| 摘要 |
PROBLEM TO BE SOLVED: To provide a reinforcement beam material which receives a force from the skin efficiently without enlargement of areas of unnecessary parts when used as stiffener.SOLUTION: A reinforcement beam material 10 consists of a fiber-reinforced composite material including, as a reinforcing material, a three-dimensional fiber structure formed by folding a cylindrical braiding material with one end side diameter-expanded in a tapered form into a cross-section T-shaped shape consisting of a reference plate part 12 and a protrusion part 13. The cylindrical braiding material has a triaxial configuration. The three-dimensional fiber structure is formed so that the tip side of the part (protrusion 13) orthogonal to the joint surface with a skin 11 is inclined toward the reference plate part 12 when the reference plate part 12, i.e. the reinforcement beam material 10, is joined with the skin 11. |
