Question

The maximum energy that a given component can absorb without undergoing any permanent deformation up to elastic limit is known as

• A. Hardness
• B. Toughness
• C. Resilience
• D. Proof resilience

Hint:

Differentiate the energy terms using the stress-strain curve:
- Modulus of Resilience: Area under the curve up to the yield point (a material property).
- Proof Resilience: Total energy stored up to the elastic limit (for a specific component).
- Toughness: Total area under the entire curve up to fracture.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
The question asks for the specific term for the maximum amount of strain energy a material can absorb within its elastic limit.

Step 2: Detailed Explanation:
Let's define the energy-related material properties:

• (C) Resilience: This is the general ability of a material to absorb energy when deformed elastically and to release this energy upon unloading. The area under the elastic portion of the stress-strain curve is known as the modulus of resilience.

• (D) Proof Resilience: This is the

maximum strain energy that can be stored in a material. It corresponds to the total strain energy stored at the elastic limit. It is the area under the stress-strain curve up to the elastic limit point. This precisely matches the question's description.

• (B) Toughness: This is the ability of a material to absorb energy and plastically deform before fracturing. It is represented by the total area under the entire stress-strain curve, up to the point of fracture.

• (A) Hardness: This is the resistance to localized plastic deformation like scratching. It is not an energy absorption property in this context.


The key phrases are "maximum energy" and "up to elastic limit," which specifically define Proof Resilience.

Step 3: Final Answer:
The maximum energy that a given component can absorb without undergoing any permanent deformation up to the elastic limit is known as proof resilience.