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Mechano-electrochemical modelling of corroded steel structures

Mechano-electrochemical modelling of corroded steel structures
Mechano-electrochemical modelling of corroded steel structures
A numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage.
0141-0296
1-14
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ajit
a37b4e0a-06f1-425f-966d-71e6fa299960

Wang, Yikun, Wharton, Julian and Shenoi, Ajit (2016) Mechano-electrochemical modelling of corroded steel structures. Engineering Structures, 128, 1-14. (doi:10.1016/j.engstruct.2016.09.015).

Record type: Article

Abstract

A numerical methodology is established to study the mechano-electrochemical performance of corroded steel structures under external and internal stresses. Results show that mechanical stimuli (elastic/plastic deformation) increase the local anodic current density, and thus the corrosion behavior dynamically responds to the loading conditions. The current density increment for a multi-component stress system is largely dependent on both hydrostatic pressure and equivalent plastic strain. Moreover, the mechano-electrochemical corrosion is more affected by plastic deformation, resulting in localized areas being more anodic. Existing corrosion introduces extra stress/strain concentration, which further reduces the structural strength capacity and intensifies the corrosion damage.

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ENGSTRUCT-D-16-00354R1_accepted.pdf - Accepted Manuscript
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More information

Submitted date: 25 February 2016
Accepted/In Press date: 12 September 2016
e-pub ahead of print date: 22 September 2016
Published date: 1 December 2016
Organisations: Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 400769
URI: http://eprints.soton.ac.uk/id/eprint/400769
ISSN: 0141-0296
PURE UUID: a24ee680-38a2-459c-ab9e-ce54d015c7bb
ORCID for Yikun Wang: ORCID iD orcid.org/0000-0001-5619-7795
ORCID for Julian Wharton: ORCID iD orcid.org/0000-0002-3439-017X

Catalogue record

Date deposited: 27 Sep 2016 09:10
Last modified: 07 Oct 2020 05:28

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