Abstract: A novel fabrication method of integral wind turbine blade is investigated, which combines in-situ UV curing process and automated fiber placement manufacturing technology in order to improve production efficiency and quality stability of traditional resin transfer molding (RTM) technology. To get the whole initial place path information of the front and rear fringes of the wind turbine blade with great curvature surface, an algorithm using transition line to generate trajectories is presented. The placement trajectories of blade are generated automatically by the secondary development technology based on CATIA CAA. The possible fabrication method of engineering mold for the blade is analyzed, and in-situ UV curing fiber placement fabrication experiments of integral wind turbine blade are carried out to verify the feasibility of the new method. Because the prepregs are placed and wound around the whole blade at any ply angle, and without a cohesive layer between upper shell and lower shell of blade, so the integral blade would exhibit much better whole strength than the two-shell blade. In order to enhance the performances of in-situ UV curing glass fiber reinforced plastic composite, the in-depth research about high quality UV curing prepreg needs to be conducted.

Key words: UV curing;integral;wind turbine blade;trajectory planning;automated fiber placement