Systems and methods for thermal washers are described herein. A thermal washer may comprise a first metallic plate having a first inner surface and a first outer surface, a second metallic plate having a second inner surface and a second outer surface, the second metallic plate being oriented substantially parallel to the first metallic plate such that the first inner surface and the second inner surface are separated by a gap, and a thermal wool in contact with the first inner surface and the second inner surface, the thermal wool filling a void between the first inner surface and the second inner surface. A width of the thermal wool may be substantially equal to a width of the first metallic plate and a length of the thermal wool may be substantially equal to a length of the first metallic plate.

A wind turbine is provided, including a hub, a blade shaft which is connected to the hub, a rotor blade which is connected to the blade shaft, a fixed bearing arrangement which is arranged at a blade end) of the blade shaft, and a floating bearing arrangement which is arranged at a hub end of the blade shaft, wherein the bearing arrangements enable a rotational movement of the rotor blade relative to the blade shaft. One advantage of the wind turbine including the bearing arrangements is that a better distribution of the loads is achieved. Further, the serviceability is better compared to bearings with rolling elements.

A wind turbine rotor blade having a blade shell with a generally chordwise layup of fibre plies and a generally spanwise spar cap. A lightning conductor extends over the spar cap, and the spar cap includes conductive material. An equipotential bonding element electrically bonds the lightning conductor to the spar cap. The equipotential bonding element extends between an outboard edge of one stack of the fibre plies and an inboard edge of an adjacent stack of the fibre plies, which overlap to define an overlapping edge region.

Disclosed herein is an electrically conductive sized fiber including a fiber and a sizing composition adhered to a surface of the fiber, wherein the sizing composition includes at least one sizing compound and a plurality of graphene oxide nanoparticles, The present disclosure also discloses fiber-reinforced resin composites, articles including fiber-reinforced resin composites and methods of making such electrically conductive sized fiber and articles therefrom.

Provided is a method for manufacturing segments for a tower, in particular of a wind turbine, and a prestressed segment for a tower. Provided is tower ring for a tower, a tower of the wind turbine, and a wind turbine. In addition, a prestressing device is provided. The method for manufacturing segments for a tower, in particular of a wind turbine, comprises: arranging at least one prestressing element in a mold, wherein the prestressing element comprises or consists of fiber-reinforced plastic; tensioning the prestressing element; embedding the prestressing element in a concrete mass; hardening of the concrete mass into a longitudinal segment, preferably in the form of a complete longitudinal segment of a tower; removing the hardened longitudinal segment from the mold.

The present invention relates to a reinforcing structure, such as a reinforcing structure for reinforcing a wind turbine blade, comprising: a first composite element layer comprising at least two carbon fibre reinforced composite elements; a second composite element layer comprising one or more carbon fibre reinforced composite elements; an interlayer sandwiched at least partly between the first and the second composite element layer, the interlayer comprising an electrically conductive portion and a non-conductive portion surrounding the conductive portion, the conductive portion abutting exactly two of the carbon fibre reinforced composite elements comprised in the first composite element layer. A method for manufacturing such a structure is also provided.

A method of preparing a wind turbine blade, comprising: removing at least a portion of a layer of material covering a region of a metallic part of the wind turbine blade from the wind turbine blade, applying a metal salt to the metallic part, the metal salt being arranged to oxidise a metal of the metallic part, such that the metal salt and the metal of the metallic part react and a new compound is formed on the metallic part.

The present invention relates to an access arrangement (90) of a wind turbine blade for accessing a hollow space within the blade. The access arrangement (90) comprises an access opening (180) provided in the blade shell member, a cover panel (92) for covering the access opening (180), a sealing member (96) arranged between the cover panel (92) and the blade shell member, and one or more fasteners (98) for releasably fastening the cover panel (92) to the blade shell member. The present invention also relates to a wind turbine blade comprising the access arrangement (90).

A wind turbine rotary connection for two wind turbine components which are rotatable relative to each other, having a combined axial-radial bearing, wherein the axial-radial bearing has an axial bearing component and a separate radial bearing component. In particular it is proposed that the axial bearing component is in the form of a plain bearing component having a first convexly curved bearing surface and a corresponding second concavely curved bearing surface.

A wind turbine blade of a wind turbine, the wind turbine blade including a shell and a spar having at least one spar cap is provided. At least one of the at least one spar cap includes at least two longitudinal support structure elements, whereby at least two of the at least two longitudinal support structure elements are arranged adjacent to one another in a longitudinal direction of the wind turbine blade and at least one longitudinal support structure includes carbon fiber-reinforced plastic and at least one other longitudinal support structure includes at least one fiber-reinforced plastic different from carbon fiber-reinforced plastic.