Question

A single crystal of copper yields under a shear stress of 0.62 MPa. The shear modulus of copper is 7.9106 psi. Calculate the approximate ratio of the theoretical to the experimental shear strengths.

Answer 1

Answer:

6370

Explanation:

Given data:

shear stress = 0.62 MPa

shear modulus of copper = 7.9 GPa

Determine the approximate ratio of the theoretical to the experimental shear strengths

lets assume the theoretical yield shear stress = 1/2 shear modulus

theoretical yield shear stress = 7.9 / 2 = 3.95 GPa ≈  3950 MPa

required ratio = $\frac{3950}{0.62}$  ≈ 6370