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研究了金属端帽尺寸对压电复合换能器Ｃｙｍｂａｌ位移的影响。Ｃｙｍｂａｌ由在厚度方向极化的压电陶瓷片（ＰＺＴ－５Ａ）夹在两个薄的黄铜端帽之间，每一个端帽的内表面都有一个圆台形空穴。在施加交流电场下，陶瓷径向收缩，端帽弹性运动，在法向于端帽的方向产生一个放大的位移。Ｃｙｍｂａｌ换能器比相同尺寸的陶瓷元件的位移要高出近４０倍。
The effect of metal end cap size on the displacement of Cymbal piezoelectric composite transducer was investigated. Cymbal is sandwiched between two thin brass end caps by a PZT-5A, polarized in the thickness direction, with a frusto-conical cavity on the inner surface of each end cap. In the application of AC electric field, the ceramic shrinks radially and the end cap elastically moves to produce an enlarged displacement in a direction normal to the end cap. Cymbal transducers are nearly 40 times more displaced than ceramic components of the same size.