Patent ID: 11585768

Abstract:
A method of detecting a defect in a wind turbine blade uses a system that includes an X-ray generator, moved by a first transporting means, that generates X-ray to be irradiated to the wind turbine blade; an X-ray detector, moved by a second transporting means, that detects the X-ray generated by the X-ray generator and transmitted through the wind turbine blade; and a control unit. To detect a defect, the control unit divides virtually the wind turbine blade into a plurality of lengthwise sections based on a thickness profile thereof, receives a location of the X-ray generator, and controls output of the X-ray generator based on the location of the X-ray generator relative to the plurality of lengthwise sections. In particular, the output of the X-ray generator is decreased for a section among the plurality of lengthwise sections that is farther from a hub of the wind turbine blade.