US 12,502,849 B2Granted

Method for manufacturing composite structure, and laminate

AssigneeMitsubishi Heavy Industries, Ltd.

InventorsMasahiko Shimizu, Homare Yamato, Toshiki Kitazawa

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Abstract

The purpose of the present invention is to further enhance the strength of a manufactured composite structure by further suppressing the occurrence of wrinkling. A method for manufacturing a composite structure, the method comprising: a lamination step for layering a plurality of fiber sheets and molding a plate-form laminate; a forming step for forming a recess formed by a curved surface in a prescribed portion of the laminate; a short-direction deformation step for deforming the laminate in the short direction thereof after the forming step to configure a long-direction cross-section of the laminate in a prescribed shape; and a long-direction deformation step for deforming the laminate in the long direction after the forming step, so that the recess formed in the forming step deforms, to configure a short-direction cross section in a prescribed shape.

Claims6

Dependent claims

A method for manufacturing a composite structure, the method comprising:

a lamination step of molding a laminate having a plate shape by laminating a plurality of fiber sheets;
a forming step of forming a recessed portion or a projecting portion formed by a curved surface, in a predetermined portion of the laminate;
a lateral deformation step of providing a predetermined shape to a cross section in a longitudinal direction by deforming the laminate in a lateral direction after the forming step;
and
a longitudinal deformation step of providing a predetermined shape to a cross section in the lateral direction by deforming the laminate in the longitudinal direction to deform the recessed portion or the projecting portion formed in the forming step, after the forming step,
wherein the recessed portion or the projecting portion has a constant length in the longitudinal direction regardless of a position in the lateral direction, over an entire area in the lateral direction, and the recessed portion and the projecting portion comprise a rectangular shape in a plan view.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/773,836Filed 17 Jan 2020
Published: US 2022/0371291 A124 Nov 2022
Granted: 23 Dec 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

B29C 70/46
For producing articles of definite length, i.e. discrete articles: using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29D 99/0003
Subject matter not provided for in other groups of this subclass: producing profiled members, e.g. beams
B29C 53/06
Of plates or sheets: forming folding lines by pressing or scoring
B29C 53/083
Of tubes or other profiled members: bending longitudinally, i.e. modifying the curvature of the tube axis