Attachment methods for surface features of wind turbine rotor blades
The present disclosure is directed to methods for attaching a plurality of surface features to a rotor blade of a wind turbine. Such methods may include direct molding of the surface features to the rotor blade, bonding arrays of connected components to the rotor blade and subsequently removing connections between components, as well as using a flexible template with or without a tinted adhesive.
1. A method for forming and attaching a plurality of surface features onto a rotor blade of a wind turbine, the method comprising:
locating a mold of the plurality of surface features at a desired location on either of a suction side or a pressure side of the rotor blade, the mold forming a plurality of cavities with either of the suction side or the pressure side of the rotor blade, each of the plurality of cavities comprising at least one opening;
vacuum drawing one or more liquid resin materials into each of the plurality of cavities through the openings so as to form the plurality of surface features;
solidifying the plurality of surface features so as to adhere to either of the suction side or the pressure side of the rotor blade; and,
removing the mold from either of the suction side or the pressure side of the rotor blade.
2. The method of claim 1 , further comprising applying pressure to the mold before; during, and/or after filling the plurality of cavities with the one or more materials.
3. The method of claim 1 , further comprising removing excess solidified material.
4. The method of claim 1 , wherein the mold is constructed of a flexible material.
5. The method of claim 4 , wherein the flexible material of the mold comprises at least one of rubber, silicone, or combinations thereof.
6. The method of claim 1 , wherein the one or more liquid resin materials comprise at least one of a thermoset material or a thermoplastic material, or combinations thereof.