What is the frequency limit of piezoceramic sheet?
There is no inherent frequency limit for a piezoceramic sheet. In practice the frequency limits of applications are usually determined by resonances associated with the shape and/or size of the transducer design. A typical 2.85″ square, .0075″ thick sheet of PSI-5A material has a thickness mode vibration in the neighborhood of 13 MHz and a planar dilatation mode at around 14 KHz. At ultrasonic frequencies large surface area parts draw considerable current and resistive heating of the electrodes becomes the limiting factor.
A. There is no inherent frequency limit for a piezoceramic sheet. In practice the frequency limits of signal applications are usually determined by resonances associated with the shape and/or size of the transducer design. A typical sheet of PSI-5A material has a thickness mode vibration in the neighborhood of 13 MHz and a planar dilatation mode at around 14 KHz. At ultrasonic frequencies large surface area parts draw considerable current and resistive heating of the electrodes becomes the limiting factor. Q.
