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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Waele, Wim De
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Neural network based fatigue lifetime prediction of metals subjected to block loadingcitations
- 2023Stress intensity factor calculation for short cracks initiating from a semi-ellipsoidal pit
- 2023Quantitative analysis of the correlation between geometric parameters of pits and stress concentration factors for a plate subject to uniaxial tensile stresscitations
- 2023Investigation of the effect of pitting corrosion on the fatigue strength degradation of structural steel using a short crack modelcitations
- 2023Smart S-N curve for fatigue lifetime predictions of offshore wind turbine support structures affected by corrosion
- 2023Evaluation of the corrosion pit growth rate in structural steel S355 by phase-field modelling
- 2023Durability of an adhesively bonded joint between steel ship hull and sandwich superstructure pre-exposed to saline environment
- 2022Numerical study on the effect of pitting corrosion on the fatigue strength degradation of offshore wind turbine substructures using a short crack model
- 2022A numerical investigation on the pitting corrosion in offshore wind turbine substructures
- 2022Calibration and validation of extended back-face strain compliance for a wide range of crack lengths in SENB-4P specimenscitations
- 2022Effects of fixture configurations and weld strength mismatch on J-integral calculation procedure for SE(B) specimenscitations
- 2022Development and evaluation of the ultrasonic welding process for copper-aluminium dissimilar weldingcitations
- 2022Fatigue strength degradation of structural steel in sea environment due to pitting corrosion
- 2022Pitting corrosion and its transition to crack in offshore wind turbine supporting structures
- 2022Pitting Corrosion and Its Transition to Crack in Offshore Wind Turbine Supporting Structures
- 2022Test methods for corrosion-fatigue of offshore structures
- 2021Experimental and numerical study of a piezoelectric diaphragm, a smart sensor for electromechanical impedance-based structural health monitoring
- 2021Electrical admittance of a circular piezoelectric transducer and chargeless deformation effectcitations
- 2021An interdisciplinary framework to predict premature roller element bearing failures in wind turbine gearboxescitations
- 2021Fully-coupled continuum damage model for simulation of plasticity dominated hydrogen embrittlement mechanismscitations
- 2020Calibrating a ductile damage model for two pipeline steels : method and challengescitations
- 2020Evaluation of fatigue crack propagation in steel ESET specimens subjected to variable load spectracitations
- 2020Fatigue crack growth model incorporating surface waviness for Wire+Arc additively manufactured componentscitations
- 2020A comprehensive study on the microstructure and mechanical properties of arc girth welded joints of spiral welded high strength API X70 steel pipecitations
- 2019Enabling qualification of hybrid structures for lightweight and safe maritime transport
- 2019Fatigue crack propagation in HSLA steel specimens subjected to unordered and ordered load spectra
- 2019Crack tip constraint analysis in welded joints with pronounced strength and toughness heterogeneitycitations
- 2019Weldability of high-strength aluminium alloy EN AW-7475-T761 sheets for aerospace applications, using refill friction stir spot weldingcitations
- 2019Assessment of ultra-high cycle fatigue behavior of EN-GJL-250 cast iron using ultrasonic fatigue testing machine
- 2017Metallographic evaluation of the weldability of high strength aluminium alloys using friction spot welding
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document
Evaluation of the corrosion pit growth rate in structural steel S355 by phase-field modelling
Abstract
Steel support structures for offshore wind turbines operate in a harsh chloride-containing marine environment, which can lead to surface degradation due to the formation of corrosion pits. Depending on, amongst others, the applied potential, the corrosion kinetics can either be in activation-, migration- or diffusion-controlled regime. The main aim of this work, which is part of the MAXWind project, is to identify the potential values corresponding to each of these regimes for structural steel S355 in an environment representative of the North Sea. Hereto, the PRISMS-PF open-source phase-field modelling framework is used. Potentiodynamic polarization tests are performed for the electrochemical characterization of this material in artificial seawater. The corrosion potential and current density values obtained are -693 mV vs. Ag/AgCl and 0.005813 mA/〖cm〗^2, respectively. Open circuit potential (OCP) measurements revealed a similar result for the corrosion potential, i.e. -670 mV vs. Ag/AgCl. Besides, the effect of the applied potential on geometrical parameters (pit width and depth) and electrochemical parameters associated with the pit growth rate is studied. For an applied potential of -600 mV (vs. Ag/AgCl) and lower, the corrosion process stays in the activation-controlled regime throughout the simulation time (1000s) and a pit will thus not change in size. Applied potentials of -550 to -400 mV (vs. Ag/AgCl) take the system to the migration-controlled regime, and above -350 mV (vs. Ag/AgCl) the system is in the diffusion-controlled regime. The higher the applied potential (towards zero), the more pitting corrosion is accelerated until it reaches a threshold where any additional increase in applied potential will not further change the pit growth rate. Numerical results are validated with experimental observations of pit depth and width on corroded specimens under temperature-controlled conditions throughout a potentiostat test. Simulating the autonomous growth of a pit for long-term exposure using the phase-field technique is computationally expensive. Based on the preliminary results of this work, it can be assumed that the normal velocity of the pit surface will remain constant in the long term because the applied potential in the real application is lower than -600 mV (vs. Ag/AgCl), negligibly small being close to corrosion potential (no external source of current). A more simple model of pit growth can therefore be used for long-term exposure. The authors acknowledge the financial support of the Belgian Federal Government through its Energy Transition Fund.