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Proceedings Paper

Feasibility study of microfabrication by coextrusion (MFCX) hollow fibers for active composites
Author(s): Bryan J. Cannon; Diann E. Brei
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Paper Abstract

Active long-fiber composites based on a hollow fiber topology have advantages over solid fiber composites in that they require lower voltages for activation and are not limited to electrically non-conductive matrix materials. One critical issue for hollow fiber composites is the fiber aspect ratio. To investigate this at the individual fiber level, analytical and finite element models which include electric field variations, were developed to determine the 'effective d31' of a hollow fiber. By using the effective fiber properties in this way, it was possible to derive a single-row lamina strain/electric field model form classical composite theory. The models were validated with a series of deflection/voltage experiments conducted utilizing hollow fibers fabricated y microfabrication by coextrusion (MFCX) techniques. To determine the feasibility of MFCX hollow fiber composites, the models and experimental results were employed to study the effect of the fiber aspect ratio on a variety of fiber/composite design issues: fiber/lamina performance, fiber strength, matrix material, and electric field effects.

Paper Details

Date Published: 14 June 2000
PDF: 14 pages
Proc. SPIE 3992, Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics, (14 June 2000); doi: 10.1117/12.388238
Show Author Affiliations
Bryan J. Cannon, Univ. of Michigan (United States)
Diann E. Brei, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 3992:
Smart Structures and Materials 2000: Active Materials: Behavior and Mechanics
Christopher S. Lynch, Editor(s)

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