Civil Engineering MCQAE Level Civil Engineering
Proof stress of a material corresponds to:
Strength of MaterialsProof Stress DefinitionEASY
Choose the correct answer
A
Maximum load
B
Fracture point
C
A specified permanent set (0.1% or 0.2%)
D
First crack formation
Correct Answer
C. A specified permanent set (0.1% or 0.2%)
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Proof stress (offset yield strength) = stress causing a specified permanent plastic strain (usually 0.2%).
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