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Proceedings Paper

Localized Fiber Optic Strain Sensors Embedded In Composite Materials
Author(s): Tomas Valis; Edward Tapanes; R. M. Measures
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Paper Abstract

A phase sensitive fiber optic strain gauge that is both spatially local and unidirectional is described. The design consists of a path balanced lead-in/out Michelson interferometer using a single-mode directional coupler. It is tested as a surface adhered device in both uniaxial and rosette configurations. The device is integrated between plies of graphite/PEEK thermoplastic to provide lamina strain measurements. Performance parameters gauge factor, transverse sensitivity, and failure strainmare evaluated. The utility of such a strain gauge is discussed in the general context of smart structures and skins.

Paper Details

Date Published: 5 February 1990
PDF: 10 pages
Proc. SPIE 1170, Fiber Optic Smart Structures and Skins II, (5 February 1990); doi: 10.1117/12.963125
Show Author Affiliations
Tomas Valis, University of Toronto (Canada)
Edward Tapanes, University of Toronto (Canada)
R. M. Measures, University of Toronto (Canada)

Published in SPIE Proceedings Vol. 1170:
Fiber Optic Smart Structures and Skins II
Eric Udd, Editor(s)

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