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《东南大学学报(英文版)》 2002-02
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Research on 1-3 Orthogonal Anisotropic Piezoelectric Composite Material Sensors-

Xiong Ke 1 Zhang Weigong 2 Luo Ying 3( 1The Key Laboratory for Smart Materials and Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)( 2Department of Instrument Science and Engineering, Southeast Univer  
Piezoelectric composite material (PCM) is an important branch of modern sensor and actuator materials with wide applications in smart structures. In this paper, based on piezoelectric ceramic, composite and experimental mechanics theories, a kind of 1 3 orthogonal anisotropic PCM (OAPCM) sensor is developed, and the sensing principle is analyzed to describe sensor behaviors. In order to determine strain and stress on isotropic or orthogonal anisotropic component surface, the relationships between strain and stress are established. The experimental research on 1 3 OAPCM sensor is carried out in uniaxial and biaxial stress states. The results show that 1 3 OAPCM sensors offer orthotropic properties of piezoelectricity, and sensing equations can be used for strain or stress measurement with good accuracy. 
【Fund】: TheprojectsupportedbytheNationalNaturalScienceFoundationofChina (10 0 72 0 2 6) ;;JiangsuScienceFoundation (BK2 0 0 12 13 )andAeronauticsSci enceFoundation(0 1I5 2 0 5 6)
【CateGory Index】: TP212
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