What term describes deformation or change in shape of a metal when a stress is applied?

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Multiple Choice

What term describes deformation or change in shape of a metal when a stress is applied?

Deformation or change in shape when a load is applied is described by strain. Strain measures how much the dimensions of the metal change relative to its original size, usually expressed as the change in length divided by the original length (a dimensionless quantity that can be shown as a percentage). If the material returns to its original shape after removing the load, that’s elastic strain; if the change remains, it’s plastic strain. Stress is the internal force per unit area that causes the deformation, elasticity is the material’s ability to recover its shape after unloading, and hardness is the resistance to permanent surface deformation.

Deformation or change in shape when a load is applied is described by strain. Strain measures how much the dimensions of the metal change relative to its original size, usually expressed as the change in length divided by the original length (a dimensionless quantity that can be shown as a percentage). If the material returns to its original shape after removing the load, that’s elastic strain; if the change remains, it’s plastic strain.

Stress is the internal force per unit area that causes the deformation, elasticity is the material’s ability to recover its shape after unloading, and hardness is the resistance to permanent surface deformation.

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