Effective properties of three-phase electro-magneto-elastic multifunctional composite materials

Jaesang Lee; James G. Boyd IV; Dimitris C. Lagoudas

doi:10.1117/12.484701

13 August 2003 Effective properties of three-phase electro-magneto-elastic multifunctional composite materials

Jaesang Lee, James G. Boyd IV, Dimitris C. Lagoudas

Proceedings Volume 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics; (2003) https://doi.org/10.1117/12.484701
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

Coupling between the electric field, magnetic field, and strain of composite materials is achieved when electro-elastic (piezoelectric) and magneto-elastic (piezomagnetic) particles are joined by an elastic matrix. Although the matrix is neither piezoelectric nor piezomagnetic, the strain field in the matrix couples the E field of the piezoelectric phase to the B field of the piezomagnetic phase. This three-phase electro-magneto-elastic composite should have greater ductility and formability than a two-phase composite in which E and B are coupled by directly bonding two ceramic materials with no compliant matrix. A finite element analysis and homogenization of a representative volume element is used to determine the effective electric, magnetic, mechanical, and coupled-field properties of an elastic (epoxy) matrix reinforced with piezoelectric and piezomagnetic fibers. The effective magnetoelectric moduli of this three-phase composite are, however, less than the effective magnetoelectric coefficients of a two-phase piezoelectric/piezomagnetic composite, because the epoxy matrix is not stiff enough to transfer significant strains between the piezomagnetic and piezoelectric fibers.

Citation Download Citation

Jaesang Lee, James G. Boyd IV, and Dimitris C. Lagoudas "Effective properties of three-phase electro-magneto-elastic multifunctional composite materials", Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, (13 August 2003); https://doi.org/10.1117/12.484701

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