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Related Concept Videos

Corrosion of Reinforcement01:27

Corrosion of Reinforcement

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The corrosion of steel reinforcement within concrete is a process influenced by the material's inherent properties and external factors. The high pH level of around 13, provided by calcium hydroxide present in concrete, initially protects the steel reinforcement by promoting the formation of a passive iron oxide layer on its surface.
However, over time and under certain conditions like carbonation, chloride ingress, and cracking this protective state can be compromised. Steel has areas with...
443

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Related Experiment Video

Updated: Dec 29, 2025

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
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External Corrosion Detection of Oil Pipelines Using Fiber Optics.

Nader Vahdati1, Xueting Wang1, Oleg Shiryayev2

  • 1Department of Mechanical Engineering, Khalifa University of Science and Technology, Sas Al Nakhl Campus, Abu Dhabi, UAE.

Sensors (Basel, Switzerland)
|January 30, 2020
PubMed
Summary

A novel external corrosion detection sensor for oil and gas pipelines uses sacrificial metal plates and Fiber Bragg Grating (FBG) optical fibers. Corrosion failure of the metal plate relieves tension on the FBG sensor, signaling pipeline integrity issues.

Keywords:
Fiber Bragg Grating (FBG)corrosion sensoroil and gas pipelinesoptical fibers

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Area of Science:

  • Materials Science
  • Sensor Technology
  • Corrosion Engineering

Background:

  • Oil flowlines are susceptible to external corrosion and difficult to inspect.
  • Early detection of pipeline corrosion is critical for safety and operational efficiency.
  • Existing inspection methods for flowlines can be invasive or limited in scope.

Purpose of the Study:

  • To develop and validate a novel external corrosion detection sensor for oil and gas pipelines.
  • To provide a cost-effective and easily deployable solution for monitoring pipeline integrity.
  • To enable early detection of corrosion before critical failure occurs.

Main Methods:

  • Design of a sensor comprising a semicircular plastic strip, a sacrificial metal plate, and Fiber Bragg Grating (FBG) optical fibers.
  • Attachment of FBG sensors to pipelines using straps or clamps, with the corrosion sensor glued to the FBG.
  • Utilizing the principle of strain relief on FBG sensors as sacrificial metal corrodes to failure.

Main Results:

  • The sensor design effectively translates metal corrosion into detectable strain changes in FBG sensors.
  • Experimental results verified the theoretical principles of the corrosion detection mechanism.
  • The system demonstrated the capability to signal severe corrosion at specific pipeline locations.

Conclusions:

  • The proposed external corrosion detection sensor offers a promising method for monitoring oil and gas pipeline integrity.
  • The sensor system provides a direct and measurable indication of corrosion progression.
  • This technology can enhance the safety and reliability of oil and gas infrastructure.