Abstract: A wind turbine rotor blade is provided including a reinforcement element embedded in the body of the rotor blade and extending in a longitudinal direction of the rotor blade; a number of piezo-electric transducers arranged between the leading edge of the rotor blade and the reinforcement element; a number of piezo-electric transducers arranged between the reinforcement element and the trailing edge of the rotor blade; and a connector arrangement configured to apply an excitation signal to any one of the piezo-electric transducers, and to transmit a sensed signal from any one of the piezo-electric transducers to an evaluation module. A wind turbine including a number of such rotor blades and a method of measuring strain in a reinforcement element arranged in such a rotor blade is also provided.

Abstract: A wind turbine component adapted to be attached to a wind turbine, wherein the component is a cover element adapted to cover at least one part of a wind turbine or an aerodynamic element adapted to be attached to a rotor blade of a wind turbine, wherein the component includes a main body with a continuous and at least partly curved surface, wherein the main body is formed by a layer stack including a plurality of layers, wherein at least two of the layers are of a different material.

Abstract: A method for detecting a status of a rotor blade for a wind turbine, the rotor blade including at least an aerodynamic device for influencing the airflow, the aerodynamic device being movable between a first and a second configuration, the method including the steps of: measuring an output signal measured by at least one sensor installed on the wind turbine, moving the aerodynamic device between the first configuration and the second configuration, measuring a change in the induced output signal, post-processing the measured output signal, wherein the post-processing is performed in the frequency domain and includes: deriving a frequency spectrum 1, calculating an upper spectrum interval of the frequency spectrum above a frequency threshold value, comparing the upper spectrum interval with a reference frequency spectrum deriving a status of the rotor blade based on the step of comparing.

Abstract: A method for fabricating a wind turbine blade shell, wherein the wind turbine blade shell is fabricated in a casting process using a mould and a plurality of shell components, includes the steps of: providing the mould and the plurality of shell components, providing at least one alignment mark at the mould and/or at one or more shell components placed in the mould, providing at least one marker at the position of the at least one alignment mark, and arranging the or further shell components in the mould and casting the wind turbine blade shell.