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strain
(redirected from Strain hardening)

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strain: see strength of materials strength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an elastic body upon the adjoining part, and strain is the deformation
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strain

In the physical sciences and engineering, a number that describes the relative deformation of elastic, plastic, and fluid materials under applied forces. It arises throughout the material as the particles of the material are displaced from their usual position. Normal strain is caused by forces perpendicular to planes or cross sections of the material, such as in a volume that is under pressure on all sides. Shear strain is caused by forces that are parallel to, and lie in, planes or cross sections, such as in a short metal tube that is twisted about its longitudinal axis. See also deformation and flow.


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This difference could be due to the differences in strain hardening of octene based EAO copolymers versus butene based EAO copolymers, it has been postulated that this increase in strain hardening (i.
In cyclic loading, the Ramberg-Osgood stress-strain relationship for the strain hardening exponent (n) and the strength coefficient (K) typically changes as the material hardens, or softens, until a stable state is reestablished.
This strain hardening causes internal bubble pressure to increase and decrease at 2- to 10-sec intervals, so film width varies.
 
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