Question

Consider the following statements regarding the stress strain diagram: Which of the given statements are correct?

1. Hooke's law is followed up to the elastic limit.
2. The stress at which a material elongates without an increase in load is called as yield stress.
3. Toughness is usually represented by the area under a stress

• A. ii, iii
• B. All
• C. ii only
• D. i, iii

Answer 1

Answer:

A. ii, iii

Hooke's law up to the proportional limit, not the elastic limit. Yield stress is the stress at which a material elongates without an increase in load. Toughness is represented by the area under the curve.