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Design and characterisation of 1-3 ultrasonic composites using ATILA and ultra fast laser measurements (20 MHz)

: Rödig, T.; Schönecker, A.; Hladky, A.


IEEE Ultrasonics, Ferroelectrics, and Frequency Control Society:
IEEE Ultrasonics Symposium 2005. Vol.1 : 18 - 21 September 2005, Rotterdam, The Netherlands
Piscataway, NJ: IEEE Operations Center, 2005
ISBN: 0-7803-9382-1
Ultrasonics Symposium <2005, Rotterdam>
Fraunhofer IKTS ()
piezoceramic fiber; 1-3 composites; ultrasonic; FE modelling; laser measurement

Further progress in ultrasonic technology is expected by using custom shape, high-quality, low-cost ultrasonic transducers. Therefore, 1-3 ultrasonic composites based on piezoceramic fibers have been developed. In order to make use of all advantages of piezo composites effective design and characterization tools are necessary. Here we report on the combined use of ATILA and a newly developed ultra fast scanning laser measurement system (vibrometer) such as provided by Polytec. ATILA is a finite element software tool, which is able to simulate coupled piezoelectric, electromechanical and acoustic field problems. The laser vibrometer allows to measure in-plane movements as well as sound field. The present paper is focused on 1-3 composites based on piezoceramic fibers.
First simulated and measured data, e.g. spectrum, resonant frequency and anti-resonant frequency as well as the mode shapes for different frequencies have been collected. The modeled and measured data agree completely. Furthermore new effects of lateral waves of 1-3 composites have been measured and are discussed in the paper.