Photothermal and Photo Acoustic Investigation of Zirconia Coating Delaminations

Ageing evaluation of thermal barrier coatings by thermal diffusivity

“…Concerning disbonding defect detection, active thermography since some years has been successfully applied for in field nondestructive integrity assessment of TBC deposited on blades, vanes and transition pieces [12][13][14][15]. Monitoring the TBC degradation is a more complex and new item requiring the development of a specific strategy.…”

Ageing evaluation of thermal barrier coating: comparison between pulsed thermography and thermal wave interferometry

“…In such a case the detection scheme are based on 1D models of the heat transfer (Balageas et al, 1986;MacLachlan Spicer et al, 1989;Cernuschi et al, 1995;Oksanen et al, 1996;Marinetti et al, to be published). Monitoring the life of TBC and possibly forecasting the time of replacing them before the spallation, is still an open problem.…”