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Effect of piezoelectric interphase on the effective magneto-electro-elastic properties of three-phase smart composites: A micromechanical study

ABSTRACT A unit cell-based micromechanical model is presented to investigate the effect of PZT-7A piezoelectric interphase on the effective magneto-electro-elastic properties of CoFe2O4 piezomagnetic matrix composites reinforced with piezoelectric fibers. The carbon fiber is coated with the PZT-7A piezoelectric material. The model is used to determine effective stresses, electric and magnetic field properties of the smart composite. By applying loads over the RVE of unit cell model in electric and magnetic fields, the in-plane strains, corresponding piezoelectric constants and corresponding piezomagnetic constants are obtained. The influences of interphase thickness on effective magneto-electro-elastic properties are investigated at different piezoelectric fiber volume fractions.