METHOD OF PRODUCING A COMPOSITE SHELL STRUCTURE

• Main Author: FREDERIKSEN, HENRIK
• Format: Patent
• Language: English; French
• Published: 30.06.2011
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MAKING GRANULES OR PREFORMS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PRODUCING MECHANICAL POWER; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A method of producing a composite shell structure in form of a wind turbine blade shell part comprising a reinforced fibre material embedded in a cured resin and comprising the following steps: providing a mould part (10) having a mould part moulding surface (11) with a contour defining the outer surface of the composite shell structure; providing a perform forming part (12) having a preform forming surface (13) being shaped complementary to the mould part moulding surface (11); forming a preform (14) comprising dry fibre material on the preform forming surface (13); bringing the mould part (10) and the preform forming part (12) together to an assembled position so that the mould part moulding surface (11) faces the preform forming surface (13) transferring the preform (14) to the mould part (10) by releasing the preform (14) from the preform forming surface (13) so that it is received on the moulding surface (11) removing the preform forming part (12) from the mould part (10) forming a mould cavity by means of a second mould part arranged on the preform (14) providing resin in the mould cavity, and curing and/or allowing the resin to cure. Procédé de fabrication d'une structure en coque composite, en l'occurrence une coque pour pale d'éolienne, comprenant un matériau en fibres renforcées intégré à une résine durcie. Le procédé comprend les opérations suivantes : utilisation d'une pièce de moule (10) présentant une surface de moulage (11) dont le contour définit la surface extérieure de la structure en coque; utilisation d'une pièce de formage de préforme (12) dont la surface de formage (13) présente une forme complémentaire de la surface de la pièce de moule (11); réalisation d'une préforme (14) comprenant le matériau en fibres durcies sur sa surface de formage (13); réunion des pièces (10) et (12) en position d'assemblage de sorte que la surface de moulage (11) se trouve en face de la surface de formage de préforme (13); transfert de la préforme (14) sur la pièce de moule (10) en séparant la préforme (14) de la surface de formage de la préforme (13) de sorte qu'elle trouve sa place sur la pièce de moule (10); formation d'une cavité de moulage au moyen d'une seconde pièce de moule disposée sur la préforme (14); introduction de résine dans la cavité de moulage; et durcissement ou prise naturelle de la résine.