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Proceedings Paper

Real time fatigue damage growth assessment of a composite three-stringer panel using passive thermography
Author(s): Joseph N. Zalameda; Eric R. Burke; Michael R. Horne; James B. Bly
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Paper Abstract

Fatigue testing of advanced composite structures is critical to validate both structural designs and damage prediction models. In-situ inspection methods are necessary to track damage onset and growth as a function of load cycles. Passive thermography is a large area, noncontact inspection technique that is used to detect composite damage onset and growth in real time as a function of fatigue cycles. The thermal images are acquired in synchronicity to the applied compressive load using a dual infrared camera acquisition system for full (front and back) coverage. Image processing algorithms are investigated to increase defect contrast areas. The thermal results are compared to non-immersion ultrasound inspections and acoustic emission data.

Paper Details

Date Published: 12 May 2015
PDF: 9 pages
Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 948502 (12 May 2015); doi: 10.1117/12.2177719
Show Author Affiliations
Joseph N. Zalameda, NASA Langley Research Ctr. (United States)
Eric R. Burke, NASA Langley Research Ctr. (United States)
Michael R. Horne, NASA Langley Research Ctr. (United States)
James B. Bly, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 9485:
Thermosense: Thermal Infrared Applications XXXVII
Sheng-Jen (Tony) Hsieh; Joseph N. Zalameda, Editor(s)

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