WINDMILL BLADE FOR WIND POWER GENERATION AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a blade member excellent in safety which is lightweight, highly rigid, and hard to break even though being collided with objects which come flying and the like, and provide its low-cost manufacturing method.

SOLUTION: In the windmill blade for a wind power generation, the blade member 1 is constituted of a skin material made of a carbon-fiber-reinforced resin and a core material having a bulk density lower than the skin material. The leading edge of the blade member 1 is covered with a resin layer 4 at least 90% longitudinally throughout the length. The resin layer 4 is different from the matrix resin of the skin material 2, and its tensile break strain ε(%) is in the range of 10-500.

COPYRIGHT: (C)2007,JPO&INPIT