Measurement of plastic strain and plastic strain rate during orthogonal cutting for Ti-6Al-4V

Finite Element Modelling used to predict machining outcomes needs be supplied with the appropriate material thermomechanical properties which are obtained by specific testing devices and methodologies. However, these tests usually not representative of extreme conditions achieved in processes law may suitable enough. Inverse identification could address this problem obtaining directly from such as cutting forces, temperatures, strain or rates. Nevertheless, technique accurate outcomes. some them rate difficult properly measured. The aim paper is present a methodology measure plastic during orthogonal under plane conditions. main idea create physical microgrid workpiece analyze distortion suffered grid. novelty method consists on its capability measuring fields very localized area (primary shear zone) using single image. was applied Ti-6Al-4V that broaching process. Experimental results were compared DIC measurements, analytical based unequal division zone model, literature numerical an AdvantEdge-2D model.