A Electromechanical Model of adhesively bonded Piezoelectric Actuator used for Lamb Waves Excitation

The objective of this research is to establish a electromechanical model of adhesively bonded piezoelectric actuator for Lamb waves excitation in Structural Health Monitoring. The material of a typical circle piezoelectric actuator is usually transversely isotropic piezoelectric. The electromechanical transfer characteristics of adhesively bonded piezoelectric actuators are performed as the plane problem of transversely isotropic piezoelectric material. A general solution is provided in terms of complex potentials. The mechanical characteristics of bond layer between piezoelectric actuator and structure are also analysed. Finally a group of solutions of Lamb waves in structure excited by the electromechanical piezoelectric actuator is obtained. Based on the