Fatigue reliability analysis of the jacket support structure for offshore wind turbine considering the effect of corrosion and inspection

Dong, Wenbin; Moan, Torgeir; Gao, Zhen

doi:10.1016/j.ress.2012.06.011

Cited by 160 publications

(83 citation statements)

References 19 publications

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“…Fatigue reliability analysis of jacket-type offshore wind turbine considering inspection and repair is also considered in Dong et al [18] and Rangel-Ramírez and Sørensen [19].…”

Section: Reliability-based Inspection Planningmentioning

confidence: 99%

Fatigue Reliability and Calibration of Fatigue Design Factors for Offshore Wind Turbines

Márquez-Domínguez

Sørensen

2012

Energies

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Consequences of failure of offshore wind turbines (OWTs) is in general lower than consequences of failure of, e.g., oil & gas platforms. It is reasonable that lower fatigue design factors can be applied for fatigue design of OWTs when compared to other fixed offshore structures. Calibration of appropriate partial safety factors/Fatigue Design Factors (FDF) for steel substructures for OWTs is the scope of this paper. A reliability-based approach is used and a probabilistic model has been developed, where design and limit state equations are established for fatigue failure. The strength and load uncertainties are described by stochastic variables. SN and fracture mechanics approaches are considered for to model the fatigue life. Further, both linear and bi-linear SN-curves are formulated and various approximations are investigated. The acceptable reliability level for fatigue failure of OWTs is discussed and results are presented for calibrated optimal fatigue design factors. Further, the influence of inspections is considered in order to extend and maintain a given target safety level.

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“…Fatigue reliability analysis of jacket-type offshore wind turbine considering inspection and repair is also considered in Dong et al [18] and Rangel-Ramírez and Sørensen [19].…”

Section: Reliability-based Inspection Planningmentioning

confidence: 99%

Fatigue Reliability and Calibration of Fatigue Design Factors for Offshore Wind Turbines

Márquez-Domínguez

Sørensen

2012

Energies

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“…Fatigue damage begins with cracks that initiate in structural elements, and may continue with their growth and with initiation of other cracks [23,24]. Fatigue strength is commonly described by SN-curves that have been obtained by laboratory experiments.…”

Section: Fatiguementioning

confidence: 99%

<strong>Safety Assessment of an Aging Offshore Jacket Platform by Integrating Analytic Hierarchy Process and Grey Clustering Method</strong>

Bao

2016

Preprint

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It is a significant task to assess the safety of the aging offshore jacket platform in order to extend the service life. This paper analyzes the multiple risk factors of an aging jacket platform in Bohai Bay, China and builds the safety evaluation index system, which includes three levels, namely, the target layer, the first-grade indicators layer and the second-grade indicators layer. The target layer consists of three first-grade indicators: ocean environments, structure status, and human and organizational factors. Each first-grade indicator is divided into three second-grade indicators. The weight of each indicator is calculated by analytic hierarchy process to weaken subjective effect. Grey clustering method is applied to estimate the failure risk of the platform in Bohai Bay qualitatively and quantitatively. The assessment standard is divided into five grades and the whitening function of each grey cluster is determined by the assessment scheme. The grey evaluation weight vector of each second-grade indicator is calculated by the table dispatching method. Through layer by layer calculation, the grey assessment value of the target layer is finally estimated by making the grey assessment weight vector single-value and the grey grade is determined according to the maximum principle. The evaluation results show quantitatively that the failure risk grade of the jacket platform in Bohai Bay is medium and the safety assessment method is reasonable and feasible.

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“…Gao and Moan [9] performed long-term fatigue analysis of offshore fixed wind turbines using time domain simulations. Dong et al [10] performed long-term fatigue analysis of multi-planar tubular joints for jacket-type offshore wind turbines using time domain simulations. Peeters et al [11,12], Xing et al [13] performed a detailed analysis of internal drive train dynamics in a wind turbine using multi-body simulations.…”

Section: Open Accessmentioning

confidence: 99%

Ecomoulding of Composite Wind Turbine Blades Using Green Manufacturing RTM Process

2014

Wind Turbine Technology

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Abstract:The gearbox is one of the most expensive components of the wind turbine system. In order to refine the design and hence increase the long-term reliability, there has been increasing interest in utilizing time domain simulations in the prediction of gearbox design loads. In this study, three problems in time domain based gear contact fatigue analysis under dynamic conditions are discussed: (1) the torque reversal problem under low wind speed conditions, (2) statistical uncertainty effects due to time domain simulations and (3) simplified long term contact fatigue analysis of the gear tooth under dynamic conditions. Several recommendations to deal with these issues are proposed based on analyses of the National Renewable Energy Laboratory's 750 kW land-based Gearbox Reliability Collaborative wind turbine.

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Fatigue reliability analysis of the jacket support structure for offshore wind turbine considering the effect of corrosion and inspection

Cited by 160 publications

References 19 publications

Fatigue Reliability and Calibration of Fatigue Design Factors for Offshore Wind Turbines

Fatigue Reliability and Calibration of Fatigue Design Factors for Offshore Wind Turbines

<strong>Safety Assessment of an Aging Offshore Jacket Platform by Integrating Analytic Hierarchy Process and Grey Clustering Method</strong>

Ecomoulding of Composite Wind Turbine Blades Using Green Manufacturing RTM Process

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