Question: 3 points A rectangular block of the same steel alloy, was subjected to an identical tensile stress as problem 1 5 . If the length

3 points
A rectangular block of the same steel alloy, was subjected to an identical tensile stress as problem 15. If the length of this block is \( L_{0}=56\mathrm{~mm}\) before loading, what is the residual length increase (\(\mathrm{L}-\mathrm{L}_{0}\)) after the load is removed?
Hint: During unloading, the path on the stress strain curve would be parallel to the elastic portion of the curve
3 points A rectangular block of the same steel

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