Various kinds of defects occur on the wind turbine blades during processes of production

transportation

installation and operation.Thus

several commonly used non-destructive testing technologies for wind turbine blades were compared in this paper.The results indicate that all non-destructive testing techniques can effectively detect the defects under certain conditions.Every link of wind turbine blades could be monitored using a variety of the combination of non-destructive testing methods to decrease the hidden danger in quality.Employing non-destructive testing technology in monitoring the defects of wind turbine blades can not only determine the defect of wind turbine blades

but also improve the quality of blade and accumulates data for the development of dynamic monitoring technology.