Synchrotron Radiation X-ray Imaging and Dynamic Characterization

Large-scale synchrotron radiation facilities such as Spring-8, this research direction develops high spatiotemporal resolution X-ray imaging and characterization methods for laser processing, exploiting the unique advantages of high brightness, high coherence, and energy tunability. A primary focus is time-resolved X-ray phase-contrast imaging to enable in-situ dynamic observation of laser-induced melt pool flow, pore nucleation and growth, shockwave propagation, and phase front movement. Complementary techniques, including X-ray diffraction, small-angle X-ray scattering, and fluorescence analysis, are employed to characterize crystal structure evolution, elemental distribution, and residual stress evolution during processing. By deeply integrating synchrotron experiments with multi-physics modeling, this approach reveals the fundamental physical mechanisms underlying laser processing, providing critical experimental data for process optimization and material design.