Fig. 1 Surface images of Ti6Al4V samples using optical microscope as reported by Varghese and Mujumdar [ 19 ]: ( a ) Wrought (WT), ( b ) AM30, and ( c ) AM46 More

Fig. 2 Experimental setup for micro-endmilling of AM Ti6Al4V More

Fig. 3 Cutting edge radius measurement from digital microscope image More

Fig. 4 Variation of tool cutting edge radius during machining due to wear (error bars depict the values at two repeated trials and circles indicate the beginning of the tertiary wear stage) More

Fig. 5 Variation of cutting force during machining (error bars depict the values at two repeated trials) More

Fig. 6 Wear mechanisms for wrought and AM porous materials after machining lengths of 120     mm and 160   mm More

Fig. 1 Methodology adopted at various stages of machining More

Fig. 2 Schematic representation of micro-end mill as 2DOF Model More

Fig. 3 Deviation of: ( a ) tangential cutting coefficient and ( b ) radial cutting coefficient with cutting velocity and feed rate for a 500  μ m diameter tool More

Fig. 4 ( a ) Schematic of experimental setup and ( b ) micromachining center More

Fig. 5 Closed-loop representation of micromilling process More

Fig. 6 ( a ) Stable and ( b ) unstable plots from Nyquist criterion More

Fig. 7 ( a ) Impact excitation system and ( b ) direct and cross FRF More

Fig. 8 Peak picking method for modal parameter extraction from measured FRFs: ( a ) real part and ( b ) imaginary part More

Fig. 9 Algorithm for optimization of β values for windowing displacement signal at different spindle speeds More

Fig. 10 Selection of exponential window parameter -Beta ( β ) for velocity measured at tip of tool at 60,000 rpm More