| 摘要 |
PROBLEM TO BE SOLVED: To easily and precisely manufacture a curved-surface-shaped sandwich structure having a uniform thickness and high accuracy, a curved-surface sandwich structure having a small curvature in particular and also a sandwich structure having a complicated shape. SOLUTION: In the present manufacturing method of the curved-surface sandwich structure, one side of a block of a polyether imide resin foamed material is machined to be formed into a three-dimensional curved surface, and then a face plate made of FRP and molded in the same curved-surface shape is adhered to the above curved surface, or a face plate of an uncured fiber-reinforced resin prepreg is disposed thereat and joined thereto by heat curing molding. Next, the other side of the block is so machined along the above three-dimensional curved surface as to have a required thickness and to be formed into a three-dimensional curved surface, so that a core be formed. The face plate made of the FRP and molded in the same curved-surface shape is adhered thereafter to the three-dimensional curved surface inside the core of the polyether imide resin foamed material having the required thickness, or the face plate of the uncured fiber-reinforced resin prepreg is disposed thereat and joined thereto by heat curing molding.
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