Fiber optic technique for simultaneous measurement of strain and       temperature variations in composite materials

W. Craig Michie; Brian Culshaw; Scott S. J. Roberts; Roger Davidson

doi:10.1117/12.50194

1 December 1991 Fiber optic technique for simultaneous measurement of strain and temperature variations in composite materials

W. Craig Michie, Brian Culshaw, Scott S. J. Roberts, Roger Davidson

Author Affiliations +

Proceedings Volume 1588, Fiber Optic Smart Structures and Skins IV; (1991) https://doi.org/10.1117/12.50194
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

A technique based upon the differential sensitivities of dual mode and polarimetric sensing schemes is shown to be capable of resolving simultaneously temperature and strain variations to within 20 micro-epsilon and 1 K over a strain and temperature excursion of 2 micro-epsilon and 45 K. The technique is evaluated experimentally over an 80 cm sensing length of unembedded optical fiber and in an 8 ply unidirectional carbon/epoxide laminate subject to temperature and strain cycling. A comparative analysis of the performance of the embedded and the unembedded fiber sensors is presented.

Citation Download Citation

W. Craig Michie, Brian Culshaw, Scott S. J. Roberts, and Roger Davidson "Fiber optic technique for simultaneous measurement of strain and temperature variations in composite materials", Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); https://doi.org/10.1117/12.50194

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