Question

The bending stress in a machine part fluctuates between the tensile stress of 250 n/m2 and compressive stress of 140 n/mm2. What should be the minimum ultimate tensile strength of this part to carry this fluctuation indefinitely according to i) goodman’s formula ii0 soderberg formula. The factor of safety =1.75. Assume that the yield point is never likely to be less than 55% of the ultimate tensile strength or greater than 93% of it.

Answer 1

The main Allied powers were Great Britain, The United States, China, and the Soviet Union. The leaders of the Allies were Franklin Roosevelt (the United States), Winston Churchill (Great Britain), and Joseph Stalin (the Soviet Union).