723919.fig.005a
(a)
723919.fig.005b
(b)
723919.fig.005c
(c)
Figure 5: Stereometric image of surface after machining and its profilogram (a) the EDM−U = 160 (V), I = 6 (A), Ti = 100 (μs), and the following roto-peen (b)  (rev/min),  (min), (c)  (rev/min),  (min).