12 May 2015 Real time fatigue damage growth assessment of a composite three-stringer panel using passive thermography
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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.
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Joseph N. Zalameda, Joseph N. Zalameda, Eric R. Burke, Eric R. Burke, Michael R. Horne, Michael R. Horne, James B. Bly, James B. Bly, } "Real time fatigue damage growth assessment of a composite three-stringer panel using passive thermography", Proc. SPIE 9485, Thermosense: Thermal Infrared Applications XXXVII, 948502 (12 May 2015); doi: 10.1117/12.2177719; https://doi.org/10.1117/12.2177719
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