Nondestructive evaluation of aircraft coatings with infrared diffuse reflectance spectra

Hans G. Korth; Kody A. Wilson; Kevin C Gross; Michael R. Hawks; Timothy W. C. Zens

doi:10.1117/12.2178177

12 May 2015 Nondestructive evaluation of aircraft coatings with infrared diffuse reflectance spectra

Hans G. Korth, Kody A. Wilson, Kevin C Gross, Michael R. Hawks, Timothy W. C. Zens

Proceedings Volume 9485, Thermosense: Thermal Infrared Applications XXXVII; 948503 (2015) https://doi.org/10.1117/12.2178177
Event: SPIE Sensing Technology + Applications, 2015, Baltimore, MD, United States

Abstract

Aircraft coatings degrade over time, but aging can be difficult to detect before failure and delamination. We present a method to evaluate aircraft coatings in situ using infrared diffuse reflectance spectra. This method can detect and classify coating degradation much earlier than visual inspection. The method has been tested on two different types of coatings that were artificially aged in an autoclave. Spectra were measured using a hand-held diffuse reflectance infrared Fourier transform spectrometer (DRIFTS). One set of 72 samples can be classified as either aged or unaged with 100% accuracy. A second sample set contained samples that had been artificially aged for 0, 24, 48 or 96 hours. Several classification methods are compared, with accuracy better than 98% possible.

Citation Download Citation

Hans G. Korth, Kody A. Wilson, Kevin C Gross, Michael R. Hawks, and Timothy W. C. Zens "Nondestructive evaluation of aircraft coatings with infrared diffuse reflectance spectra", Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 948503 (12 May 2015); https://doi.org/10.1117/12.2178177

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available