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Characterization of the electromechanical properties of EAP materials

Show simple item record Bar-Cohen, Yoseph Sherrit, Stewart Bhattachary, Kaushik Lih, Shyh-Shiuh 2006-05-23T17:32:35Z 2006-05-23T17:32:35Z 2001-03-05
dc.identifier.citation 8th Annual International Symposium on Smart Structures, Newport Beach, California, March 5-8, 2001. en
dc.identifier.clearanceno 01-0326
dc.description.abstract Electroactive polymers (EAP) are an emerging class of actuation materials. Their large electrically induced strains (longitudinal or bending), low density, mechanical flexibility, and ease of processing offer advantages over traditional electroactive materials. However, before the capability of these materials can be exploited, their electrical and mechanical behavior must be properly quantified. Two general types of EAP can be identified. The first type is ionic EAP, which requires relatively low voltages (<10V) to achieve large bending deflections. This class usually needs to be hydrated and electrochemical reactions may occur. The second type is Electronic-EAP and it involves electrostrictive and/or Maxwell stresses. This type of materials requires large electric fields (>100MV/m) to achieve longitudinal deformations at the range from 4 – 360%. Some of the difficulties in characterizing EAP include: nonlinear properties, large compliance (large mismatch with metal electrodes), nonhomogeneity resulting from processing, etc. To support the need for reliable data, the authors are developing characterization techniques to quantify the electroactive responses and material properties of EAP materials. The emphasis of the current study is on addressing electromechanical issues related to the ion-exchange type EAP also known as IPMC. The analysis, experiments and test results are discussed in this paper. en
dc.description.sponsorship NASA/JPL en
dc.format.extent 2509046 bytes
dc.format.mimetype application/pdf
dc.language.iso en_US en
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2001. en
dc.subject electroactive polymers (EAP) en
dc.subject characterization en
dc.subject testing en
dc.subject electromechanical properties en
dc.subject electroactive polymers en
dc.subject actuators en
dc.title Characterization of the electromechanical properties of EAP materials en
dc.type Preprint en

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