1. Spectral nondestructive evaluation—SNDE.
- Author
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Di Marzio, D., McLaughlin, J. S., Chu, S., Fonneland, N., and Weir, J.
- Subjects
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SPECTRAL reflectance , *PAINT - Abstract
Programmed paint stripping and repainting for commercial and military aircraft inspection consumes a large amount time and money and generates considerable amounts of toxic waste. A technique is required that detects surface cracks and corrosion of metallic aerostructures while leaving the paint coating intact. We have investigated the use of infrared spectral reflectance techniques for seeing through paint coatings to the underlying substrate. Many commercial and milspec primers and topcoats exhibit an optically transparent window in the mid-IR range which permits the extraction of spectral reflectance signatures from as well as allowing imaging of the substrate. Both diffuse reflectance and multispectral IR focal plane imaging is used to successfully detect corrosion and surface morphology of painted metal surfaces. © 2001 American Institute of Physics. [ABSTRACT FROM AUTHOR]
- Published
- 2001