Method for repairing a shear web of a wind turbine rotor blade and wind turbine rotor blade

A wind turbine rotor blade for a wind turbine, the wind turbine rotor blade comprising:

• two spar caps;
• a shear web having a root end and a tip end and extending between said two spar caps along a longitudinal direction of the wind turbine rotor blade from said root end to said tip end,
• said shear web having two opposite longitudinal edges, each longitudinal edge facing a respective spar cap, and running along the longitudinal direction,
• said shear web having a first lateral side and a second lateral side running between said two opposite longitudinal edges, and
• said shear web having a defect at said root end, the defect running essentially along the longitudinal direction;
• a defect-bridging device having a first cover plate and a second cover plate, wherein the first and second cover plates are prefabricated parts, wherein said first cover plate is bonded onto a first surface region of said first lateral side and said second cover plate is bonded on a second surface region of said second lateral side, such that said first cover plate and said second cover plate at least partly cover the defect;
• and,
• said first cover plate having a first inner surface and said second cover plate having a second inner surface, wherein said first inner surface and said second inner surface were each covered by a peel ply prior to being bonded on respective ones of said first surface region and said second surface region.

A repair assembly for a wind turbine rotor blade, the wind turbine rotor blade including two spar caps and a shear web, the shear web including a root end and a tip end, the shear web extending between the two spar caps along a longitudinal direction of the wind turbine rotor blade from the root end to the tip end, the shear web having two opposite longitudinal edges, each of the two longitudinal edges facing a respective one of the two spar caps and running along the longitudinal direction, the shear web having a first lateral side and a second lateral side running between the two opposite longitudinal edges, the shear web further having a defect at the root end, the defect running essentially along the longitudinal direction, the repair assembly comprising:

• a first cover plate having a first inner surface and a first outer surface;
• a second cover plate having a second inner surface and a second outer surface;
• wherein the first and second cover plates are prefabricated parts;
• said first cover plate being configured to be bonded to a first surface region of the first lateral side so as to completely cover the defect on the first lateral side;
• said second cover plate being configured to be bonded to a second surface region of the second lateral side so as to completely cover the defect on the second lateral side;
• and,
• wherein said inner surfaces of said first cover plate and said second cover plate are covered by a peel ply configured to be removed prior to said first cover plate being bonded to said first outer surface.