Abstract: With the gradual depletion of global stone energy and the deterioration of the Earth's ecological environment, people have begun to pay attention to the use of wind energy. On the one hand, wind power generation, as the most important way to utilize wind energy, has increased its total installed capacity year by year, which has led to an increase in the number of wind turbine blades. On the other hand, in order to pursue greater power generation and higher energy conversion efficiency of wind turbines, it is achieved by manufacturing larger-sized blades. The number of blade operations and the increase of blade size bring a lot of inconvenience to the detection of the blade. As one of the core components of wind turbines, blades can convert wind energy into mechanical energy. In the process of energy conversion, the blade needs to face variable environmental factors and complex stress coupling, which is prone to failure and damage. In order to ensure the safe production and economic benefits of wind power generation and prevent the occurrence of catastrophic accidents, various methods have been developed to timely detect wind turbine blades.

Key words: wind turbines, blades, detection, composites