Structural Integrity, Corrosion Monitoring

Electrochemical methods are among the most effective and commonly used to monitor the progressing of corrosion in infrastructures.

The corrosion mechanism taking place in an aqueous or vapor phase is electrochemical in nature. The electrochemical signal is one of the primary sources of information that relates to behavior in potential, current, and electrical charge of a corroding specimen. It arises from processes that cause corrosion and other electrochemical reactions. When applied online for monitoring in-situ uniform, localized, galvanic, or more forms of corrosion, electrochemical techniques are very convenient means to measure corrosion rate of materials.

The SENSIPLUS microchip once configured with three electrode potentiostatic measurement can be used for online monitoring of the linear polarization resistance (LPR), an indicator of the corrosion trend, or it can forecast corrosion by electrochemical impedance spectroscopy (EIS), while the rate of corrosion is best assessed using harmonic distortion analysis (HDA), which is also supported by SENSIPLUS with its capability to demodulate the 2nd and 3rd harmonic of the applied sinewave.

Concurrently SENSIPLUS will sense relevant environmental parameters such Temperature, Moisture, pH or Relative Humidity to improve the corrosion indicators.

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