Maro Publications

Fracture

Notes

Patent Abstracts

Patent Titles

*9/9/2013 
from 9/2/2013

Maro Encyclopedia

Mechanical

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Notes

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 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.[1]

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.

(Fracture, Wikipedia, 9/2/2013)

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Patent Abstracts

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Patent Titles

9/3/2013

2. 8,524,356 
Bonded patch having multiple zones of fracture toughness 

5/28/2013

1. 8,448,500 
High pressure fracture tester

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Interested!!
Bookmark this page to follow future developments!.
(RDC 7/16/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921
E-Mail: cornelrd@bee.net  

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Copyright 2013 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 9/2/2013.