Engineering Commons^™

Application Of Millimeter Wave, Eddy Current And Thermographic Methods For Detection Of Corrosion In Aluminum Substrate, Mohammad Tayeb Ahmad Ghasr, Adam C. Ryley, Sergey Kharkovsky, R. Zoughi, Gary Steffes

Electrical and Computer Engineering Faculty Research & Creative Works

Aluminum structures exposed to the elements are susceptible to corrosion. Corrosion may cause various mechanical and structural deficiencies such as material thinning. It is desirable to rapidly detect and evaluate the properties of an aluminum substrate early in the corrosion process to avoid costly maintenance actions later. There are several nondestructive testing methods for this purpose. To investigate capabilities of millimeter wave, conventional eddy current, and flash thermography techniques for detection of large corrosion areas in aluminum substrates, two corroded samples were inspected with and without dielectric coating (appliqué). This paper presents the results of the c-scan imaging of these …