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Proceedings Paper

Embedded intrinsic Fabry-Perot optical fiber sensors in cement concrete structure
Author(s): Ki Soo Kim; Jae-Wook Yoo; Seung Kwan Kim; Byoung Yoon Kim
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Paper Abstract

Intrinsic Fabry-Perot optical fiber sensors were embedded to the tensile side of the 20 cm by 20 cm by 150 cm cement concrete structures. The sensors were attached to the reinforcing steels and then, the cement concretes were applied. It took 30 days for curing the specimens. After that, the specimens were tested with 4-point bending method by a universal testing machine. Strains were measured and recorded by the strain gauges embedded near optical fiber sensors. Output data of fiber sensor showed good linearity to the strain data from the strain gauges up to 2000 microstrain. The optical fiber sensors showed good response after yielding of the structure while embedded metal film strain gauges did not show any response. We also investigated the behavior of the optical fiber sensor when the specimens were broken down. In conclusion, the optical fiber sensors can be used as elements of health monitoring systems for cement concrete infra-structures.

Paper Details

Date Published: 30 May 1996
PDF: 14 pages
Proc. SPIE 2718, Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation, (30 May 1996); doi: 10.1117/12.240863
Show Author Affiliations
Ki Soo Kim, Ssangyong Research Ctr./Korea Advanced Institute of Science and Technology (South Korea)
Jae-Wook Yoo, Ssangyong Research Ctr./Korea Advanced Institute of Science and Technology (South Korea)
Seung Kwan Kim, Korea Advanced Institute of Science and Technology (South Korea)
Byoung Yoon Kim, Korea Advanced Institute of Science and Technology (South Korea)


Published in SPIE Proceedings Vol. 2718:
Smart Structures and Materials 1996: Smart Sensing, Processing, and Instrumentation
Kent A. Murphy; Dryver R. Huston, Editor(s)

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