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Proceedings Paper

Monitoring of corrosion in steel structures using optical fiber sensors
Author(s): Kim D. Bennett; L. R. McLaughlin
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Paper Abstract

A prototype optical fiber sensor for monitoring corrosion on large steel structures has been designed and tested with favorable results. The sensor works by pulling a multimode fiber into a tight bend and securing it with a `corrosion fuse.' When the fuse corrodes, it eventually breaks and allows the fiber to straighten. The resulting difference in optical intensity emerging from the fiber is measurable using an OTDR or other optical detector. Initial experiments were carried out to determine the effect of bending fibers in a small radius and showed the feasibility of the device. Following, tests were performed on three in-line sensors in a simulated corrosive atmosphere and showed that this cheap and easily implemented monitoring scheme could be used to infer the presence of corrosion at different locations, and/or the degree of corrosion at a single location.

Paper Details

Date Published: 20 April 1995
PDF: 12 pages
Proc. SPIE 2446, Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways, (20 April 1995); doi: 10.1117/12.207744
Show Author Affiliations
Kim D. Bennett, Lafayette College (United States)
L. R. McLaughlin, Lafayette College (United States)


Published in SPIE Proceedings Vol. 2446:
Smart Structures and Materials 1995: Smart Systems for Bridges, Structures, and Highways
Larryl K. Matthews, Editor(s)

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