Recent advances in digital thermography for nondestructive evaluation

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Abstract
The objective of the present project is to develop improved thermographic techniques for the detection of subsurface flaws and disbonds in various aerospace materials. The scope of the effort to be presented in this paper includes the following: (1) the development of digital thermographic imaging capabilities, (2) the comparison of thermographic experimental results with models, and (3) the demonstration of thermographic methodologies to detect defects in composite materials. Based on the material to be presented it will be demonstrated that digital infrared thermography has useful applications for flaw detection in composites and potential applicability for detection of metallic corrosion under paint.

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