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Proceedings Paper

Demonstration of an actively damped composite part
Author(s): James R. Dunphy; James J. Ryan; E. Reicher; J. Scragg; C. Maidment
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Paper Abstract

A twin-core optical fiber sensor was cured into a graphite reinforced PEEK composite tube (6 feetlong and 2 inches in diameter). Aftercuring, the sensorwas interfaced to an electro-optics package to measure static and dynamic strain. During dynamic testing, signals from the embedded sensor were introduced into a control system to drive a piezoelectric, mass-reaction actuator. The damping coefficient of the first fundamental mode ofvibration was improved by more than a factor of 7 for large transient disturbances. Even better performance was observed for low level disturbances. Predictions from an analytic system modelcorrespond well with thelaboratory system and provide insight into optimization of control system parameters. This paper presents the details of the demonstration effort.

Paper Details

Date Published: 1 December 1990
PDF: 3 pages
Proc. SPIE 1370, Fiber Optic Smart Structures and Skins III, (1 December 1990); doi: 10.1117/12.24854
Show Author Affiliations
James R. Dunphy, United Technologies Research Ctr. (United States)
James J. Ryan, United Technologies Research Ctr. (United States)
E. Reicher, United Technologies Research Ctr. (United States)
J. Scragg, Westland Aerostructures Ltd. (United States)
C. Maidment, Westland Aerostructures Ltd. (United States)

Published in SPIE Proceedings Vol. 1370:
Fiber Optic Smart Structures and Skins III
Richard O. Claus; Eric Udd, Editor(s)

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