A tension test was conducted for a material called MatX and the following stress-strain curve was obtained. Determine the change in the diameter of the bar made of MatX under the loading shown below. Assume Poisson's ratio is 0.2. Please clearly state if the diameter contracts or elongates. Write your final answer in the textbox below. Stress SAN 200 Stress-strain values of MatX &-0.001 mm/mm G-0.010 mm/mm & -0.100 mm/mm 6- 50 MPa A- 80 MPa 20 mm AN Strain

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