Propeller blade
US-2024109645-A1 · Apr 4, 2024 · US
Fiber-reinforced composite material
US9302445B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9302445-B2 |
| Application number | US-201214234314-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 10, 2012 |
| Priority date | Jul 27, 2011 |
| Publication date | Apr 5, 2016 |
| Grant date | Apr 5, 2016 |
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- Title
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Abstract
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A fiber-reinforced composite material ( 11 ) is constructed by laminating a plurality of fiber bundle layers formed of a reinforced fiber to form a laminated fiber bundle layer and further impregnating the laminated fiber bundle layer with a matrix. At either side of a neutral surface ( 16 ), the number of +θ layers which are fiber bundle layers having a fiber orientation angle of +θ and the number of −θ layers which are fiber bundle layers having a fiber orientation angle of −θ are the same, the order of laminating the fiber bundle layers is inversely symmetrical with respect to the standard surface, and the number of other fiber bundle layers disposed between the +θ and −θ layers at either side of the standard surface is the same.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fiber-reinforced composite material constructed by impregnating a laminated fiber bundle layer formed by laminating a plurality of fiber bundle layers formed of reinforced fibers with a matrix, wherein the reinforced fibers comprise +θ layers that are fiber bundle layers having a fiber orientation angle of +θ, −θ layers that are fiber bundle layers having a fiber orientation angle of −θ, and other fiber bundle layers, wherein, on each side of a standard surface, the number of +θ layers and the number of −θ layers are the same, wherein the order of laminating the fiber bundle layers is inversely symmetrical with respect to the standard surface, and wherein the number of other fiber bundle layers disposed between the +θ and −θ layers at either side of the standard surface is the same. 2. The fiber-reinforced composite material according to claim 1 , wherein the numbers of the +θ layers and −θ layers existing on each side of the standard surface are respectively two, and wherein, as the order of laminating the fiber bundle layers, the two −θ layers are disposed between the two +θ layers at one side of the standard surface, and the two +θ layers are disposed between the two −θ layers at the other side. 3. The fiber-reinforced composite material according to claim 1 , wherein θ is 45°. 4. The fiber-reinforced composite material according to claim 1 , wherein the +θ layers constitute one pair of two layers, and wherein the −θ layers constitute one pair of two layers. 5. The fiber-reinforced composite material according to claim 1 , wherein the fiber-reinforced composite material constitutes a structure having a flat-plate like skin and one or more webs extending vertically to the skin. 6. The fiber-reinforced composite material according to claim 1 , wherein the fiber bundle layers are composed of a unidirectional fabric. 7. The fiber-reinforced composite material according to claim 3 , wherein the other fiber bundle layers are fiber bundle layers having a fiber orientation angle of 0° or 90°, and wherein the fiber bundle layers having a fiber orientation angle of 0° or 90° are composed of a plain weave fabric or twill fabric. 8. The fiber-reinforced composite material according to claim 4 , wherein the +θ layers is a fiber bundle layer having a fiber orientation angle of +36° and a fiber bundle layer having a fiber orientation angle of +72°, and wherein the −θ layers is a fiber bundle layer having a fiber orientation angle of −36° and a fiber bundle layer having a fiber orientation angle of −72°.
Assignees
Inventors
Classifications
- B32B5/12Primary
characterised by the relative arrangement of fibres or filaments of {different layers, e.g. the fibres or filaments being parallel or perpendicular to each other} · CPC title
Stringers, longerons · CPC title
of parallel stacked sheets only · CPC title
Carbon fibres, e.g. graphite fibres · CPC title
Synthetic resin · CPC title
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Frequently asked questions
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- What does patent US9302445B2 cover?
- A fiber-reinforced composite material ( 11 ) is constructed by laminating a plurality of fiber bundle layers formed of a reinforced fiber to form a laminated fiber bundle layer and further impregnating the laminated fiber bundle layer with a matrix. At either side of a neutral surface ( 16 ), the number of +θ layers which are fiber bundle layers having a fiber orientation angle of +θ and the nu…
- Who is the assignee on this patent?
- Kamiya Ryuta, Tsuji Ryohei, Kuno Shun, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification B32B5/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Apr 05 2016 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).