Liquid ingress recognition in honeycomb structure by pulsed thermography Dapeng Chen, Zhi Zeng, Ning Tao, Cunlin Zhang and Zheng Zhang Eur. Phys. J. Appl. Phys., 62 2 (2013) 20701 Published online: 30 April 2013 DOI: 10.1051/epjap/2013120537