Thermal plastic metal coatings on optical fiber sensors

James S. Sirkis; Abhijit Dasgupta

doi:10.1117/12.50167

1 December 1991 Thermal plastic metal coatings on optical fiber sensors

James S. Sirkis, Abhijit Dasgupta

Proceedings Volume 1588, Fiber Optic Smart Structures and Skins IV; (1991) https://doi.org/10.1117/12.50167
Event: OE Fiber, 1991, Boston, MA, United States

Abstract

Optical fiber sensors coated with linear work hardening elastic-plastic materials are analytically explored to determine the effects which the coating properties have on the sensor performance. The optical fiber system is subjected to both an axial load and an arbitrary thermal gradient. An important consequence of the non-linear analysis is the discovery that this coated fiber system can be exploited to serve as an alternative to the conventional fiber breakage sensor for sensing impact damage. The non-linear analysis reveals a mechanism for designing coatings which provide a 'memory' to the fiber-optic sensor by undergoing permanent deformations in response to large thermal or mechanical strain excursions. Such sensors can be utilized to maintain a permanent record of the load/damage history of a loaded structure.

Citation Download Citation

James S. Sirkis and Abhijit Dasgupta "Thermal plastic metal coatings on optical fiber sensors", Proc. SPIE 1588, Fiber Optic Smart Structures and Skins IV, (1 December 1991); https://doi.org/10.1117/12.50167

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