HW8
Problem 8–17 with added parts (of text book) 10 points
A tension test was performed on a magnesium alloy specimen
having a diameter 0.5 in. and gauge length 2 in. The resulting
stress-strain diagram is shown in the figure.
a) Would this material be considered ductile or brittle?
b) Determine the elastic modulus, E
c) What is the strain and axial deformation, 8, when s = 10
ksi? (If linear region use σ=Εε)
d) Determine an approximate yield stress using the 0.2%
offset method
e) If a load P on the specimen develops a strain of e = 0.001
in./in., determine the approximate length of the specimen
between gage point when the load is removed
f) If a load P on the specimen develops a strain of e = 0.004
in./in., determine the approximate length of the specimen
between gage points when the load is removed
g) Assume n = 0.35, determine the lateral strain of the
material when s = 10 ksi. What is the new diameter during
loading?
h) Assume n = 0.35, what is an approximate value for the
shear modulus, G, of this material?