Research on 1-3 Orthogonal Anisotropic Piezoelectric Composite Material Sensors-

1-3型正交异性压电复合材料传感元件的研究(英文)

Piezoelectric composite material (PCM) is an important branch of modernsensor and actuator materials with wide applications in smart structures. In this paper, based onpiezoelectric ceramic, composite and experimental mechanics theories, a kind of 1-3 orthogonalanisotropic PCM (OAPCM) sensor is developed, and the sensing principle is analyzed to describesensor behaviors. In order to determine strain and stress on isotropic or orthogonal anisotropiccomponent surface, the relationships between strain and stress are established. The experimentalresearch on 1-3 OAPCM sensor is carried out in uniaxial and biaxial stress states. The results showthat 1-3 OAPCM sensors offer orthotropic properties of piezoelectricity, and sensing equations canbe used for strain or stress measurement with good accuracy.

压电复合材料是一种重要的、具有广阔应用前景的传感和驱动材料 .本文在压电材料基本理论、复合材料设计方法和实验力学的基础上 ,构造了一种 1 3型正交异性压电复合材料传感元件 ,探讨了它的传感原理 ,推导了该种元件的传感方程和用于各向同性材料 /正交各向异性材料构件表面测量的应力应变关系 ,并在单向和双向应力状态下 ,进行了实验研究 .结果表明 :1 3型正交异性压电复合材料传感元件可应用于构件表面上某一方向的应变测量 。