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Corrosion prognosis: maritime structural performances in service environments

Corrosion prognosis: maritime structural performances in service environments
Corrosion prognosis: maritime structural performances in service environments
For marine platforms, assessing the structural resilience in a corroded condition is vital for both design and maintenance practices. With the development of computational and experimental methods for structural analysis, the accuracy of the structural response prediction relies on a better understanding of the material degradation process. However, a realistic estimate of corrosion is inherently a complex undertaking. Corrosion of even a single form can often involve multiple stages, each of which has different steps across several geometric scales; corrosion systems are often multi-layered and involve geometric complexities; the mechanical factors (stress/strain distributions) could affect the corrosion initiation and kinetics. These complexities have resulted in scientific barriers to the advancement of a corrosion prognosis that forecasts damage accumulation, as well as a computational realization of the corrosion-structural analysis. This paper reviews the numerical and experimental work that the authors have done, including the development of nonlinear finite element models to assess the behavior of damaged steel ship structures, full-field experimental validation, application of the mechano-electrochemical theory and in situ tensile-corrosion tests. It is intended that the outcome of this research will be the establishment of a systematic multi-scale multi-physics experimental and numerical protocol for predicting aged structural resilience.
ASME
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ramanand
a37b4e0a-06f1-425f-966d-71e6fa299960
Wang, Yikun
2729f2f1-36d7-4daa-8589-b61fcc99a313
Downes, Jonathan
ebc0f09b-9d33-4815-bedf-bc77df59c822
Wharton, Julian
965a38fd-d2bc-4a19-a08c-2d4e036aa96b
Shenoi, Ramanand
a37b4e0a-06f1-425f-966d-71e6fa299960

Wang, Yikun, Downes, Jonathan, Wharton, Julian and Shenoi, Ramanand (2017) Corrosion prognosis: maritime structural performances in service environments. In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering: Volume 9: Offshore Geotechnics; Torgeir Moan Honoring Symposium. ASME. 7 pp . (doi:10.1115/OMAE2017-62425).

Record type: Conference or Workshop Item (Paper)

Abstract

For marine platforms, assessing the structural resilience in a corroded condition is vital for both design and maintenance practices. With the development of computational and experimental methods for structural analysis, the accuracy of the structural response prediction relies on a better understanding of the material degradation process. However, a realistic estimate of corrosion is inherently a complex undertaking. Corrosion of even a single form can often involve multiple stages, each of which has different steps across several geometric scales; corrosion systems are often multi-layered and involve geometric complexities; the mechanical factors (stress/strain distributions) could affect the corrosion initiation and kinetics. These complexities have resulted in scientific barriers to the advancement of a corrosion prognosis that forecasts damage accumulation, as well as a computational realization of the corrosion-structural analysis. This paper reviews the numerical and experimental work that the authors have done, including the development of nonlinear finite element models to assess the behavior of damaged steel ship structures, full-field experimental validation, application of the mechano-electrochemical theory and in situ tensile-corrosion tests. It is intended that the outcome of this research will be the establishment of a systematic multi-scale multi-physics experimental and numerical protocol for predicting aged structural resilience.

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Accepted/In Press date: 11 February 2017
Published date: 25 June 2017
Venue - Dates: 36th International Conference on Ocean, Offshore & Arctic Engineering, , Trondheim, Norway, 2017-06-25 - 2017-06-30
Organisations: Civil Maritime & Env. Eng & Sci Unit, nCATS Group, Fluid Structure Interactions Group

Identifiers

Local EPrints ID: 410885
URI: http://eprints.soton.ac.uk/id/eprint/410885
PURE UUID: fdeea5b7-78a9-4faf-ad96-0975c78db444
ORCID for Yikun Wang: ORCID iD orcid.org/0000-0001-5619-7795
ORCID for Jonathan Downes: ORCID iD orcid.org/0000-0003-2027-4474
ORCID for Julian Wharton: ORCID iD orcid.org/0000-0002-3439-017X

Catalogue record

Date deposited: 09 Jun 2017 09:48
Last modified: 09 Jan 2022 03:46

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Contributors

Author: Yikun Wang ORCID iD
Author: Jonathan Downes ORCID iD
Author: Julian Wharton ORCID iD
Author: Ramanand Shenoi

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