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Proceedings Paper

Thermography inspection for early detection of composite damage in structures during fatigue loading
Author(s): Joseph N. Zalameda; Eric R. Burke; F. Raymond Parker; Jeff P. Seebo; Christopher W. Wright; James B. Bly
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Paper Abstract

Advanced composite structures are commonly tested under controlled loading. Understanding the initiation and progression of composite damage under load is critical for validating design concepts and structural analysis tools. Thermal nondestructive evaluation (NDE) is used to detect and characterize damage in composite structures during fatigue loading. A difference image processing algorithm is demonstrated to enhance damage detection and characterization by removing thermal variations not associated with defects. In addition, a one-dimensional multilayered thermal model is used to characterize damage. Lastly, the thermography results are compared to other inspections such as non-immersion ultrasonic inspections and computed tomography X-ray.

Paper Details

Date Published: 18 May 2012
PDF: 9 pages
Proc. SPIE 8354, Thermosense: Thermal Infrared Applications XXXIV, 835403 (18 May 2012); doi: 10.1117/12.918126
Show Author Affiliations
Joseph N. Zalameda, NASA Langley Research Ctr. (United States)
Eric R. Burke, NASA Langley Research Ctr. (United States)
F. Raymond Parker, NASA Langley Research Ctr. (United States)
Jeff P. Seebo, Lockheed Martin Corp. (United States)
Christopher W. Wright, NASA Langley Research Ctr. (United States)
James B. Bly, Lockheed Martin Corp. (United States)

Published in SPIE Proceedings Vol. 8354:
Thermosense: Thermal Infrared Applications XXXIV
Douglas Burleigh; Gregory R. Stockton, Editor(s)

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