Method for non-contact and non-destructive inspection of fault in rotor blades of wind power plant using heat flow thermography, involves arranging flying carrier at controlled distance from rotor blade to be tested

摘要

The method involves exciting a rotor blade (1) to be tested by excitation sources designed as a specially formed deflection and focusing system (7). A solar radiation is focused on a surface of the blade. A heat flow due to the excitation of the blade is detected by an infrared sensor (3) to obtain a series of thermal images, where the sensor is firmly fixed stationary or together with the excitation sources on a flying carrier (4). The images are processed using various types of signal and image processing methods. The carrier is arranged at a controlled distance from the blade. An independent claim is also included for a device for inspection of fault in rotor blades of a wind power plant using heat flow thermography, comprising flying carrier.