719
Print_ISBN :
978-1-4673-5684-8
Type :
conf
DOI :
10.1109/ULTSYM.2013.0045
Filename :
6725084
Link To Document :
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