In which of the following cases does a material exhibit plastic deformation?

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Question: In which of the following cases does a material exhibit plastic deformation?

Options:

Correct Answer: When the stress exceeds the yield point

Solution:

Plastic deformation occurs when the stress exceeds the yield point.

In which of the following cases does a material exhibit plastic deformation?

In which of the following cases does a material exhibit plastic deformation?

Step 1: Understand what plastic deformation means. It is when a material changes shape permanently after being stressed.
Step 2: Know what stress is. Stress is the force applied to a material divided by the area over which the force is applied.
Step 3: Learn about the yield point. The yield point is the amount of stress at which a material begins to deform plastically.
Step 4: Identify when plastic deformation occurs. It happens when the applied stress is greater than the yield point of the material.

Plastic Deformation – Plastic deformation is the permanent change in shape or size of a material when subjected to stress beyond its yield point.
Yield Point – The yield point is the stress level at which a material begins to deform plastically.