A steam pipe with an exterior temperature 120◦C and outside diameter 10 cm is covered with a 5 cm layer of asbestos (k = 0.15 W m−1 K −1 ) insulation. If the outside surface of the insulation is at 35◦C, calculate the heat transfer rate from the steam pipe per unit length of pipe. Calculate the thermal resistance of the insulation for a unit length of pipe

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.