Method of manufacturing wind turbine blades comprising composite materials
AssigneeSiemens Aktiengesellschaft
InventorHenrik Stiesdal
Life of this patent
Estimating the term…
Abstract
Method of manufacturing wind turbine blades having composite materials is provided that includes selecting an outer mould part, selecting an inner mould part, wherein at least a part of the surface of the inner mould part comprises a compressible layer being covered by an airtight membrane, positioning the composite materials in a mould cavity between the outer mould part and the inner mould part, evacuating the mould cavity, and bonding the composite materials, evacuating the compressible layer before positioning the composite materials.
Claims9
A method of manufacturing a wind turbine blade comprising composite materials, comprising:
- selecting an outer mould part;
- selecting an inner mould part, wherein at least a substantial part of the surface of the inner mould part comprises a compressible layer being covered by an airtight membrane;
- evacuating the compressible layer, thus causing the compressible layer to become compressed;
- positioning, after the evacuating, materials to be bonded in a mould cavity between the outer mould part and the inner mould part;
- wherein after positioning, the outer mould part encloses the inner mold part;
- evacuating the mould cavity;
- and
- bonding the materials;
- wherein the inner mould part is selected such that a force of expansion of the compressible layer provides sufficient pressure for the bonding;
- and wherein the inner mould part is selected such that it exceeds the hollow space provided by the outer mould part when the compressible layer is not compressed.
Dependencies are inferred from the claim text.