Affiliation:
1. Faculty of Architectural, Civil Engineering and Environment, Ningbo University, Ningbo, P.R. China
Abstract
A laminated orthotropic rectangular plate surface-bonded or embedded with a piezoelectric actuator/sensor is investigated based on the state-space approach. A linear spring-like model is utilized to simulate the interfacial imperfections. Besides, to establish the global transfer relations between the elastic variables of the elastic layers and the piezoelectric films, a matrix reduction technique is employed. Then, an analytical expression of electro-mechanical impedance, which contains the information of the interfacial bonding, is derived based on the three-dimensional theory of elasticity (or piezoelasticity). Numerical results show that the signals extracted from the present electro-mechanical impedance model can detect the interfacial conditions of laminates, and hence, the present analysis provides an efficient and convenient approach to monitor the interfacial defects in the laminated structures.
Subject
Mechanical Engineering,General Materials Science
Cited by
1 articles.
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