Experimental characterization of PZT fibers using IDE electrodes

Nicholas Wyckoff; Hassene Ben Atitallah; Zoubeida Ounaies

doi:10.1117/12.2222143

18 April 2016 Experimental characterization of PZT fibers using IDE electrodes

Nicholas Wyckoff, Hassene Ben Atitallah, Zoubeida Ounaies

Proceedings Volume 9800, Behavior and Mechanics of Multifunctional Materials and Composites 2016; 98000N (2016) https://doi.org/10.1117/12.2222143
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Lead zirconate titanate (PZT) fibers are mainly used in active fiber composites (AFC) where they are embedded in a polymer matrix. Interdigitated electrodes (IDE) along the direction of the fibers are used to achieve planar actuation, hereby exploiting the d₃₃ coefficient of PZT. When embedded in the AFC, the PZT fibers are subjected to mechanical loading as well as non-uniform electric field as a result of the IDEs. Therefore, it is important to characterize the electrical and electromechanical behavior of these fibers ex-situ using the IDE electrodes to assess the impact of nonuniform electric field on the properties of the fibers. For that reason, this work aims at quantifying the impact of IDE electrodes on the electrical and electromechanical behavior of PZT fibers, which is necessary for their successful implementation in devices like AFC. The tested fibers were purchased from Advanced Cerametrics and they have an average diameter of 250 micrometers. The IDE electrodes were screen printed on an acrylic substrate. The PZT fibers were subjected to frequency sweeps at low voltages to determine permittivity for parallel and interdigitated electrodes. The piezoelectric e₃₃ constant is determined from electromechanical testing of PZT fibers in parallel electrodes to compare the electromechanical behavior for PZT in bulk and fiber form. The dielectric constant and e₃₃ were found to be lower for the IDE and parallel electrodes compared to bulk but comparable to results published in literature.

Citation Download Citation

Nicholas Wyckoff, Hassene Ben Atitallah, and Zoubeida Ounaies "Experimental characterization of PZT fibers using IDE electrodes", Proc. SPIE 9800, Behavior and Mechanics of Multifunctional Materials and Composites 2016, 98000N (18 April 2016); https://doi.org/10.1117/12.2222143

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KEYWORDS

Electrodes

Ferroelectric materials

Dielectrics

Optical fibers

Composites

Epoxies

Copper

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