A method for manufacturing a striking plate of a golf club head includes the steps of: a sewing step, in which at least one roving material is sewn onto a base material so as to form a laminate blank with an uneven thickness in a normal direction of the base material; and a forming step, in which the laminate blank is placed in a mold cavity of a mold and is formed into the striking plate with an uneven thickness.

Among other things, the present disclosure relates to a wind turbine rotor blade that can be assembled at the site of its wind turbine. The blade includes an internal structure which may be pre-fabricated with connections to the shell skin prior to being transported to the site of its wind turbine. A filler material may be injected into the layers of fabric making up the shell skin at the wind turbine site and allowed to harden at approximately atmospheric conditions.

Apparatus and methods for manufacturing and repairing fibre-reinforced composite materials are disclosed. In various embodiments, the apparatus and methods disclosed herein use a resin retaining/releasing device comprising resin having a viscosity that is temperature dependent for infusion into a region of a part. The resin retaining/releasing device may include a first sheet and an opposite second sheet at least partially enclosing the quantity of resin. The first sheet and the second sheet may be gas-permeable. The second sheet may be substantially resin-impermeable when the viscosity of the resin is above a threshold viscosity and resin-permeable when the viscosity of the resin is below the threshold viscosity.

A method of fabricating a part out of composite material, includes forming a fiber texture from refractory fibers; placing the texture in a mold having an impregnation chamber including in its bottom portion a part made of porous material, the impregnation chamber being closed in its top portion by a deformable impermeable diaphragm separating the impregnation chamber from a compacting chamber; injecting a slip containing a powder of refractory particles into the impregnation chamber; injecting a compression fluid into the compacting chamber, to force the slip to pass through the texture; draining the liquid of the slip via the porous material part, while retaining the powder of refractory particles inside the texture so as to obtain a fiber preform filled with refractory particles; drying the fiber preform; unmolding the preform; and sintering the refractory particles present in the preform in order to form a refractory matrix in the preform.

A method and system for fabricating a composite structure is disclosed. A composite preform (10) has an upper surface (14) and an opposing lower surface (15). The upper and lower surfaces (14, 15) each define a preform major surface. A heat sink (120) is located in proximity to one of the preform major surfaces so as to extend across only a portion (16) of the composite preform (10). A resin is cured in the composite preform (10) to form the composite structure. The resin cures exothermically. During curing of the resin, heat is conducted away from the portion (16) of the composite preform (10) into the heat sink (120).

A method of moulding includes placing reinforcing fibre between a mould surface and a flexible diaphragm, and causing upward movement of the diaphragm to produce a resin flow channel along which resin is caused to flow.

A method of manufacturing a composite connector for a fluid transfer conduit is provided which comprises applying continuous fibre reinforcement, oriented at least partially circumferentially and pre-impregnated with a thermoplastic polymer to a tubular mould portion which extends substantially parallel to a central axis C; applying at least one further mould portion to form a complete mould in which the continuous fibre reinforcement is enclosed and injecting a thermoplastic polymer into the mould to form a connector with a tubular hub portion and a flange portion which extends from the hub portion at an angle to the central axis C. The tubular hub portion comprises a tubular seal section with an inner layer and an outer wherein the inner layer comprises the continuous fibre reinforcement and the outer layer comprises the injected thermoplastic polymer.

The present application provides agents for producing an impact-modified epoxy adhesive encompassing at least two components A and B packaged separately from each other, wherein (a) component A contains at least one compound having two or more isocyanate groups together with one or more further additives, (b) component B contains at least one compound which has at least two reactive groups selected from hydroxyl groups, thiol groups, primary amino groups and secondary amino groups and is simultaneously free from epoxy groups, together with one or more further additives, (c) at least one of components A and/or B contains at least one epoxide prepolymer as an additive, (d) at least one of components A and/or B contains at least one latent hardener for epoxide prepolymers as an additive, and (e) components A and B contain no blowing agent that is capable of being heat activated.

A method of manufacturing a wind turbine blade, comprising the steps of: placing one or more shell fibre layers on a mould surface of a blade mould, placing a plurality of separately provided preforms directly on the one or more shell fibre layers in a stacked arrangement, infusing and curing the stacked preform arrangement, the one or more shell fibre layers together via a resin in mould cavity of the blade mould to form a wind turbine blade part with a spar cap integrated in a shell part providing part of the aerodynamic shape of the wind turbine blade.

Resin infusing a composite preform includes locating the preform on an upper tool surface having a resin reservoir element on a downstream side of the composite preform. A vacuum bagging film is placed over the tool surface to cover the composite preform and the resin reservoir element, and is sealed relative to the tool surface to define a sealed resin infusion chamber. A resin supply is provided along with a resin flow path from the resin supply to the resin infusion chamber on an upstream side of the composite preform, through the composite preform and through the reservoir inlet to the resin reservoir. At least partial vacuum pressure applied to the reservoir outlet establishes a pressure differential between the resin supply and reservoir outlet to drive resin from the resin supply through the resin flow path, infusing the composite preform with resin and collecting excess resin in the resin reservoir.