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Elastic limit in stress strain curve - Material Science
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Q. At which point elastic limit is observed in stress strain curve shown below
- Published on 05 Aug 15
a.
Point B
b.
Point D
c.
Point A
d.
None of the above
ANSWER: Point B
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Discussion
Sravanthi
-Posted on 06 Oct 15
The results obtained in tensile test are represented graphically in the form of stress-strain curve. This stress-strain curve can be used to identify the different properties of a metal regarding its elastic limit, the point of ultimate tensile stress i.e. the point at which maximum stress is observed on the metal.
At point B metal reaches the elastic limit. At this point Hooke's law is not obeyed even if the metal is elastic. Beyond point B plastic deformation starts in the metal. Up to elastic limit if the metal is stressed it can regain its original shape and size even after removal of load.
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