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Proceedings Paper

Optical fiber grating-based strain and corrosion sensors
Author(s): Mark E. Jones; Jonathan A. Greene; Vikram Bhatia; Tiffanie D'Alberto; Gregory A. Ten Eyck; Paul M. Schindler; Kent A. Murphy; Richard O. Claus
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Paper Abstract

Optical fiber gratings have recently emerged as attractive sensors for non-destructive evaluation of materials and structures. We present photoinduced Bragg and long-period gratings (LPGs) for monitoring corrosion in aging infrastructure. These two sensors are described based upon fabrication techniques, sensing mechanisms, sensitivities, and cross sensitivities. It will be demonstrated that while Bragg gratings need to be prestrained to detect corrosion of metals, the modulation of the evanescent field of the cladding modes in-long-period grating can be employed for corrosion monitoring. It will also be shown that sensitivities of LPG-based corrosion sensors to ambient temperature fluctuations can be reduced significantly.

Paper Details

Date Published: 15 November 1996
PDF: 7 pages
Proc. SPIE 2948, Nondestructive Evaluation for Process Control in Manufacturing, (15 November 1996); doi: 10.1117/12.259186
Show Author Affiliations
Mark E. Jones, Fiber and Sensor Technologies, Inc. (United States)
Jonathan A. Greene, Fiber and Sensor Technologies, Inc. (United States)
Vikram Bhatia, Virginia Polytechnic Institute and State Univ. (United States)
Tiffanie D'Alberto, Virginia Polytechnic Institute and State Univ. (United States)
Gregory A. Ten Eyck, Virginia Polytechnic Institute and State Univ. (United States)
Paul M. Schindler, Virginia Polytechnic Institute and State Univ. (United States)
Kent A. Murphy, Virginia Polytechnic Institute and State Univ. (United States)
Richard O. Claus, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 2948:
Nondestructive Evaluation for Process Control in Manufacturing
Richard H. Bossi; Tom Moran, Editor(s)

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