Investigating the impact of non‐linear geometrical effects on wind turbine blades—Part 1: Current status of design and test methods and future challenges in design optimization

Puri, Amit; Dear, John P.; Branner, Kim; Morris, A.

doi:10.1002/we.415

Cited by 22 publications

(18 citation statements)

References 6 publications

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“…This general trend to more advanced structural design is described elsewhere [11]. In wind turbine blade design, it is important to take into account different nonlinear effects as described in [12]. Failure of a wind turbine blade has small to minor consequence as the risk for human lives is small, especially offshore since persons are not close to the wind turbines.…”

Section: (E) Structural Design Philosophiesmentioning

confidence: 99%

Damage tolerance and structural monitoring for wind turbine blades

McGugan

Pereira

Sørensen

et al. 2015

Phil. Trans. R. Soc. A.

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The paper proposes a methodology for reliable design and maintenance of wind turbine rotor blades using a condition monitoring approach and a damage tolerance index coupling the material and structure. By improving the understanding of material properties that control damage propagation it will be possible to combine damage tolerant structural design, monitoring systems, inspection techniques and modelling to manage the life cycle of the structures. This will allow an efficient operation of the wind turbine in terms of load alleviation, limited maintenance and repair leading to a more effective exploitation of offshore wind.

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Section: (E) Structural Design Philosophiesmentioning

confidence: 99%

Damage tolerance and structural monitoring for wind turbine blades

McGugan

Pereira

Sørensen

et al. 2015

Phil. Trans. R. Soc. A.

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“…An additional transverse loading due to the geometrically nonlinear Brazier effect [12,13] is not taken into account by all three analysis tools.…”

Section: Analysis Toolsmentioning

confidence: 99%

A concept study of a carbon spar cap design for a 80m wind turbine blade

Rosemeier

Bätge

2014

J. Phys.: Conf. Ser.

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Abstract. The buckling resistance is a key design driver for large wind turbine blades with a significant influence on the material costs. During the structural design process the choice was made for carbon spar caps and two shear webs, which were set relatively far apart in order to stabilize the panels. This design presented a major challenge for the stability of the spar caps. The topology of these spar caps has been modified with regard to stability, comparing a continuous spar cap with split spar cap concepts and considering both lay-ups with hybrid carbon glass spar caps or sandwich concepts. Within those concepts, parametric studies were conducted varying different geometrical parameters of the spar caps and its layups. In order to determine the buckling resistance of the spar cap, an analytical model considering a 2D cross section discretized blade model was utilized to select the basic concept, after which a 3D numerical finite element model taking the whole blade into account was used to evaluate the chosen design concepts. The stability limit state analysis was conducted according to the certification scheme of GL guideline 2012. The various concepts were evaluated based on the blade's mass, tip deflection and modal properties. The results of this design process of the spar caps and the evaluation of the used analysis tools are presented within the paper.

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“…These two shells are bonded using adhesive and creating the leading and trailing edges. This airfoil‐shaped blade is stiffened by spars or webs from balsa wood, foam, or combinations of both . Moreover, a root joint connects the blade to the rotor.…”

Section: Introductionmentioning

confidence: 99%

Prospective challenges in the experimentation of the rain erosion on the leading edge of wind turbine blades

Bartolomé

Teuwen

2018

Wind Energy

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Developments in the wind industry reveal intricate engineering challenges, one of them being the erosion on the leading edge of the wind turbine blades. In this review work, the main issues for the wind industry in the experimentation with respect to erosion are examined. After a historical and general overview of erosion, this review focuses on the rain erosion on the leading edge of the wind turbine blades giving prominence to (1) the rain simulations, (2) experimental erosion facilities, and (3) variables to characterise erosion. These three factors have to be improved to establish a research field enabling the prediction of erosion behaviour and providing useful information about how the rainfall affects the leading edge of the wind turbine blades. Moreover, these improvements in the experimentation of the erosion would be a first step to understand and predict the erosion damage of the wind turbine blades. Finally, this review work also will help to cope with experimental investigations and results in the rain erosion on the leading edge with a deeper critical thinking for future researchers.

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Investigating the impact of non‐linear geometrical effects on wind turbine blades—Part 1: Current status of design and test methods and future challenges in design optimization

Cited by 22 publications

References 6 publications

Damage tolerance and structural monitoring for wind turbine blades

Damage tolerance and structural monitoring for wind turbine blades

A concept study of a carbon spar cap design for a 80m wind turbine blade

Prospective challenges in the experimentation of the rain erosion on the leading edge of wind turbine blades

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