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Proceedings Paper

Embedded Bragg grating fiber optic sensor for composite flexbeams
Author(s): Daniel E. Bullock; James R. Dunphy; Gerard H. Hufstetler
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Paper Abstract

An embedded fiber-optic (F-O) sensor has been developed for translaminar monitoring of the structural integrity of composites, with a view to application in composite helicopter flexbeams for bearingless main rotor hubs. This through-thickness strain sensor is much more sensitive than conventional in-plane embedded F-O sensors to ply delamination, on the basis of a novel insertion technique and innovative Bragg grating sensor. Experimental trials have demonstrated the detection by this means of potential failures in advance of the edge-delamination or crack-propagation effect.

Paper Details

Date Published: 26 March 1993
PDF: 9 pages
Proc. SPIE 1798, Fiber Optic Smart Structures and Skins V, (26 March 1993); doi: 10.1117/12.141321
Show Author Affiliations
Daniel E. Bullock, Foster-Miller, Inc. (United States)
James R. Dunphy, United Technologies Research Ctr. (United States)
Gerard H. Hufstetler, U.S. Army Aviation Applied Systems Command (United States)

Published in SPIE Proceedings Vol. 1798:
Fiber Optic Smart Structures and Skins V
Richard O. Claus; Robert S. Rogowski, Editor(s)

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