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A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures

Abstract

Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the accelerated material damage must be implemented into the model describing crack initiation and growth. The present study presents a review of coupled diffusion and cohesive zone modelling as a method for numerically assessing hydrogen embrittlement of a steel structure. While the model is able to reproduce single experimental results by appropriate fitting of the cohesive parameters, there appears to be limitations in transferring these results to other hydrogen systems. Agreement may be improved by appropriately identifying the required input parameters for the particular system under study.
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Category

Academic literature review

Language

English

Author(s)

Affiliation

  • SINTEF Industry
  • Norwegian University of Science and Technology

Year

2017

Published in

International Journal of Hydrogen Energy

ISSN

0360-3199

Volume

42

Issue

16

Page(s)

11980 - 11995

View this publication at Norwegian Research Information Repository