Question:
Structural steel forms neck before it breaks. Neck formation starts
Structural steel forms neck before it breaks. Neck formation starts
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Necking begins after the yield strength, as the material undergoes plastic deformation before breaking.
Updated On: Sep 17, 2025
- before limit of proportionality
- after yield strength
- before ultimate strength
- at ultimate strength
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The Correct Option is B
Solution and Explanation
Step 1: Understand the behavior of steel under stress.
In the stress-strain curve for structural steel, necking occurs after the material has yielded. The material begins to deform plastically after the yield point and necking starts before the ultimate strength. Step 2: Conclusion.
Necking is a localized reduction in the cross-sectional area of the material and begins after the yield point, not at the ultimate strength. Final Answer: \[ \boxed{\text{after yield strength}} \]
In the stress-strain curve for structural steel, necking occurs after the material has yielded. The material begins to deform plastically after the yield point and necking starts before the ultimate strength. Step 2: Conclusion.
Necking is a localized reduction in the cross-sectional area of the material and begins after the yield point, not at the ultimate strength. Final Answer: \[ \boxed{\text{after yield strength}} \]
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