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Accelerating corrosion in a laboratory set-up for corrosion-fatigue of offshore steels

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Abstract
Corrosion-fatigue is a dangerous failure mechanism that is not yet fully understood. Structures subjected to corrosion-fatigue are over conservative in design, which is economically unfavourable. To counter this, representative laboratory experiments simulating the corrosion-fatigue conditions of an offshore structure should be performed. Lab testing is, for obvious reasons, performed at frequencies much higher than these of wave and wind actions. However, this means that corrosion needs to be accelerated in the same manner. In this work two different ways to accelerate corrosion were selected, namely temperature and oxygen content adaptation. S-N curves were determined in different test conditions in order to evaluate the damage evolution. It has been found that high temperatures and high levels of oxygen content will result in earlier failure. The fracture surfaces are somewhat different than fracture surfaces obtained due to fatigue in air. More crack initiation sites can be observed and the fracture surface is generally rougher due to corrosion.
Keywords
fatigue limit, corrosion fatigue, acceleration, S-N curve

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MLA
Depoortere, Michiel, et al. “Accelerating Corrosion in a Laboratory Set-up for Corrosion-Fatigue of Offshore Steels.” SUSTAINABLE CONSTRUCTION AND DESIGN, edited by Stijn Hertelé and Jeroen Van Wittenberghe, vol. 7, Ghent University, Laboratory Soete, 2016.
APA
Depoortere, M., Rogge, O., Micone, N., & De Waele, W. (2016). Accelerating corrosion in a laboratory set-up for corrosion-fatigue of offshore steels. SUSTAINABLE CONSTRUCTION AND DESIGN, 7.
Chicago author-date
Depoortere, Michiel, Olivier Rogge, Nahuel Micone, and Wim De Waele. 2016. “Accelerating Corrosion in a Laboratory Set-up for Corrosion-Fatigue of Offshore Steels.” Edited by Stijn Hertelé and Jeroen Van Wittenberghe. SUSTAINABLE CONSTRUCTION AND DESIGN 7.
Chicago author-date (all authors)
Depoortere, Michiel, Olivier Rogge, Nahuel Micone, and Wim De Waele. 2016. “Accelerating Corrosion in a Laboratory Set-up for Corrosion-Fatigue of Offshore Steels.” Ed by. Stijn Hertelé and Jeroen Van Wittenberghe. SUSTAINABLE CONSTRUCTION AND DESIGN 7.
Vancouver
1.
Depoortere M, Rogge O, Micone N, De Waele W. Accelerating corrosion in a laboratory set-up for corrosion-fatigue of offshore steels. Hertelé S, Van Wittenberghe J, editors. SUSTAINABLE CONSTRUCTION AND DESIGN. 2016;7.
IEEE
[1]
M. Depoortere, O. Rogge, N. Micone, and W. De Waele, “Accelerating corrosion in a laboratory set-up for corrosion-fatigue of offshore steels,” SUSTAINABLE CONSTRUCTION AND DESIGN, vol. 7, 2016.
@article{8125485,
  abstract     = {{Corrosion-fatigue is a dangerous failure mechanism that is not yet fully understood. Structures subjected to corrosion-fatigue are over conservative in design, which is economically unfavourable. To counter this, representative laboratory experiments simulating the corrosion-fatigue conditions of an offshore structure should be performed. Lab testing is, for obvious reasons, performed at frequencies much higher than these of wave and wind actions. However, this means that corrosion needs to be accelerated in the same manner. In this work two different ways to accelerate corrosion were selected, namely temperature and oxygen content adaptation. S-N curves were determined in different test conditions in order to evaluate the damage evolution. It has been found that high temperatures and high levels of oxygen content will result in earlier failure. The fracture surfaces are somewhat different than fracture surfaces obtained due to fatigue in air. More crack initiation sites can be observed and the fracture surface is generally rougher due to corrosion.}},
  author       = {{Depoortere, Michiel and Rogge, Olivier and Micone, Nahuel and De Waele, Wim}},
  editor       = {{Hertelé, Stijn and Van Wittenberghe, Jeroen}},
  issn         = {{2032-7471}},
  journal      = {{SUSTAINABLE CONSTRUCTION AND DESIGN}},
  keywords     = {{fatigue limit,corrosion fatigue,acceleration,S-N curve}},
  language     = {{eng}},
  publisher    = {{Ghent University, Laboratory Soete}},
  title        = {{Accelerating corrosion in a laboratory set-up for corrosion-fatigue of offshore steels}},
  volume       = {{7}},
  year         = {{2016}},
}