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Proceedings Paper

Recent advances in active fiber composites for structural control
Author(s): Aaron A. Bent; Alessandro E. Pizzochero
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Paper Abstract

Active Fiber Composites (AFCs) provide a novel method for large scale actuation and sensing in active structures. The composite comprises unidirectionally aligned piezoelectric fibers, a resin matrix system, and interdigital electrode. AFCs have demonstrated distinct advantages over current monolithic piezoceramic actuators, including: higher planar actuation strain, tailorable orthotropic actuation, robustness to damage, conformability to curved surfaces, and potential for large area distributed actuation/sensing system. This manuscript focuses on recent developments in three key areas. The first area describes the completion of a standard AFC baseline material. The baseline AFC consists of 5.5mil diameter PZT-5A fibers laminated with an epoxy film adhesive and silver screen-printed electrodes. A scalable fabrication process based on lamination industry equipment has been implemented. Baseline AFC performance has been characterized, including free strains and blocked force. The send area describes continued work in developing optimized geometry/materials for future AFCs. AFC performance and efficiency can be affected significantly by changes in electrode pitch and fiber diameter and/or cross- sectional geometry. Various improved design have been identified. Third is review of application demonstration that exploit the benefits of AFCs to solve structural control problems.

Paper Details

Date Published: 12 June 2000
PDF: 11 pages
Proc. SPIE 3991, Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies, (12 June 2000); doi: 10.1117/12.388184
Show Author Affiliations
Aaron A. Bent, Continuum Control Corp. (United States)
Alessandro E. Pizzochero, Continuum Control Corp. (United States)


Published in SPIE Proceedings Vol. 3991:
Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies
Jack H. Jacobs, Editor(s)

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