Abstract
The actuation and sensing behavior of a typical polycrystallineFe81.6Ga18.4 alloy sample grown using free stand zone melt (FSZM) manufacturing processes wascharacterized and its cross-section texture was determined at three transverse stationsusing electron back-scattering diffraction (EBSD). An attempt was made to model theactuation and sensing behavior of the polycrystalline magnetostrictive sample from itscross-section texture by treating the polycrystal as composed of multiple grains of singlecrystals, each with a different orientation to the loading axis. The polycrystallinemagnetomechanical behavior was modeled as the sum of the volume fraction weightedsingle-crystal behavior along the [100], [110], [210], [310], [111], [211] and [311] directions,which are modeled using the energy-based approach discussed in Armstrong (1997 J. Appl.Phys. 81 2321) and Atulasimha (2006 PhD Thesis Aerospace Engineering, University ofMaryland).
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