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Sensors 2018, 18(3), 815; https://doi.org/10.3390/s18030815

Detection of Internal Metal Loss in Steel Pipes and Storage Tanks via Magnetic-Based Fiber Optic Sensor

1
Department of Mechanical Engineering, Khalifa University of Science and Technology, P.O. Box 2533, Abu Dhabi, UAE
2
Chemistry Department, Khalifa University of Science and Technology, P.O. Box 2533, Abu Dhabi, UAE
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Received: 11 January 2018 / Revised: 5 March 2018 / Accepted: 6 March 2018 / Published: 8 March 2018
(This article belongs to the Special Issue Optical Fiber Sensors 2017)
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Abstract

A monitoring solution was developed for detection of material loss in metals such as carbon steel using the force generated by permanent magnets in addition to the optical strain sensing technology. The working principle of the sensing system is related to the change in thickness of a steel plate, which typically occurs due to corrosion. As thickness decreases, the magnetostatic force between the magnet and the steel structure also decreases. This, in turn, affects the strain measured using the optical fiber. The sensor prototype was designed and built after verifying its sensitivity using a numerical model. The prototype was tested on steel plates of different thicknesses to establish the relationship between the metal thickness and measured strain. The results of experiments and numerical models demonstrate a strong relationship between the metal thickness and the measured strain values. View Full-Text
Keywords: corrosion sensor; fiber optics; magnets; internal corrosion; pipelines; fiber bragg gratings corrosion sensor; fiber optics; magnets; internal corrosion; pipelines; fiber bragg gratings
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Almahmoud, S.; Shiryayev, O.; Vahdati, N.; Rostron, P. Detection of Internal Metal Loss in Steel Pipes and Storage Tanks via Magnetic-Based Fiber Optic Sensor. Sensors 2018, 18, 815.

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