中文摘要：

建立声发射（AE）信号的有限元（FEM）数值模拟模型，研究正交异性压电复合材料（OPCM）对模拟AE源的动态传感特性。采用对结构施加脉冲载荷获得OPCM对瞬态AE信号时域响应特性，采用扫频正弦形式的集中力载荷获得OPCM对连续AE信号的频域响应特性，最后设计实验进行对比。研究表明，OPCM对同平面内瞬态和不同频率连续AE信号具有横观各向异性传感特性。

英文摘要：

FEM（Finite Element Model） numerical model of AE（Acoustic Emission） signal has been established and the dynamic AE sense characteristics of OPCM （Orthotropic Piezoelectric Composite Materials） has been researched. The sense characteristics in time domain of OPCM to the simulating AE signal were acquired by loading a pulse to the model, and the sense characteristics in frequency domain of OPCM to continue simulating AE signal were acquired by centralized impulsion in sine scan frequency model. A experiment was designed to contrast the simulating results in the end. The results showed that the OPCM sensor has different frequency characteristics to orthotropic AE signal in the same plane.