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Dynamical Observation of Heat Flow and the NDI in a Simulated Welded Zone using Active Thermography with a Coolant Material

H. Endoh, T. Hoshimiya
2012 Proceedings of the 2012 International Conference on Quantitative InfraRed Thermography   unpublished
An active thermographic imaging system was constructed, in which a cooling material contacts the surface and scans over a welded zone of two stainless plates. Both a time-varying thermographic image and a real-time response of each pixel were recorded. A thermal image showed that the heat flow from the welded zone toward the cooling material apparently forms an isolated high-temperature region which indicates the existence of a subsurface simulated welding defect. This method is a simple, easy
more » ... is a simple, easy and high-precision nondestructive inspection (NDI) technique using active thermography.
doi:10.21611/qirt.2012.339 fatcat:3g3idb4bpvbenc6trnt2dtkasy