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2 April 2015 Characterization and modeling time-dependent behavior in PZT fibers and active fiber composites
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Active fiber composites (AFC) are comprised of lead zirconate titanate (PZT) fibers embedded in a polymer. This paper presents an experimental characterization of the PZT fibers and a constitutive model focused on their time-dependent, nonlinear response. The experiments herein focus on characterizing time dependence of various properties by conducting creep, relaxation, mechanical and electric field-cyclic loading at different frequencies. The constitutive model is a time-dependent polarization model that predicts nonlinear polarization and electro-mechanical strain responses of the fibers. The model of PZT fibers is used in the FEM simulation of AFCs and results of the model are compared to experiments for validation.
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Mohamed Aziz Dridi, Hassene Ben Atitallah, Zoubeida Ounaies, and Anastasia Muliana "Characterization and modeling time-dependent behavior in PZT fibers and active fiber composites", Proc. SPIE 9432, Behavior and Mechanics of Multifunctional Materials and Composites 2015, 94320B (2 April 2015);

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