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A hybrid corrosion-structural model for simulating realistic corrosion topography of maritime structures

A hybrid corrosion-structural model for simulating realistic corrosion topography of maritime structures
A hybrid corrosion-structural model for simulating realistic corrosion topography of maritime structures
A multiscale multiphysics model has been developed coupling nonlinear structural behaviour and the corrosion kinetics. This study develops a hybrid mechano-electrochemical corrosion model using finite element method to evaluate long-term topography evolution on carbon steel stiffened plates for marine applications. A parametric study is performed on a stiffened plate (1.5 m 0.95 m) with different localised corrosion locations (0.75 m 0.045 m) at different load levels. Stress-based anodic and cathodic surfaces are defined using a level-set function to solve the transport equation, facilitated by the moving boundary technique. Key model insights show broad-pitted corrosion features with benching, closely resembling those found in actual ship inspections and/or surveys.

carbon steels, finite element, marine corrosion, multiphysics, stiffened plates
0263-8231
Ilman, Eko Charnius
b0bf0c91-81e4-4314-9de0-f1efe5a92c9d
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Sobey, Adam
e850606f-aa79-4c99-8682-2cfffda3cd28
Ilman, Eko Charnius
b0bf0c91-81e4-4314-9de0-f1efe5a92c9d
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Sobey, Adam
e850606f-aa79-4c99-8682-2cfffda3cd28

Ilman, Eko Charnius, Wang, Yikun, Wharton, Julian and Sobey, Adam (2021) A hybrid corrosion-structural model for simulating realistic corrosion topography of maritime structures. Thin-Walled Structures, 169, [108481]. (doi:10.1016/j.tws.2021.108481).

Record type: Article

Abstract

A multiscale multiphysics model has been developed coupling nonlinear structural behaviour and the corrosion kinetics. This study develops a hybrid mechano-electrochemical corrosion model using finite element method to evaluate long-term topography evolution on carbon steel stiffened plates for marine applications. A parametric study is performed on a stiffened plate (1.5 m 0.95 m) with different localised corrosion locations (0.75 m 0.045 m) at different load levels. Stress-based anodic and cathodic surfaces are defined using a level-set function to solve the transport equation, facilitated by the moving boundary technique. Key model insights show broad-pitted corrosion features with benching, closely resembling those found in actual ship inspections and/or surveys.

Text
Revised manuscript - Ilman et al - clean version - Accepted Manuscript
Restricted to Repository staff only until 9 October 2022.
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More information

Accepted/In Press date: 20 September 2021
e-pub ahead of print date: 9 October 2021
Keywords: carbon steels, finite element, marine corrosion, multiphysics, stiffened plates

Identifiers

Local EPrints ID: 451795
URI: http://eprints.soton.ac.uk/id/eprint/451795
ISSN: 0263-8231
PURE UUID: 4cda7889-ea06-43ef-bacb-ba0e8bdf0a29
ORCID for Eko Charnius Ilman: ORCID iD orcid.org/0000-0002-9011-7733
ORCID for Yikun Wang: ORCID iD orcid.org/0000-0001-5619-7795
ORCID for Julian Wharton: ORCID iD orcid.org/0000-0002-3439-017X
ORCID for Adam Sobey: ORCID iD orcid.org/0000-0001-6880-8338

Catalogue record

Date deposited: 27 Oct 2021 16:33
Last modified: 28 Apr 2022 02:09

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Contributors

Author: Yikun Wang ORCID iD
Author: Julian Wharton ORCID iD
Author: Adam Sobey ORCID iD

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