Thermo-mechanical characterization of polypyrrole compliance using system identification
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Pillai-2009-Thermo-mechanical ch.pdf
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Author(s)
Pillai, Priam Vasudevan
Hunter, Ian
Date Issued
November 2009
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009. EMBC 2009.
Publisher
Institute of Electrical and Electronics Engineers
Citation
Pillai, Priam V., and Ian W. Hunter. “Thermo-mechanical characterization of polypyrrole compliance using stochastic system identification.” Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE. 2009. 6834-6837. © 2009 Institute of Electrical and Electronics Engineers.
Version
Final published version
Abstract
Conducting polymers such as polypyrrole are studied as novel biologically inspired actuators. Their capacity to generate stresses of up to 5 MPa, strains of up to 10% at low voltages (2 V) make them ideal candidates to be used as artificial muscle materials. It has been shown that the modulus of polypyrrole can change when the material is electrochemically excited. In this paper we develop a technique that uses a stochastic stress input that can be used to measure the compliance frequency response (between 10-2 Hz and 100 Hz) of polypyrrole in-situ. We validate the compliance calculated from the stochastic stress input by comparing it with the compliance calculated from a single sinusoidal stress input. We also measure the compliance as a function of temperature using both techniques and show that the stochastic compliance follows the same trends as the compliance calculated from single sinusoidal stress input.
MIT Department
Massachusetts Institute of Technology. BioInstrumentation Laboratory
Massachusetts Institute of Technology. Department of Mechanical Engineering
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1109/IEMBS.2009.5334477
