Details pertaining to an orthogonal metal cutting process are given below.
Chip thickness ratio 0.4
Under formed thickness 0.6mm
Rake angle + 100
Cutting speed 2.5m/s
Men thickness of primary shear zone 25microns
The shear strain rate in s-1 during the process is
(a) 0.1781 x 105 (b) 0.7754 x 105
(c) 1.0104 x 105 (d) 4.397 x 105