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Technical Briefs

Effective Properties of Carbon Nanotube and Piezoelectric Fiber Reinforced Hybrid Smart Composites

[+] Author and Article Information
M. C. Ray, R. C. Batra

Department of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, MC 0219, Blacksburg, VA 24061

J. Appl. Mech 76(3), 034503 (Mar 13, 2009) (4 pages) doi:10.1115/1.3063633 History: Received January 29, 2008; Revised July 24, 2008; Published March 13, 2009

We propose a new hybrid piezoelectric composite comprised of armchair single-walled carbon nanotubes and piezoelectric fibers as reinforcements embedded in a conventional polymer matrix. Effective piezoelectric and elastic properties of this composite have been determined by a micromechanical analysis. Values of the effective piezoelectric coefficient e31 of this composite that accounts for the in-plane actuation and of effective elastic properties are found to be significantly higher than those of the existing 1–3 piezoelectric composites without reinforced with carbon nanotubes.

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Copyright © 2009 by American Society of Mechanical Engineers
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Figures

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Figure 1

Schematic sketch of a NRHPC comprised of a polymer matrix reinforced with CNT and PZT fibers

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Figure 2

Effective piezoelectric coefficient e31 of the NRHPC

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Figure 3

Effective elastic coefficient C33 of the NRHPC

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Figure 4

For vn=0.75vp, variation of the effective piezoelectric coefficient e31 of the NRHPC with the diameter of CNTs

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Figure 5

For vn=0.75vp, variation of the effective elastic constant C33 of the NRHPC with the diameter of CNTs

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