Fatigue life assessment of offshore wind support structures in the presence of corrosion pits

Shamir, Muhammad; Braithwaite, Jarryd; Mehmanparast, Ali

doi:10.1016/j.marstruc.2023.103505

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…So, to predict strains from predicted displacements, the strain-mode shapes should be calculated. The dynamic strain response can be calculated with the strain mode shapes and the modal coordinates using (27).…”

Section: Modal Expansionmentioning

confidence: 99%

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Fatigue Analysis of a Jacket-Supported Offshore Wind Turbine at Block Island Wind Farm

Partovi-Mehr,

DeFrancisci,

Minaeijavid

et al. 2024

Sensors

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Offshore wind-turbine (OWT) support structures are subjected to cyclic dynamic loads with variations in loadings from wind and waves as well as the rotation of blades throughout their lifetime. The magnitude and extent of the cyclic loading can create a fatigue limit state controlling the design of support structures. In this paper, the remaining fatigue life of the support structure for a GE Haliade 6 MW fixed-bottom jacket offshore wind turbine within the Block Island Wind Farm (BIWF) is assessed. The fatigue damage to the tower and the jacket support structure using stress time histories at instrumented and non-instrumented locations are processed. Two validated finite-element models are utilized for assessing the stress cycles. The modal expansion method and a simplified approach using static calculations of the responses are employed to estimate the stress at the non-instrumented locations—known as virtual sensors. It is found that the hotspots at the base of the tower have longer service lives than the jacket. The fatigue damage to the jacket leg joints is less than 20% and 40% of its fatigue capacity during the 25-year design lifetime of the BIWF OWT, using the modal expansion method and the simplified static approach, respectively.

show abstract

Section: Modal Expansionmentioning

confidence: 99%

“…Pitting corrosion is known to significantly reduce the fatigue life of a structure depending on the seawater exposure time [27].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of a Jacket-Supported Offshore Wind Turbine at Block Island Wind Farm

Partovi-Mehr,

DeFrancisci,

Minaeijavid

et al. 2024

Sensors

View full text Add to dashboard Cite

show abstract

Influence of hot-dip galvanization on the fatigue performance of high-strength bolted connections

Milone,

Foti,

Viespoli

et al. 2024

Engineering Structures

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A review of additive manufacturing capabilities for potential application in offshore renewable energy structures

O'Neill,

Mehmanparast

2024

Forces in Mechanics

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Fatigue life assessment of offshore wind support structures in the presence of corrosion pits

Cited by 3 publications

References 26 publications

Fatigue Analysis of a Jacket-Supported Offshore Wind Turbine at Block Island Wind Farm

Fatigue Analysis of a Jacket-Supported Offshore Wind Turbine at Block Island Wind Farm

Influence of hot-dip galvanization on the fatigue performance of high-strength bolted connections

A review of additive manufacturing capabilities for potential application in offshore renewable energy structures

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