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Phase-field modelling of stress corrosion

Ståhle, Per LU and Hansen, Eskil LU (2012) 19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
Abstract

The evolution of surfaces exposed to an aggressive environment and mechanical load is studied. The evolution is the initial part of a stress corrosion process that leads to pitting, crack initiation and growing cracks. In conventional fracture analyses the growth rate of the crack may be computed using a modified Paris' law. However, a known or a postulated crack is required. A serious drawback is that a large part of the lifetime of a crack or a surface flaw is spent during the initiation of the crack. The knowledge of the mechanisms leading from a pit, flaw, scratch, etc. to a crack is very limited. One reason is the complication caused by the less definite defined original geometry. The motivation for the present study is to increase... (More)

The evolution of surfaces exposed to an aggressive environment and mechanical load is studied. The evolution is the initial part of a stress corrosion process that leads to pitting, crack initiation and growing cracks. In conventional fracture analyses the growth rate of the crack may be computed using a modified Paris' law. However, a known or a postulated crack is required. A serious drawback is that a large part of the lifetime of a crack or a surface flaw is spent during the initiation of the crack. The knowledge of the mechanisms leading from a pit, flaw, scratch, etc. to a crack is very limited. One reason is the complication caused by the less definite defined original geometry. The motivation for the present study is to increase the understanding of the transition from stress induced pitting to growing cracks.

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Please use this url to cite or link to this publication:
author
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organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Anti-plane strain, Crack initiation, Phase field model, Pitting, Stress corrosion, Surface morphology
host publication
19th European Conference on Fracture : Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 - Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
publisher
European Conference on Fracture, ECF
conference name
19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
conference location
Kazan, Russian Federation
conference dates
2012-08-26 - 2012-08-31
external identifiers
  • scopus:85127267714
ISBN
9780878493609
978-5-905576-18-8
language
English
LU publication?
yes
id
6cfad3f1-daf1-4be8-b447-52a21281e7ce
date added to LUP
2022-05-01 10:47:44
date last changed
2024-01-12 12:21:59
@inproceedings{6cfad3f1-daf1-4be8-b447-52a21281e7ce,
  abstract     = {{<p>The evolution of surfaces exposed to an aggressive environment and mechanical load is studied. The evolution is the initial part of a stress corrosion process that leads to pitting, crack initiation and growing cracks. In conventional fracture analyses the growth rate of the crack may be computed using a modified Paris' law. However, a known or a postulated crack is required. A serious drawback is that a large part of the lifetime of a crack or a surface flaw is spent during the initiation of the crack. The knowledge of the mechanisms leading from a pit, flaw, scratch, etc. to a crack is very limited. One reason is the complication caused by the less definite defined original geometry. The motivation for the present study is to increase the understanding of the transition from stress induced pitting to growing cracks.</p>}},
  author       = {{Ståhle, Per and Hansen, Eskil}},
  booktitle    = {{19th European Conference on Fracture : Fracture Mechanics for Durability, Reliability and Safety, ECF 2012}},
  isbn         = {{9780878493609}},
  keywords     = {{Anti-plane strain; Crack initiation; Phase field model; Pitting; Stress corrosion; Surface morphology}},
  language     = {{eng}},
  publisher    = {{European Conference on Fracture, ECF}},
  title        = {{Phase-field modelling of stress corrosion}},
  year         = {{2012}},
}