Localized Fiber Optic Strain Sensors Embedded In Composite Materials

Tomas Valis; Edward Tapanes; R. M. Measures

doi:10.1117/12.963125

5 February 1990 Localized Fiber Optic Strain Sensors Embedded In Composite Materials

Tomas Valis, Edward Tapanes, R. M. Measures

Proceedings Volume 1170, Fiber Optic Smart Structures and Skins II; (1990) https://doi.org/10.1117/12.963125
Event: OE/FIBERS '89, 1989, Boston, United States

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.

Citation Download Citation

Tomas Valis, Edward Tapanes, and R. M. Measures "Localized Fiber Optic Strain Sensors Embedded In Composite Materials", Proc. SPIE 1170, Fiber Optic Smart Structures and Skins II, (5 February 1990); https://doi.org/10.1117/12.963125

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