Detecting hidden exfoliation corrosion in aircraft wing skins using thermography

John Prati

doi:10.1117/12.381552

30 March 2000 Detecting hidden exfoliation corrosion in aircraft wing skins using thermography

John Prati

Proceedings Volume 4020, Thermosense XXII; (2000) https://doi.org/10.1117/12.381552
Event: AeroSense 2000, 2000, Orlando, FL, United States

Abstract

A thermal wave (pulse) thermography inspection technique demonstrated the ability to detect hidden subsurface exfoliation corrosion adjacent to countersunk fasteners in aircraft wing skins. In the wing skin, exfoliation corrosion is the result of the interaction between the steel fastener and the aluminum skin material in the presence of moisture. This interaction results in corrosion cracks that tend to grow parallel to the skin surface. The inspection technique developed allows rapid detection and evaluation of hidden (not visible on the surface) corrosion, which extends beyond the head of fastener countersinks in the aluminum skins.

Citation Download Citation

John Prati "Detecting hidden exfoliation corrosion in aircraft wing skins using thermography", Proc. SPIE 4020, Thermosense XXII, (30 March 2000); https://doi.org/10.1117/12.381552

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