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The point after the proportionality limit on the stress-strain curve is known as

The point after the proportionality limit on the stress-strain curve is known as Correct Answer Elastic limit

The correct answer is option 1) i.e. Elastic limit.

CONCEPT:

  • CONCEPT:

  • Stress-strain curve: It is the curve representing the relationship between stress and strain.
    • The curve is obtained by applying different amounts of loads(stress) on a test material and recording the respective deformation(strain) in the load.
    • The curve is useful in estimating the different properties of a material such as Elastic modulus, yield strength, ultimate tensile strength etc.

​ Additional Information

  • Upper and lower yield point: The stress at which the material starts to yield or starts transiting from elastic to plastic deformation is called the upper yield limit or upper yield stress point. As deformation continues, the stress falls abruptly to a value called the lower yield point.
  • The maximum stress that a material can withstand while being elastic is called ultimate stress and the point is called the ultimate stress point.

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