Fracture 11


Fracture 11 :

The separation of an object or material into two, or more, pieces under the action of stress. The fracture of a solid almost always occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops in this case 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. The word fracture is often applied to bones of living creatures (that is, a bone fracture), or to crystals or crystalline materials, such as gemstones or metal. Sometimes, in crystalline materials, individual crystals fracture without the body actually separating into two or more pieces. Depending on the substance which is fractured, a fracture reduces strength (most substances) or inhibits transmission of light (optical crystals). A detailed understanding of how fracture occurs in materials may be assisted by the study of fracture mechanics. A fracture is also the term used for a particular mask data preparation procedure within the realm of integrated circuit design that involves transposing complex polygons into simpler shapes such as trapezoids and rectangles. An OSH glossary used in safety and health at work which is, adopted by ILO  {102}. The term definition has been obtained from the secondary source

No records Found
afaatim.com copyright © April 2016 Dr.K.R.Kamaal. All rights reserved