Offshore Foundations | Advances in Rotor Blades
Wind Turbine Towers | Wind Turbine Bearings

26 - 28 August, 2025 | Dorint City Hotel Bremen, Bremen, Germany

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Sulaiman Shojai

Group Leader for Structural Integrity DLR, Institute of Maritime Energy Systems

Offshore Foundations: Day 2 - 28/08/2025

10:05 Impact of Corrosion on Welded Offshore Steel Joints over Time: Results of the German CorroFAT project

• Analysis of weld geometry change based on 3D-scans of up to 12-month corroded

specimens in accelerated salt spray chamber test.

• 3D-scan reveals: With higher exposure durations, the sharpness of butt welds increases,

while it decreases for fillet welds.

• Reduction of fatigue strength with a single reduction factor according DNV do not cover

the physics.

• Fatigue reduction due to corrosion depends on the initial notch category: Highest fatigue

reduction in base material and lowest for fillet welded joints.

• Long term corrosion leads to an equalization effect: mild notches becoming sharp and

vice versa.

Check out the incredible speaker line-up to see who will be joining Sulaiman.

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