Dehnungscharakter

Dehnungscharakter refers to a concept in materials science and engineering that describes the extent to which a material can be stretched or deformed before it breaks or permanently changes shape. It is a measure of a material's ductility and elasticity.

A material with a high Dehnungscharakter can undergo significant elongation under tensile stress without fracturing. This is often associated with materials that exhibit elastic deformation, meaning they return to their original shape once the stress is removed, up to a certain point. Beyond this elastic limit, the material enters the plastic deformation region, where permanent changes in shape occur. The Dehnungscharakter encompasses the total elongation possible, including both elastic and plastic deformation.

Conversely, materials with a low Dehnungscharakter are considered brittle. They have a limited capacity for deformation and tend to fracture with little or no prior stretching.

The Dehnungscharakter is an important property for selecting materials for applications where deformation is expected or desired, such as in forming processes, structural components subjected to dynamic loads, or in safety features like crumple zones in vehicles. It is typically quantified through tensile testing, which measures the strain at failure.