Inspection of internal defects and impact damage based on FM-PCT (IMAGE)
Caption
By employing either flash pulse excitation or linear laser scanning, thermophotonic energy penetrates the material’s interior and evolves with time. The acquired relaxation signals are then processed through truncated correlation using frequency-incremented units. This approach enables depth-encoded signals to produce tomograms with high axial resolution, leveraging the quantitative relationship between heat diffusion length and frequency. We present both simulation and experimental results for stainless steel samples with four holes and carbon plates subjected to impact-induced damage.
Credit
By Pengfei Zhu, Rongbang Wang, Koneswaran Sivagurunathan, Stefano Sfarra, Fabrizio Sarasini, Clemente Ibarra-Castanedo, Xavier Maldague, Hai Zhang and Andreas Mandelis
Usage Restrictions
Credit must be given to the creator.
License
CC BY