Modeling of the ion transportation within a corrosion fatigue crack

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Abstract

A mathematical model has been developed to characterize mass transport and electrochemical conditions within a corrosion fatigue crack in steel immersed in seawater. The focus is on the concentration of H+ ions, which correlates with the rate of anodic dissolution. The Nernst-Planck equation, governing mass transport in the aqueous environment, is formulated and solved using COMSOL Multiphysics. The model accounts for crack face movements, which pump the corrosive medium in and out, facilitating species advection. This study investigates the effects of crack length and loading ratio, showing that longer cracks and higher R ratios lead to increased H+ concentration.
Original languageEnglish
Title of host publicationProceedings of 2025 Wind Energy Science Conference
Number of pages3
PublisherEuropean Academy of Wind Energy
Publication date2025
Publication statusPublished - 2025
EventWind Energy Science Conference 2025 - La Cité des congrès, Nantes, France
Duration: 24 Jun 202527 Jun 2025
https://wesc2025.eu/

Conference

ConferenceWind Energy Science Conference 2025
LocationLa Cité des congrès
Country/TerritoryFrance
CityNantes
Period24/06/202527/06/2025
Internet address

Keywords

  • Corrosion fatigue
  • Offshore wind turbine
  • S355 steel
  • Crack propagation
  • Ion transportation

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