Resilience of material is important, when it is subjected to

Explanation:-

Resilience

• It is the property of materials to absorb energy and to resist shock and impact loads.
• It is measured by the amount of energy absorbed per unit volume within elastic limit this property is essential for spring materials.
• The resilience of material should be considered when it is subjected to shock loading.

Proof resilience

• It is defined as the maximum strain energy stored in a body.
• So, it is the quantity of strain energy stored in a body when strained up to the elastic limit (ability to store or absorb energy without permanent deformation).

Modulus of resilience

• It is defined as proof resilience per unit volume.
• It is the area under the stress-strain curve up to the elastic limit.

When a material is subjected to repeated stresses, it fails at stresses below the yield point stresses. Such type of failure of a material is known as fatigue.

The slow and continuous elongation of a material with time at constant stress and high temperature below the elastic limit is called creep.

Additional Information

Thermal Stress – Stress caused due to the change in temperature

Fatigue – Fatigue occurs when a structure is subjected to cyclic loading.

Wear and tear – This is a deterioration or damage happen to something naturally has over time through normal day to day use.

Modulus of toughness

• It is the ability to absorb energy up to fracture.
• From the stress-strain diagram, the area under the complete curve gives the measure of modules of toughness.