![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/DuctileFailure.jpg/640px-DuctileFailure.jpg&w=640&q=50)
Fracture
Split of materials or structures under stress / From Wikipedia, the free encyclopedia
Fracture is the appearance of a crack or complete separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially, it is called a shear crack, slip band, or dislocation.[1]
This article needs additional citations for verification. (September 2010) |
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/DuctileFailure.jpg/640px-DuctileFailure.jpg)
Brittle fractures occur without any apparent deformation before fracture. Ductile fractures occur after visible deformation. Fracture strength, or breaking strength, is the stress when a specimen fails or fractures. The detailed understanding of how a fracture occurs and develops in materials is the object of fracture mechanics.