Composite material member, gap material, pultrusion device, and pultrusion method
US-2019160763-A1 · May 30, 2019 · US
Method for manufacturing composite structure, and laminate
US12502849B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12502849-B2 |
| Application number | US-202017773836-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 17, 2020 |
| Priority date | Jan 17, 2020 |
| Publication date | Dec 23, 2025 |
| Grant date | Dec 23, 2025 |
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- Title
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Abstract
Official abstract text for this publication.
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.
First claim
Opening claim text (preview).
The invention claimed is: 1 . 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. 2 . The method for manufacturing a composite structure according to claim 1 , wherein the recessed portion or the projecting portion has a sine curve shape. 3 . The method for manufacturing a composite structure according to claim 1 , wherein the laminate includes a planar portion having a flat plate shape, and in the forming step, the recessed portion or the projecting portion is formed such that a boundary between the recessed portion or the projecting portion and the planar portion is a continuous curved surface. 4 . The method for manufacturing a composite structure according to claim 1 , wherein in the longitudinal deformation step, the laminate is deformed such that a region adjacent to the recessed portion or to the projecting portion in the longitudinal direction moves in a direction opposite to an expanding direction of the curved surface of the recessed portion or of the projecting portion. 5 . The method for manufacturing a composite structure according to claim 1 , further comprising a dividing step of dividing fibers of the fiber sheets at division portions in the predetermined portion before the forming step, the fibers being arranged along the longitudinal direction, and the longitudinal direction is orthogonal to the lateral direction in a planar view of the laminate. 6 . The method for manufacturing a composite structure according to claim 1 , wherein the laminate includes the plurality of fiber sheets in which the fibers are divided at the division portions in the dividing step, and the division portions provided in the fiber sheets are disposed apart from each other in the longitudinal direction not to overlap each other on a cross section in a lamination direction of the laminate, the lamination direction is orthogonal to the longitudinal direction and the lateral direction, and the division portions are provided in the recessed portion or in the projection portion.
Assignees
Inventors
Classifications
Panels; Plates; Sheets · CPC title
Glass · CPC title
Carbon · CPC title
the structure being shaped to form a three-dimensional configuration · CPC title
Aircraft · CPC title
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Frequently asked questions
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- What does patent US12502849B2 cover?
- 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 …
- Who is the assignee on this patent?
- Mitsubishi Heavy Ind Ltd
- What technology area does this patent fall under?
- Primary CPC classification B29C70/46. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Dec 23 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 12 related publications on this page (citations in our corpus or others sharing the same primary CPC).