Connection between members
AssigneeVestas Wind Systems A/S
InventorsAnton Bech, Frank A. Hoelgaard Hahn
Life of this patent
Estimating the term…
Abstract
A method for preparing a more reliable connection between two members (2, 4) is provided. The method involves the use of a gas-removal layer (6), which allows for gas transport in a number of overall directions in a plane of the gas-removal layer. The gas-removal layer comprises a resin (12) and during consolidation the gas-removal layer is deformed to form a collection substantially free from entrapped gas voids. Furthermore, a gas-removal layer is provided as well as a mould for casting of gas-removal layers and a method for preparing such a mould. The method and the gas-removal layer provided are particularly useful for manufacturing of wind turbine blades and spars for such blades.
Claims30
A method for functionally connecting a first member, comprising first fibres and a first resin, and a second member, comprising second fibres and a second resin, said method comprising the steps of:
- providing said first member;
- providing said second member adjacent to aid first member;
- providing a gas-removal layer in at least a part of an interface between said first member and said second member, said gas-removal layer allowing for gas transport in all overall directions in a plane of said gas-removal layer, said gas-removal layer comprising a third resin, and a gas transportation network is mainly formed by the space between independent three-dimensional volumes of said third resin, wherein the gas-removal layer comprises discrete volumes of the third resin, the volumes of the third resin having dimensions smaller than distances between respective volumes of resin;
- removing gas from said interface between said first member and said second member via said gas-removal layer;
- deforming said gas-removal layer;
- consolidating and/or curing said interface;
- and
- optionally co-consolidating and/or co-curing said first member and/or said second member.
Dependencies are inferred from the claim text.