Detection of internal metal loss in steel pipes and storage tanks via magnetic-based fiber optic sensor

Safieh Almahmoud, Oleg Shiryayev, Nader Vahdati, Paul Rostron

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

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.

Original languageBritish English
Article number815
JournalSensors (Switzerland)
Volume18
Issue number3
DOIs
StatePublished - 8 Mar 2018

Keywords

  • Corrosion sensor
  • Fiber bragg gratings
  • fiber optics
  • Internal corrosion
  • Magnets
  • Pipelines

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