Researchers at Skoltech conducted a comparative study of two techniques for evaluating mesoscale residual stresses in the aerospace alloy VT6 (Ti-6Al-4V) used to manufacture fan and compressor blades in aircraft engines. The study, published in the journal Measurement, demonstrates how combining gallium (Ga⁺) and xenon (Xe⁺) ion beams within the FIB-DIC (Focused Ion Beam—Digital Image Correlation) method enables reliable measurement of residual stresses in the critical mesoscale range from 0.05 to 0.5 mm.
Multiscale residual stress evaluation can improve the reliability of aircraft engine blades
