中文摘要：

针对1-3型正交异性压电陶瓷纤维复合材料（Piezoceramics Fiber Composite,PFC）的构造原理,通过建立有限元模型,分析了叉指形电极关键尺寸和压电陶瓷纤维直径等对其传感性能的影响,并通过实验对制备的1-3型PFC传感元件的正交异性特性进行了验证,仿真及实验结果表明该传感元件具有明显的正交异性,能区分不同方向的应力波,减小电极中心距和纤维直径能提高传感元件的传感性能。

英文摘要：

The piezoceramics composite possesses wide application prospect for its specific electric-mechanical and designable properties and its characteristic of overcoming the brittleness that single piezoelectric ceramics material has. The structure principle of 1-3 mode orthotropic piezoelectric fiber composite （PFC） is proposed. By finite element modeling, the influences of the key dimensions of interdigital electrode and the diameter of piezoelectric fiber on its sensing property are analyzed. In addition, the orthotropic characteristic is verified through experiment. The results show that the sensor has obvious orthotropic characteristic and can distinguish stress wave from different directions. We also found that the sensor performance can be improved by reducing the fiber diameter and the center distance of the electrode.