Fiber sensors for monitoring structural strain and cracks

Karl F. Voss; Keith H. Wanser

doi:10.1117/12.184812

13 September 1994 Fiber sensors for monitoring structural strain and cracks

Karl F. Voss, Keith H. Wanser

Proceedings Volume 2361, Second European Conference on Smart Structures and Materials; (1994) https://doi.org/10.1117/12.184812
Event: Smart Structures and Materials: Second European Conference, 1994, Glasgow, United Kingdom

Abstract

Recent structural failure and damage associated with earthquakes and pipeline failures have underscored the need for structural integrity monitoring systems using distributed fiber optic sensors. Such sensors must be low-cost, easily installed on new and existing structures, allow rapid assessment of structural integrity, and be capable of surviving and sensing large displacements associated with cracks and deflections in structural members. Experimental results for multimode fiber crack detection sensors based on the orientation angle approach are reported for both longitudinal and transverse crack displacements. In addition, we report results on a novel all-fiber sensor capable of sensing submillimeter cracks while surviving and sensing larger than 100% strains and cm level displacements.

Citation Download Citation

Karl F. Voss and Keith H. Wanser "Fiber sensors for monitoring structural strain and cracks", Proc. SPIE 2361, Second European Conference on Smart Structures and Materials, (13 September 1994); https://doi.org/10.1117/12.184812

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