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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Analysis of Fatigue and Corrosion in Subsea Pipelines

Analysis of Fatigue and Corrosion in Subsea Pipelines

Piovesana, Gustavo Ribeiro
G. Filho, Flavio F.
Pereira Do Nascimento, Marcelino

Paperback

Technology & Engineering

ISBN10: 6208787521
ISBN13: 9786208787523
Publisher: Our Knowledge Publishing
Published: Mar 29 2025
Pages: 68
Weight: 0.23
Height: 0.16 Width: 6.00 Depth: 9.00
Language: English
This work evaluates the resistance of oil prospecting pipes to fatigue stresses generated by vortex-induced vibrations (VIV's) on the high seas, associated with wear caused by corrosion, a phenomenon that is aggravated in this environment. The study was based on the Stress x Number of Cycles curve of specimens with and without corrosion, taken from an API 5CT T95 pipe (1% Cr). The fatigue tests were carried out in the laboratory and the forced corrosion took place in a salt-spray chamber. To complement the results obtained in the fatigue test, microhardness, surface roughness, mass loss assessment, scanning electron microscopy and optical microscopy were also carried out. The corroded specimens showed an increase in roughness and a reduction in fatigue life compared to the uncorroded specimens, especially at higher stresses. The microhardness and microscopy tests showed anisotropy between the transverse and longitudinal directions of the tube. VIV's generate stresses of up to 250 MPa and the tests showed that for stresses below 350 MPa there should be no fatigue failure, which indicates that the pipe in question is suitable for offshore applications.

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