Model-Based Studies of Eddy Current Sensors for the Characterization of Corrosion under Coatings
Abstract
Steel and aluminum infrastructures can corrode when exposed to harsh environmental conditions, such as extreme moisture or temperature. Consequently, these structures are coated with protective layers in an effort to reduce corrosion damage. However, when corrosion is hidden by paint or coatings with certain electrical and magnetic properties, the damage can be detected visually only after the paint blisters, which occurs after the corrosion damage is severe. Hence, there is a need for developing nondestructive evaluation (NDE) methods for early detection and quantification of corrosion under coatings. This paper investigates the development of an eddy current sensor array system for early detection and quantification of corrosion under coating in steel and aluminum samples. The feasibility and effectiveness of the approach is investigated using a combination of model-based and experimental data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 21, 2020
- Accession Number
- AD1119332
Entities
People
- Daniel Bartles
- Eric Tarkleson
- Lalita Udpa
- Mahmoodul Haq
- Tom Sanders
Organizations
- United States Army Tank Automotive Research, Development and Engineering Center