Influence of fatigue load range on the growth of a microstructurally short edge crack simulated by a discrete dislocation formulation
(2006) In International Journal of Fatigue 28(7). p.714-721- Abstract
- Quasistatic propagation of a short edge crack, located within one grain of a bcc material has been studied using a discrete dislocation technique. The geometry is modelled by distributed dislocation dipole elements and the plasticity by discrete dislocations. The crack is assumed to grow through a single shear mechanism due to nucleation and annihilation of dislocations along preferred slip planes in the material. The change in growth rates due to different load cycles and due to a small single overload was investigated. It was found that the growth rates were strongly influenced by the applied load cycles, and that a single overload affects the growth differently depending on the number of cycles prior to the overload. (c) 2005 Elsevier... (More)
- Quasistatic propagation of a short edge crack, located within one grain of a bcc material has been studied using a discrete dislocation technique. The geometry is modelled by distributed dislocation dipole elements and the plasticity by discrete dislocations. The crack is assumed to grow through a single shear mechanism due to nucleation and annihilation of dislocations along preferred slip planes in the material. The change in growth rates due to different load cycles and due to a small single overload was investigated. It was found that the growth rates were strongly influenced by the applied load cycles, and that a single overload affects the growth differently depending on the number of cycles prior to the overload. (c) 2005 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/407445
- author
- Hansson, Per LU and Melin, Solveig LU
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- overload, single shear, short crack, discrete dislocation, fatigue
- in
- International Journal of Fatigue
- volume
- 28
- issue
- 7
- pages
- 714 - 721
- publisher
- Elsevier
- external identifiers
-
- wos:000237999900004
- scopus:33645967450
- ISSN
- 1879-3452
- DOI
- 10.1016/j.ijfatigue.2005.09.001
- language
- English
- LU publication?
- yes
- id
- 8bd86fa3-2d8a-4478-9b0d-8e3d78c50872 (old id 407445)
- date added to LUP
- 2016-04-01 12:01:09
- date last changed
- 2022-01-26 21:39:32
@article{8bd86fa3-2d8a-4478-9b0d-8e3d78c50872,
abstract = {{Quasistatic propagation of a short edge crack, located within one grain of a bcc material has been studied using a discrete dislocation technique. The geometry is modelled by distributed dislocation dipole elements and the plasticity by discrete dislocations. The crack is assumed to grow through a single shear mechanism due to nucleation and annihilation of dislocations along preferred slip planes in the material. The change in growth rates due to different load cycles and due to a small single overload was investigated. It was found that the growth rates were strongly influenced by the applied load cycles, and that a single overload affects the growth differently depending on the number of cycles prior to the overload. (c) 2005 Elsevier Ltd. All rights reserved.}},
author = {{Hansson, Per and Melin, Solveig}},
issn = {{1879-3452}},
keywords = {{overload; single shear; short crack; discrete dislocation; fatigue}},
language = {{eng}},
number = {{7}},
pages = {{714--721}},
publisher = {{Elsevier}},
series = {{International Journal of Fatigue}},
title = {{Influence of fatigue load range on the growth of a microstructurally short edge crack simulated by a discrete dislocation formulation}},
url = {{http://dx.doi.org/10.1016/j.ijfatigue.2005.09.001}},
doi = {{10.1016/j.ijfatigue.2005.09.001}},
volume = {{28}},
year = {{2006}},
}