21 May 2014 Thermal inspection of composite honeycomb structures
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Abstract
Composite honeycomb structures continue to be widely used in aerospace applications due to their low weight and high strength advantages. Developing nondestructive evaluation (NDE) inspection methods are essential for their safe performance. Pulsed thermography is a commonly used technique for composite honeycomb structure inspections due to its large area and rapid inspection capability. Pulsed thermography is shown to be sensitive for detection of face sheet impact damage and face sheet to core disbond. Data processing techniques, using principal component analysis to improve the defect contrast, are presented. In addition, limitations to the thermal detection of the core are investigated. Other NDE techniques, such as computed tomography X-ray and ultrasound, are used for comparison to the thermography results.
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Joseph N. Zalameda, Joseph N. Zalameda, F. Raymond Parker, F. Raymond Parker, } "Thermal inspection of composite honeycomb structures", Proc. SPIE 9105, Thermosense: Thermal Infrared Applications XXXVI, 91050C (21 May 2014); doi: 10.1117/12.2052938; https://doi.org/10.1117/12.2052938
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