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Proceedings Paper

Effect of bending stiffness of the electroactive polymer element on the performance of a hybrid actuator system (HYBAS)
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Paper Abstract

An electroactive polymer (EAP)-ceramic hybrid actuation system (HYBAS) was developed recently at NASA Langley Research Center. This paper focuses on the effect of the bending stiffness of the EAP component on the performance of a HYBAS, in which the actuation of the EAP element can match the theoretical prediction at various length/thickness ratios for a constant elastic modulus of the EAP component. The effects on the bending stiffness of the elastic modulus and length/thickness ratio of the EAP component were studied. A critical bending stiffness to keep the actuation of the EAP element suitable for a rigid beam theory-based modeling was found for electron irradiated P(VDF-TrFE) copolymer. For example, the agreement of experimental data and theoretical modeling for a HYBAS with the length/thickness ratio of EAP element at 375 times is demonstrated. However, the beam based theoretical modeling becomes invalid (i.e., the profile of the HYBAS movement does not follow the prediction of theoretical modeling) when the bending stiffness is lower than a critical value.

Paper Details

Date Published: 22 March 2006
PDF: 9 pages
Proc. SPIE 6168, Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD), 61682H (22 March 2006); doi: 10.1117/12.661186
Show Author Affiliations
Tian-Bing Xu, National Institute of Aerospace (United States)
Ji Su, NASA Langley Research Ctr. (United States)
Xiaoning Jiang, TRS Technologies, Inc. (United States)
Paul W. Rehrig, TRS Technologies, Inc. (United States)
Shujun Zhang, The Pennsylvania State Univ. (United States)
Thomas R. Shrout, The Pennsylvania State Univ. (United States)
Qiming Zhang, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 6168:
Smart Structures and Materials 2006: Electroactive Polymer Actuators and Devices (EAPAD)
Yoseph Bar-Cohen, Editor(s)

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