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Proceedings Paper

Optical fiber corrosion sensors for aging aircraft
Author(s): Jonathan A. Greene; Mark E. Jones; Timothy A. Bailey; Ignacio M. Perez
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Paper Abstract

Optical fiber corrosion sensors are being developed to address the high service costs associated with current structural maintenance procedures for civilian and military assets. A distributed optical fiber sensor system will help reduce the costs associated with corrosion damage and extend the lifetime of existing assets. Annual national losses in time, labor, materials and systems has been estimated in the billions of dollars. Additional costs arise from system downtime that results from disassembly procedures necessary to locate corrosion damage in remote locations. Furthermore, the potential to damage other system parts during maintenance is increased when disassembly and reassembly occurs. The development of on-line optical fiber sensors capable of detecting corrosion would eliminate a significant portion of the maintenance costs. We present recent test results using optical fiber long-period grating (LPG) corrosion sensors. With the appropriate coating, the sensors can be designed to detect water or metal ions in otherwise inaccessible regions of the aircraft. The LPG sensors can be designed with low temperature cross-sensitivity, multiplexed along a single fiber, and can be demodulated using a simple, low-cost spectrum analyzer.

Paper Details

Date Published: 15 March 1998
PDF: 6 pages
Proc. SPIE 3399, Process Control and Sensors for Manufacturing, (15 March 1998); doi: 10.1117/12.302561
Show Author Affiliations
Jonathan A. Greene, F&S, Inc. (United States)
Mark E. Jones, F&S, Inc. (United States)
Timothy A. Bailey, F&S, Inc. (United States)
Ignacio M. Perez, Naval Air Warfare Ctr. (United States)


Published in SPIE Proceedings Vol. 3399:
Process Control and Sensors for Manufacturing
Richard H. Bossi; David M. Pepper, Editor(s)

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