壓電陶瓷鉛鋯鈦酸鹽(PZT)／聚合物(Polymer)所做成的複合材料近來廣被利用在醫學診斷用的換能器(transducer)，因爲它有根高的機電耦合常數、多種的介電常數可供選擇，低機電損耗及接近肉體的聲阻抗等優點。本文在探討1-3連結的鉛鋯鈦酸鹽／聚合物的複合板的厚度振動，其共振頻率和陶瓷／聚合物的容積比之間的關係。從經簡化過的複合板的厚度振動運動方程式及邊界條件導出共振條件的方程式，進而以PZT及Spurr之複合板之實例繪出沿厚度方向之波速及共振頻率和陶瓷／聚合物的容積比之間的關係
Recently the 1-3 piezoelectric ceramic/polymer composite material has been widely used in medical diagnostic imagining transducer due to its superior properties such as high electromechanical coupling constant, wide selection of dielectric constant, low electrical and mechanical losses and low acoustic impedance. In this paper we are concerned with thickness vibration of 1-3 connectivity piezoelectric ceramic/polymer composite plate Equations of motion and boundary conditions for a composite plate are formed, resonance frequency equation is derived. Numerical results for the wave velocity along the ceramic rod direction and the resonance angular frequency versus ceramic volume fraction are presented for PZT5/Spurr epoxy.
