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A relative crack opening time correlation for corrosion fatigue crack growth in offshore structures

Adedipe, O. ; Brennan, F. ; Kolios, A.

Fatigue & fracture of engineering materials & structures, 2016-04, Vol.39 (4), p.395-411 [Periódico revisado por pares]

Oxford: Blackwell Publishing Ltd

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  • Título:
    A relative crack opening time correlation for corrosion fatigue crack growth in offshore structures
  • Autor: Adedipe, O. ; Brennan, F. ; Kolios, A.
  • Assuntos: Alloys ; Correlation ; Corrosion ; Corrosion fatigue ; crack growth rate ; crack opening ; Crack propagation ; Fatigue cracks ; Fatigue failure ; Fracture mechanics ; Materials fatigue ; mean stress ; Offshore structures ; stress intensity factor ; Stresses
  • É parte de: Fatigue & fracture of engineering materials & structures, 2016-04, Vol.39 (4), p.395-411
  • Notas: ArticleID:FFE12364
    Petroleum Technology Development Fund
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    istex:EA7BA3FB3504B99B2464AF348EA17076F41D747E
    ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: A considerable amount of research has been carried out on the prediction of mean stress effects on fatigue crack growth in structures. Newer types of structure are now being developed for use in highly dynamic, harsh marine environments, particularly for renewable energy applications. Therefore, the extent to which mean stresses can enhance corrosion‐assisted fatigue damage in these structures needs to be better understood. A new theoretical model that accounts for mean stress effects on corrosion fatigue crack growth is proposed. The model is developed based on the relative crack opening period per fatigue cycle and by considering only the damaging portion of the stress cycle. The baseline data for the modelling exercise are the data obtained at a stress ratio of 0.1 in air and seawater tests conducted on compact tension specimens. The model is validated by comparison with experimental data and with other fatigue crack propagation models. The proposed model correlates fairly well with experimental data and the other models examined.
  • Editor: Oxford: Blackwell Publishing Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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