Experimental demonstration of the active area model in extensional ionic polymer transducers

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dc.contributor.author Akle, Barbar J.
dc.contributor.author Leo, Donald J.
dc.date.accessioned 2016-10-17T10:16:08Z
dc.date.available 2016-10-17T10:16:08Z
dc.date.copyright 2012 en_US
dc.date.issued 2016-10-17
dc.identifier.issn 0964-1726 en_US
dc.identifier.uri http://hdl.handle.net/10725/4623
dc.description.abstract Ionic polymer transducers (IPTs) also known as ionic polymer metal composites (IPMCs) are soft smart materials that are well characterized in bending actuation. A salient feature of an IPT is its ability to generate large strains of the order of 5% at moderate voltages ( < 2 V). The authors previously reported extensional actuation in IPTs, which in theory is supposed to generate larger energy densities as compared to bending actuation. The experiments in the previous study were limited to the measurement of an AC force response in IPTs. This paper presents DC and AC experimental measurements of the free displacement in extensional IPT actuators. The active area model presented in the previous study is employed in this study and is proven to accurately predict the displacement behavior. Moreover, the magnitudes of the α and β coupling coefficients in the active area model required to fit the displacement data are within the ranges reported in the previous study. Furthermore, the active area model is based on the assumption that the high surface area electrodes are the only active components, while the inner ionomer membrane acts as an ion transport medium and does not perform any electromechanical coupling. This assumption is proved in this study by replacing the central Nafion membrane with a passive AlO2 porous film filled with the EMI-TF ionic liquid. The actuator with the AlO2 membrane demonstrates electromechanical extensional response faster than that in the Nafion based transducer. The large stiffness of the AlO2 based transducer is expected to provide larger forces and results in an actuator with greater energy density. en_US
dc.language.iso en en_US
dc.title Experimental demonstration of the active area model in extensional ionic polymer transducers en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200700940 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal Smart Materials and Structures en_US
dc.journal.volume 21 en_US
dc.journal.issue 10 en_US
dc.article.pages 1-8 en_US
dc.identifier.doi http://dx.doi.org/10.1088/0964-1726/21/10/105034 en_US
dc.identifier.ctation Akle, B. J., & Leo, D. J. (2012). Experimental demonstration of the active area model in extensional ionic polymer transducers. Smart Materials and Structures, 21(10), 105034. en_US
dc.author.email barbar.akle@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url http://iopscience.iop.org/article/10.1088/0964-1726/21/10/105034/meta en_US

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