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04) a) Two points on a true stress-strain curve for aluminum alloy are σ MPa at ε= 0.05 and σ-303MPa at ε 0.15. Using power law, predict the true stress at a strain of ε-0.30. Compare the true stress...
2) Draw two schematic graphs using pencil showing a typical stress-strain curve for aluminum. The first graph should show engineering stress vs engineering strain, and the second graph should show true stress vs true strain. Label the showing: (i) elastic modulus (ii) proportional limit (iii) yield stress (iv) yield strain (v) fracture stress (vi) fracture strain on each graph. You may show both graphs on one plot. (5 points)