The behaviour of a number of 3-1 connectivity piezoelectric composite plate transducers is presented. The fundamental thickness mode resonance of such devices is found to be contaminated by lateral resonant activity; this is evidenced in the measured and predicted electrical impedance profile and the surface displacement data at the,fundamental thickness mode. Measurements taken on the 3-1 devices infer that they are not acting as true composites. In addition to this the finite element technique is applied to a number of stacked 3-1 and 1-3 connectivity devices to predict the mechanical Q-factor, and hence bandwidth, as a function of polymer filler properties.
|Number of pages||4|
|Publication status||Published - Oct 2002|
|Event||IEEE International Ultrasonic Symposium - Munich, Germany|
Duration: 8 Oct 2002 → 11 Oct 2002
|Conference||IEEE International Ultrasonic Symposium|
|Period||8/10/02 → 11/10/02|
- multilayered piezoelectric composites