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Influence from geometrical features on the growth rate of a micro-structurally short fatigue crack

Hansson, Per LU and Melin, Solveig LU (2010) 3rd International Conference on Crack Paths, 2009 In Engineering Fracture Mechanics 77(11). p.1907-1913
Abstract
The influence on the crack growth rate on a micro-structurally short edge crack subjected to fatigue loading from changes in crack length, distance to grain boundaries and applied load has been investigated. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of dislocations along preferred slip planes in the material. The external geometry is modelled by distributed dislocation dipole elements in a boundary element approach under quasi-static and plane strain conditions. The evolving plasticity is described by individual discrete dislocations along a slip plane emanating from the crack in the crack direction. The crack growth rate is shown to be controlled by the plasticity, which in turn is... (More)
The influence on the crack growth rate on a micro-structurally short edge crack subjected to fatigue loading from changes in crack length, distance to grain boundaries and applied load has been investigated. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of dislocations along preferred slip planes in the material. The external geometry is modelled by distributed dislocation dipole elements in a boundary element approach under quasi-static and plane strain conditions. The evolving plasticity is described by individual discrete dislocations along a slip plane emanating from the crack in the crack direction. The crack growth rate is shown to be controlled by the plasticity, which in turn is controlled by geometrical parameters in combination with the external load. (C) 2010 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Grain, Crack growth rate, Short fatigue crack, Discrete dislocations, boundary
in
Engineering Fracture Mechanics
volume
77
issue
11
pages
1907 - 1913
publisher
Elsevier
conference name
3rd International Conference on Crack Paths, 2009
external identifiers
  • WOS:000280285800025
  • Scopus:77954034756
ISSN
1873-7315
DOI
10.1016/j.engfracmech.2010.03.036
language
English
LU publication?
yes
id
af3812a6-c403-44a2-bc01-284bc2e41e81 (old id 1656043)
date added to LUP
2012-07-16 10:00:53
date last changed
2016-10-13 05:06:48
@misc{af3812a6-c403-44a2-bc01-284bc2e41e81,
  abstract     = {The influence on the crack growth rate on a micro-structurally short edge crack subjected to fatigue loading from changes in crack length, distance to grain boundaries and applied load has been investigated. The crack is assumed to grow in a single shear mechanism due to nucleation, glide and annihilation of dislocations along preferred slip planes in the material. The external geometry is modelled by distributed dislocation dipole elements in a boundary element approach under quasi-static and plane strain conditions. The evolving plasticity is described by individual discrete dislocations along a slip plane emanating from the crack in the crack direction. The crack growth rate is shown to be controlled by the plasticity, which in turn is controlled by geometrical parameters in combination with the external load. (C) 2010 Elsevier Ltd. All rights reserved.},
  author       = {Hansson, Per and Melin, Solveig},
  issn         = {1873-7315},
  keyword      = {Grain,Crack growth rate,Short fatigue crack,Discrete dislocations,boundary},
  language     = {eng},
  number       = {11},
  pages        = {1907--1913},
  publisher    = {ARRAY(0x9b1a5d0)},
  series       = {Engineering Fracture Mechanics},
  title        = {Influence from geometrical features on the growth rate of a micro-structurally short fatigue crack},
  url          = {http://dx.doi.org/10.1016/j.engfracmech.2010.03.036},
  volume       = {77},
  year         = {2010},
}