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Proceedings Paper

Real time detection of damage during quasi-static loading of a single stringer panel using passive thermography
Author(s): Joseph N. Zalameda; Michael R. Horne
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Paper Abstract

Real time nondestructive evaluation is required for composites load testing. The early detection and measurement of damage progression is important to understand failure modes. A single stringer panel was subjected to quasi-static loading to induce deformation which can result in the formation of delamination damage between the stiffener flange and skin. Passive thermography was used to detect damage in real time as a function of the applied load. The loading was stopped when damage growth was detected. Of particular interest was the early detection of damage formation which can be challenging, as compared to cyclic fatigue loading. Passive thermography data were acquired and processed in real time and revealed damaged areas due to heating from fiber breakage and delamination formation. The processed thermal imagery was also compared to acoustic emission and ultrasound data.

Paper Details

Date Published: 14 May 2018
PDF: 8 pages
Proc. SPIE 10661, Thermosense: Thermal Infrared Applications XL, 106610H (14 May 2018); doi: 10.1117/12.2305613
Show Author Affiliations
Joseph N. Zalameda, NASA Langley Research Ctr. (United States)
Michael R. Horne, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 10661:
Thermosense: Thermal Infrared Applications XL
Douglas Burleigh; Jaap de Vries, Editor(s)

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