Yield strength

Yield strength, or the yield point, is defined in engineering as the amount of strain that a material can undergo before moving from elastic deformation into plastic deformation. Elastic deformation is spring-like deformation, where a material will return to its original shape. The stress felt by a material given a certain strain is defined by linear relationship, with a slope defined by the modulus of elasticity (E). If too much strain is applied, the material will deform permanently, or plastically. The yield point is often defined, due to the lack of a clear border between the elastic and plastic regions, by a 0.2% offset from the linear region. The point where this offset line intersects the stress-strain curve is the yield point.

Related Topics:
Engineering - Strain - Plastic deformation - Modulus of elasticity

~ ~ ~ ~ ~ ~ ~ ~ ~ ~