28 March 1995 Flash infrared thermography for nondestructive testing (NDT) I/E of naval aircraft
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Abstract
In this effort we have used thermographic techniques to inspect several structures of interest to naval aviation, with the purpose of determining the effectiveness of these techniques in finding flaws/defects. The structures/materials used in this study included metals with metallic and nonmetallic coatings, graphite/epoxy bonded assemblies, ceramic matrix composites, and a boron/epoxy panel. The results that were obtained indicate that IR thermography works well identifying disbonds in coatings and bonded assemblies, quantifying porosity in ceramic matrix composite materials, identifying delaminations, and identifying large amounts of material loss (> 10%). It was not reliable for identifying small amounts of material loss (< 10%), however, efforts are continuing to improve our detection limits and reduce false indications.
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Paul J. Kulowitch, Paul J. Kulowitch, Ignacio M. Perez, Ignacio M. Perez, Dianne M. Granata, Dianne M. Granata, } "Flash infrared thermography for nondestructive testing (NDT) I/E of naval aircraft", Proc. SPIE 2473, Thermosense XVII: An International Conference on Thermal Sensing and Imaging Diagnostic Applications, (28 March 1995); doi: 10.1117/12.204861; https://doi.org/10.1117/12.204861
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