A phase field model for hydrogen-assisted fatigue
File(s)
Accepted version
Author(s)
Golahmar, Alireza
Kristensen, Philip K
Niordson, Christian F
Martínez-Pañeda, Emilio
Type
Journal Article
Abstract
We present a new theoretical and numerical phase field-based formulation for predicting hydrogen-assisted fatigue. The coupled deformation-diffusion-damage model presented enables predicting fatigue crack nucleation and growth for arbitrary loading patterns and specimen geometries. The role of hydrogen in increasing fatigue crack growth rates and decreasing the number of cycles to failure is investigated. Our numerical experiments enable mapping the three loading frequency regimes and naturally recover Paris law behaviour for various hydrogen concentrations. In addition, Virtual S–N curves are obtained for both notched and smooth samples, exhibiting a good agreement with experiments.
Date Issued
2022-01-01
Date Acceptance
2021-08-30
Citation
International Journal of Fatigue, 2022, 154
ISSN
0142-1123
Publisher
Elsevier BV
Journal / Book Title
International Journal of Fatigue
Volume
154
Copyright Statement
© 2021 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://www.sciencedirect.com/science/article/pii/S0142112321003765
Grant Number
EP/V009680/1
Subjects
cs.CE
cs.CE
cond-mat.mtrl-sci
physics.chem-ph
Mechanical Engineering & Transports
0905 Civil Engineering
0913 Mechanical Engineering
Publication Status
Published
Article Number
ARTN 106521
Date Publish Online
2021-09-06