If the longitudinal feed in center-less grinding is expressed by
$${V_f} = \pi \,D.\,\,N\,\sin \,\alpha ,\,\,D$$ stands for

In small lot production for machining $$T-$$slots on machine tables, it is expected to use

When $$1.0\% $$ plain carbon steel is slowly cooled from the molten state to $$740C,$$ the resulting structure will contain

The three - dimensional state of stress at a point is given by: $$$\left[ \sigma \right] = \left[ {\matrix{ {30} & {10} & { - 10} \cr {10} & 0 & {20} \cr { - 10} & {20} & 0 \cr } } \right]MN/{m^2}$$$

The shear stress in the $$x-y$$ plane at the same point is then equal to