Question
Download Solution PDFWhich one of the following statements is NOT correct?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Mild steel stress-strain curve:
A → Limit of proportionality point
B → Elastic limit point
C' → Upper yield point
C → Lower yield point
D → Strain hardening start point
E → Ultimate strength point or maximum stress point
F → Fracture point (rupture strength)
- Rupture strength; It is the stress corresponding to the failure point F of the stress-strain curve.
- Rupture strength is less than ultimate strength.
- Ultimate strength is the maximum stress of the material.
- Ultimate strength is the ratio of maximum load (ultimate load) to the original cross-sectional area.
- Yield stress is the lowest stress at which the extension of the test piece increases without a further increase in load.
Statement (1) is the incorrect statement about structural steel. Hence option (1) is the correct answer.
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