Definition - What does Resilience mean?

Resilience is the ability of a material to absorb energy under elastic deformation and to recover this energy upon removal of load. Resilience is indicated by the area under the stress strain curving to the point of elastic limit. In a technical sense, resilience is the property of a material that allows it return to its original shape after being deformed.

Corrosionpedia explains Resilience

Resilience is the property of a material that enables it to resume its original shape or position after being bent, stretched or compressed. Rubber is known for this property. It is usually measured by the modulus of resilience, which is the strain energy per unit volume required to stress the material from zero stress to the yield stress. This property is essential for spring materials.

Proof resilience originated from resilience is defined as the maximum energy that can be absorbed within the elastic limit, without creating a permanent distortion. The modulus of resilience is the maximum energy that can be absorbed per unit volume without creating a permanent distortion. It can be calculated by integrating the stress-strain curve from zero to the elastic limit. The modulus of elasticity is also called the modulus of resilience. It is a measure of the elastic behavior of a material.

    Modulus of Resilience = (Yield strength)2 / 2 Modulus of elasticity

Resilience is measured in the unit of joule per cubic meter (J·m-3) in the SI system, which is equivalent to elastic deformation energy per volume of test specimen.

Like the unit of tensile toughness, the unit of resilience can be easily calculated by using area underneath the stress-strain (s-e) curve.

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