Microstructure-property interactions in piezoelectric composites
- Univ. of Tennessee, Knoxville, TN (United States)
Piezoelectric composites have recently attracted extensive attention in view of their wide applications to smart sensors and actuators. A micromechanics model is developed to predict the coupled electro-thermo-elastic properties of a broad class of two-phase piezoelectric composites. The composites are modeled as infinite piezoelectric solids containing periodically distributed piezoelectric inhomogeneities with arbitrary shape. The elastic, thermal, and electric fields within such periodic composites can be expressed in Fourier series. The interactions between inhomogeneities are thus accounted for in an explicit and direct manner. By using Eshelby`s equivalent inclusion method, analytic estimates for the overall elastic, piezoelectric, dielectric and thermal properties of a broad class of piezoelectric composites are obtained. Important microstructural variables, such as the properties and shape of inhomogeneity, are studied. The results agree very well with experimental data and are also compared with those obtained by existing micromechanics models, such as self-consistent method and Mori-Tanaka method.
- OSTI ID:
- 175102
- Report Number(s):
- CONF-950686--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Micromechanics determination of the effective properties of piezoelectric composites containing spatially oriented short fibers
Eshelby-Mori-Tanaka Approach