Thermal inspection of composite honeycomb structures

Joseph N. Zalameda; F. Raymond Parker

doi:10.1117/12.2052938

21 May 2014 Thermal inspection of composite honeycomb structures

Joseph N. Zalameda, F. Raymond Parker

Proceedings Volume 9105, Thermosense: Thermal Infrared Applications XXXVI; 91050C (2014) https://doi.org/10.1117/12.2052938
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

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.

Citation Download Citation

Joseph N. Zalameda and F. Raymond Parker "Thermal inspection of composite honeycomb structures", Proc. SPIE 9105, Thermosense: Thermal Infrared Applications XXXVI, 91050C (21 May 2014); https://doi.org/10.1117/12.2052938

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