Mechanical Engineering - Engineering Materials - Discussion

Answer should be thoughness. Toughness stores energy in plastic range whereas resilience stores energy in elastic range only.

Toughness is the right answer.

Why not Toughness?

Toughness is cent percent right answer.

Answer is not correct:

Resilience - The ability of a material to absorb energy when deformed elastically and to return it when unloaded.

Toughness - Ability of a material to absorb energy in deformation in the plastic range.

So, the answer should be [D].

Resilience is ability of material. It absorb energy upto elastic range.

What should be the answer? Resilience or toughness?

Answer is not correct it should be toughness.

The area in the stress strain diagram upto plastic point called resilience.

Resilience: The ability of a material to absorb energy under elastic deformation and to recover this energy upon removal of load is termed as resilience. Resilience is indicated by the area under the stress strain curve till the point of elastic limit.

Creep: It is a deformation of a material due to the constant load for a long period of time. It is time and temperature dependent property of material.

Fatigue: When a body is subjected to repeated and fluctuating load it tends to develop a characteristic behavior under which failure occurs which is referred to as fatigue.

Toughness: The ability of a material to absorb energy in plastic deformation till the point of fracture is known as toughness. Toughness is indicated by the total area under the stress strain curve up to the fracture point. Eg. Copper has higher toughness than Cast iron.