dc.contributor.author |
Nabarro, FRN
|
en_US |
dc.date.accessioned |
2007-03-26T11:42:24Z |
en_US |
dc.date.accessioned |
2007-06-07T10:06:54Z |
|
dc.date.available |
2007-03-26T11:42:24Z |
en_US |
dc.date.available |
2007-06-07T10:06:54Z |
|
dc.date.issued |
2003 |
en_US |
dc.identifier.citation |
Nabarro, FRN. 2003. One-dimensional models of thermal activation under shear stress. Philosophical Magazine, vol. 83(26), pp 3047-3054 |
en_US |
dc.identifier.issn |
1478-6443 |
en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/2056
|
en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/2056
|
|
dc.description.abstract |
The analysis of thermal activation under shear stress in three- and even two-dimensional models presents unresolved problems. The analysis of one-dimensional models presented here may illuminate the study of more realistic models. For the model in which as many dislocations are poised for backward jumps as for forward jumps, the experimental activation volume V-dagger(sigma(a)) under applied stresses close to sigma(a) is different from the true activation volume V(sigma) evaluated at sigma = sigma(a). The relations between the two are developed. A model is then discussed in which fewer dislocations are available for backward than for forward jumps. Finally, the appropriateness of the hyperbolic sine approximation for moderately low stresses is defined and shown to be very limited. |
en_US |
dc.format.extent |
145795 bytes |
en_US |
dc.format.mimetype |
application/pdf |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Taylor & Francis Ltd |
en_US |
dc.rights |
Copyright: 2003 Taylor & Francis Ltd |
en_US |
dc.subject |
Dimensional models |
en_US |
dc.subject |
Shear stress |
en_US |
dc.subject |
Dislocations |
en_US |
dc.subject |
Hyperbolic sine approximation |
en_US |
dc.subject |
Stress analysis |
en_US |
dc.subject |
Materials sciences |
en_US |
dc.subject |
Metallurgical engineering |
en_US |
dc.subject |
Applied physics |
en_US |
dc.title |
One-dimensional models of thermal activation under shear stress |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Nabarro, F. (2003). One-dimensional models of thermal activation under shear stress. http://hdl.handle.net/10204/2056 |
en_ZA |
dc.identifier.chicagocitation |
Nabarro, FRN "One-dimensional models of thermal activation under shear stress." (2003) http://hdl.handle.net/10204/2056 |
en_ZA |
dc.identifier.vancouvercitation |
Nabarro F. One-dimensional models of thermal activation under shear stress. 2003; http://hdl.handle.net/10204/2056. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Nabarro, FRN
AB - The analysis of thermal activation under shear stress in three- and even two-dimensional models presents unresolved problems. The analysis of one-dimensional models presented here may illuminate the study of more realistic models. For the model in which as many dislocations are poised for backward jumps as for forward jumps, the experimental activation volume V-dagger(sigma(a)) under applied stresses close to sigma(a) is different from the true activation volume V(sigma) evaluated at sigma = sigma(a). The relations between the two are developed. A model is then discussed in which fewer dislocations are available for backward than for forward jumps. Finally, the appropriateness of the hyperbolic sine approximation for moderately low stresses is defined and shown to be very limited.
DA - 2003
DB - ResearchSpace
DP - CSIR
KW - Dimensional models
KW - Shear stress
KW - Dislocations
KW - Hyperbolic sine approximation
KW - Stress analysis
KW - Materials sciences
KW - Metallurgical engineering
KW - Applied physics
LK - https://researchspace.csir.co.za
PY - 2003
SM - 1478-6443
T1 - One-dimensional models of thermal activation under shear stress
TI - One-dimensional models of thermal activation under shear stress
UR - http://hdl.handle.net/10204/2056
ER -
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en_ZA |