Homogenization techniques and application to piezoelectric composite materials

1999 ◽  
Vol 10 (5) ◽  
pp. 391-403 ◽  
Author(s):  
Amen Agbossou ◽  
Hung Nguyen Viet ◽  
Joseph Pastor
Keyword(s):  
Composite Materials ◽  
Piezoelectric Composite

An analysis of piezoelectric composite materials containing ellipsoidal inhomogeneities

1993 ◽  
Vol 443 (1918) ◽  
pp. 265-287 ◽  
Keyword(s):  
Composite Materials ◽  
Effective Properties ◽  
Mean Field ◽  
Piezoelectric Medium ◽  
Piezoelectric Composite ◽  
High Concentration ◽  
Reinforced Composite ◽  
The Matrix ◽  
Eshelby’S Tensor ◽  
Piezoelectric Solids

A set of four tensors corresponding to Eshelby’s tensor in elasticity are obtained for an ellipsoidal inclusion embedded in an infinite piezoelectric medium. These tensors, which describe the elastic, piezoelectric, and dielectric constraint of the matrix, are obtained from W. F. Deeg’s solution to inclusion and inhomogeneity problems in piezoelectric solids. These tensors are then used as the backbone in the development of a micromechanics theory to predict the effective elastic, dielectric, and piezoelectric moduli of particle and fibre reinforced composite materials. The effects of interaction among inhomogeneities at finite concentrations are approximated through the Mori-Tanaka mean field approach. This approach, although widely utilized in the study of uncoupled elastic and dielectric behaviour, has not before been applied to the study of coupled behaviour. To help ensure confidence in the theory, the analytical predictions are proven to be self-consistent, diagonally symmetric, and to exhibit the correct behaviour in the low and high concentration limits. Finally, numerical results are presented to illustrate the effects of the concentration, shape, and material properties of the reinforcement on the effective properties of piezoelectric composites and analytical predictions are shown to result in good agreement with existing experimental data.

scholarly journals Magnetodielectric properties of ferrite-piezoelectric composite materials.

2021 ◽  
Vol 2021 (10) ◽  
Author(s):  
Yu.A. Lupitskaya ◽  
◽  
E.M. Filonenko ◽  
P.E. Romazev ◽  
◽  
...  
Keyword(s):  
Composite Materials ◽  
Lead Zirconate Titanate ◽  
Ceramic Composite ◽  
Lead Zirconate ◽  
Piezoelectric Composite ◽  
Entire Concentration Range ◽  
Physicochemical Methods ◽  
System 1 ◽  
Different Content ◽  
Frequency Dependences

Ceramic composite materials based on compounds of lead zirconate-titanate and cobalt ferrite with different content of the initial components mass fraction have been synthesized. Using a complex of physicochemical methods, the microstructure and magnetodielectric properties of the synthesized ceramics have been studied. The resulting frequency dependences of the magneto-dielectric coefficient for the composite system (1-x)PZT + xCF(0.0 ≤ x ≤ 0.5) in an external magnetic field have a resonance form in the entire concentration range investigated. The largest changes in the value of the complex permittivity are observed for the sample with the composition of 0.6PZT + 0.4CF.

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