Question 1

A flat tensile test specimen with a thickness of 4.6 mm, as indicated by the cross hatched cross section shown, is clamped in a tensile test machine over 10 mm at each end, as indicated by the shaded areas in the figure. The width of the clamped section is 5.7 mm while the width of the gauge section is 4.5 mm. This is a titanium alloy specimen so E = 110 GPa.

1.1 Determine the load (internal force) in the 20-mm gauge section when the strain in this section is 0.001.

Give your answer to 3 significant figures.