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Evaluation of Residual Stresses Induced by Ultra-high-Speed Drilling in Aluminium alloys
Authors: J.P. Nobre, R. Guimarães, A.C. Batista, M.J. Marques, L. Coelho, A. Nau, B. Scholtes
Ref.: Materials Science Forum 768-769, 128-135 (2014)
Abstract: A hybrid experimental-numerical methodology is applied to evaluate the unwanted stresses induced by hole-drilling in two 5000 and 7000 series aluminium alloys. The influence of the cutting speed of ultra-high speed drills powered by turbine systems by compressed air, which are commonly used in the hole-drilling equipments for residual stress measurements, is analyzed. The comparison of the effect of different drilling conditions on the drilled material using a quantitative approach is now possible. The applied methodology can play an important role on the improvement and optimization of the hole-drilling technique for residual stress measurements in particular and the drilling process in general.
