Shear web for a wind turbine rotor blade
The present disclosure is directed to a shear web for a rotor blade of a wind turbine and a method of manufacturing and assembling same. The rotor blade generally includes an upper shell member having an upper spar cap configured on an internal surface thereof and a lower shell member having a lower spar cap configured on an internal surface thereof. Further, the shear web extends between the spar caps along a longitudinal length of the blade. In addition, the shear web includes first and second outer pultruded layers at least partially encompassing a core material, wherein end portions of the first and second outer pultruded layers form compressed flanges at opposing ends of the shear web.
1. A rotor blade assembly for a wind turbine, comprising:
an upper shell member having at least one upper spar cap configured on an internal surface thereof;
a lower shell member having at least one lower spar cap configured on an internal surface thereof; and,
a shear web extending between the spar caps along a longitudinal length of the rotor blade, the shear web comprising a core material and first and second outer pultruded layers that at least partially encompass the core material,
wherein end portions of the first and second outer pultruded layers form chord-wise extending flanges at opposing ends of the shear web that are bonded to the upper and lower spar caps, the flanges comprising portions of the core material and the first and second outer pultruded layers.
2. The rotor blade assembly of claim 1 , wherein the flanges extend parallel to a length-wise axis of the shear web.
3. The rotor blade assembly of claim 2 , wherein the upper and lower spar caps comprise two spar cap components separated by a gap, the flanges being bonded within the gap of each of the spar caps, respectively.
4. The rotor blade assembly of claim 1 , wherein the flanges comprise regions containing the core material and regions without the core material.
5. The rotor blade assembly of claim 1 , wherein the flanges extend from the opposing ends of the core material in the same direction along a chord-wise axis.
6. The rotor blade assembly of claim 1 , wherein the flanges extend from the opposing ends of the core material in opposite directions along a chord-wise axis.
7. The rotor blade assembly of claim 6 , wherein the end portions of the first and second outer pultruded layers are separated to form the flanges.
8. The rotor blade assembly of claim 1 , further comprising an adhesive configured at interfaces between the flanges and the spar caps, wherein the adhesive comprises one of or a combination of the following: a bond paste, a binder, a tape, a gum, a wax, a plaster, a grout, a resin, an epoxy, a sealant, or glue.
9. The rotor blade assembly of claim 1 , wherein the first and second outer pultruded layers are constructed, at least in part, of a reinforced composite laminate material, wherein the reinforced composite laminate material comprises a thermoplastic material.
10. The rotor blade assembly of claim 1 , wherein the shear web further comprises a channel.