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Investigating the thermal stability of 1-3 piezoelectric composite transducers by varying the thermal conductivity and glass transition temperature of the polymeric filler material

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6 Author(s)
Parr, A.C.S. ; Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK ; O'Leary, R.L. ; Hayward, G. ; Benny, S.
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The thermal behaviour of a number of 1-3 piezoelectric composite transducers is discussed. In particular, devices manufactured from a polymer filler with a relatively high glass to rubber transition temperature (Tg), and from polymer systems with increased thermal conductivity, are evaluated. The mechanical properties of the various filler materials were obtained via ultrasonic measurements, with the thermal properties extracted using dynamic mechanical thermal analysis (dmta), differential scanning calorimetry (dsc) and laserflash studies. A range of ultrasonic transducers were then constructed and their thermal stability studied using a combination of impedance analysis and laser surface displacement measurement.

Published in:

Ultrasonics Symposium, 2002. Proceedings. 2002 IEEE  (Volume:2 )

Date of Conference:

8-11 Oct. 2002