Design and fabrication of functionally graded PZT/Pt piezoelectric bimorph actuator

The fracture behaviour of functionally graded piezoelectric materials containing collinear dielectric cracks

“…These new kinds of non-homogeneous piezoelectric materials are called functionally graded piezoelectric materials (FGPMs; Wu et al 1996;Hudnut et al 2000;Zhu et al 2000), which are expected to possess the advantages of both FGMs and piezoelectric materials and to improve the reliability and lifetime of piezoelectric structures and devices. For example, Takagi et al (2002) have shown that the piezoelectric structures made of FGPMs with optimized composition profile can perform better than those homogeneous piezoelectric ones. However, the commonly used piezoelectric materials, with stronger electromechanical coupling effects, are generally brittle and have the tendency to develop multiple cracks during manufacturing and service processes.…”

3D free vibration analysis of a functionally graded piezoelectric hollow cylinder filled with compressible fluid

“…Moreover, the performance of conventional homogeneous piezoelectric structures can be improved by using the concept of FGM. For example, Takagi et al (2002) applied the modified classical lamination theory and the finite element method to optimize compositional profile of functionally graded PZT/Pt piezoelectric bimorph actuator that will give a larger deflection and smaller stress. To design advanced smart structures, it is necessary to thoroughly understand the static and dynamic behaviors of FGPM structures in complex environments.…”

Modeling for piezoelectric-shape memory alloy composites

“…In this study, the model composites are assumed to be composed of SMA (CuMnAl) fillers and piezo (PZT) matrix composites, whose properties are given in Table 1 [16]. The data marked by * are not available from the literature and assumed.…”