Fracture

$Brittle fracture in glass$

$Fracture of an aluminum crank arm, where Bright= brittle fracture, Dark= fatigue fracture.$

Ductile failure of a specimen strained axially

A fracture is the 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 of displacement, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially to the surface of displacement, it is called a shear crack, slip band, or dislocation. Fracture strength or breaking strength is the stress when a specimen fails or fractures.

单词	Fibrous fracture
释义	Fibrous fracture 英语百科 Fracture $Brittle fracture in glass$ $Fracture of an aluminum crank arm, where Bright= brittle fracture, Dark= fatigue fracture.$ A fracture is the 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 of displacement, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially to the surface of displacement, it is called a shear crack, slip band, or dislocation. Fracture strength or breaking strength is the stress when a specimen fails or fractures.
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Fibrous fracture

Fracture