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Related Concept Videos

Electrical Conductivity01:13

Electrical Conductivity

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In perfect conductors, the electric field inside is always zero due to the abundance of free electrons, which nullify any field by flowing. As a result, any residual charge resides on the surface.
In a practical conductor, an applied electric field may be sustained, causing a flow of electrons, which produce a current. The differential form of the current, the current density, is related to the electric field.
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The degradation of metals due to natural electrochemical processes is known as corrosion. Rust formation on iron, tarnishing of silver, and the blue-green patina that develops on copper are examples of corrosion. Corrosion involves the oxidation of metals. Sometimes it is protective, such as the oxidation of copper or aluminum, wherein a protective layer of metal oxide or its derivatives forms on the surface, protecting the underlying metal from further oxidation. In other cases, corrosion is...
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Updated: Mar 1, 2026

Construction of a Wireless-Enabled Endoscopically Implantable Sensor for pH Monitoring with Zero-Bias Schottky Diode-based Receiver
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Corrosivity Sensor for Exposed Pipelines Based on Wireless Energy Transfer.

Lydia Lawand1, Oleg Shiryayev2, Khalil Al Handawi3

  • 1Department of Mechanical Engineering, Khalifa University of Science and Technology, Petroleum Institute, P.O. Box 2533, Abu Dhabi, UAE. lyslawand@pi.ac.ae.

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Summary

A new passive sensor detects and quantifies environmental corrosivity for exposed pipelines. This innovation helps prevent failures caused by external corrosion, enhancing pipeline integrity.

Keywords:
corrosionpassive sensors, corrosivitywireless energy transfer

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Area of Science:

  • Materials Science
  • Corrosion Engineering
  • Environmental Monitoring

Background:

  • External corrosion is a primary cause of global pipeline failures.
  • Existing exposed pipelines require effective methods for assessing environmental corrosivity.
  • Accurate corrosivity data is crucial for proactive pipeline maintenance and safety.

Purpose of the Study:

  • To develop a novel sensing solution for detecting and quantifying environmental corrosivity.
  • To create a passive sensor applicable to existing exposed pipelines.
  • To validate the sensor's design and feasibility through simulation and experimentation.

Main Methods:

  • Designed a sensing array using thin strips of pipeline steel.
  • Developed a passive circuit for visual sensor readings.
  • Validated circuit design via simulations and laboratory experiments.
  • Conducted accelerated corrosion tests to confirm sensor feasibility.

Main Results:

  • A passive sensing system for environmental corrosivity was successfully developed.
  • The sensor provides visual readings to operators without constant power.
  • Simulations and lab experiments confirmed the circuit's validity.
  • Accelerated corrosion experiments demonstrated the sensor's feasibility.

Conclusions:

  • The developed passive sensor effectively detects and quantifies environmental corrosivity.
  • This technology offers a practical solution for monitoring existing exposed pipelines.
  • The sensor contributes to enhanced pipeline integrity and failure prevention strategies.