Metallurgical Engineering > GATE 2021 > Stress-Strain
For uniaxial tensile stress-strain behaviour of polycrystalline aluminium, which one of the following statements is FALSE?
A
True stress is always higher than the engineering stress.
B
At the ultimate tensile stress point on the true stress-strain curve, dσ/dε = 0
C
Resilience is the area under the elastic region of the engineering stress-strain curve.
D
Maximum true stress does not correspond to the maximum load.

Correct : b

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