Effective properties of a piezocomposite containing shape memory alloy and inert inclusions

摘要: We use the energy equivalence principle and Mori-Tanaka method of considering interaction among inclusions to derive effective thermo-electro-mechanical properties a 4-phase composite consisting an elastic matrix shape memory alloy, piezoelectric inert (nonpiezoelectric) inclusions. It is shown that shapes volume fraction (e.g. air) significantly influence composite, addition soft decreases axial stress required initiate phase transformation in SMA inclusions, increases electromechanical coupling constant. The makes very good sensor measure low values applied since strain induced by 80 MPa 2%, sensitivity improved spherical With suitable choice material, its compliance can be adjusted made conform host structure.