In-Situ Corrosion Sensor
Suitable for field use or laboratory test chamber/immersion
Permanent electrode is available for inaccessible regions
Hand-held sensor is available for structures/areas without a permanent sensor
Arbitrary structure configuration
Easy set-up/inspection
Inspection can detect corrosion over large areas
Capable of detecting moisture in composites and adhesive bonds
Conventional EIS
Requires immersion or clamp-on liquid cell or similar gel/sponge cells
Cell requires accessible, flat, horizontal area, messy electrolyte, and remote electrodes
Set-up is time consuming and must be performed for each measurement
Corrosion is detected only directly under cell
Can cause artifactual damage to coating
Not suitable to detect moisture in composites or adhesive bonds
In-Situ Sensor to Detect Moisture Intrusion and Degradation of Coatings, Composites, and Adhesive Bonds, G.D. Davis, C.M. Dacres, and L.A. Krebs, DACCO SCI Inc.