Slide 8
You may or may not
come up with shear modulus values that agree with the textbook values
for the material under consideration. One thing to think about is
the assumption implicit in the formula relating shear modulus to
sample stiffness. That is, that only the gauge section is deforming.
Is this really true? If not, you might want to consider how you
could either redesign the experiment to reduce the error due to
this assumption, or think of a method to account for deformation
in the gauge section.
