Question

 Problem 04: A cylindrical metal specimen 15.0 mm in diameter and 150 mm long is to be subjected to a tensile stress of 50 MPa; at this stress level the resulting deformation will be totally elastic. (a) If the elongation must be less than 0.072 mm, which of the metals in following Table are suitable candidates? Why? (b) If, in addition, the maximum permissible diameter decrease is 2.3 x 10-3 mm when the tensile stress of 50 MPa is applied, which of the metals that satisfy the criterion in part (a) are suitable candidates? Why?

 Problem 05: For a brass alloy, the following engineering stresses produce the corresponding plastic engineering strains, prior to necking:

 On the basis of this information, compute the engineering stress necessary to produce an engineering strain of 0.28.

Answer 1