Composite material panel structural body and method of manufacturing same
AssigneeKawasaki Jukogyo Kabushiki Kaisha
InventorsAkio Kawamata, Yoichi Nakamura
Life of this patent
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Abstract
The number of composite material layers laminated to realize a preset thickness of a substrate, for example, a web portion of a panel structural body is referred to as a reference lamination number. Doubler layers that are the composite material layers added to the reference lamination number are laminated in at least a rib base bottom portion of the substrate. Reinforced fibers that includes basic layers and the doubler layers reach a tip portion of the rib. Filler layers that are composite material layers located only at a portion corresponding to a filler region may be laminated in the rib base bottom portion in addition to the doubler layers.
Claims13
A composite material panel structural body, comprising:
- a substrate;
- and
- a rib standing with respect to the substrate at a rib base bottom portion of the substrate, wherein:
- the substrate includes a laminated structure including basic layers that are composite material layers and which extend along a length of the substrate and into the rib,
- the composite material layers include reinforced fibers and a matrix resin,
- a number of the basic layers corresponds to a thickness of the substrate and the thickness corresponds to a combination of a volume of the substrate and a volume of the rib, and
- the substrate further includes doubler layers that are laminations of the composite material layers, wherein the doubler layers are laminated in addition to the basic layers, the doubler layers are included in at least the rib base bottom portion, and the doubler layers extend from the rib base bottom portion to a tip portion of the rib so that the reinforced fibers of the doubler layers reach the tip portion of the rib.
A method of manufacturing a composite material panel structural body, the method comprising:
- forming a prepreg laminated body which includes reinforced fibers and a matrix resin by:
- laminating basic plies that are prepregs, and
- laminating doubler plies that are prepregs at a rib base bottom portion of a substrate so that there is a rib standing at the rib base bottom portion;
- and
- press-forming the prepreg laminated body with a forming die, wherein:
- after the press-forming, the substrate includes:
- a laminated structure including basic layers that are composite material layers and which extend along a length of the substrate and into the rib, the composite material layers including reinforced fibers and a matrix resin, and a number of the basic layers corresponding to a thickness of the substrate and the thickness corresponding to a combination of a volume of the substrate and a volume of the rib, and
- doubler layers that are laminations of the composite material layers, wherein the doubler layers are laminated in addition to the basic layers, the doubler layers are included in at least the rib base bottom portion, and the doubler layers extend from the rib base bottom portion to a tip portion of the rib so that the reinforced fibers of the doubler layers reach the tip portion of the rib.
A composite material panel structural body, comprising:
- a substrate;
- and
- a rib standing with respect to the substrate at a rib base bottom portion of the substrate, wherein:
- the substrate includes a laminated structure including basic layers that are composite material layers and which extend along a length of the substrate and into the rib,
- the composite material layers include reinforced fibers and a matrix resin,
- a number of the basic layers corresponds to a thickness of the substrate, the thickness being calculated based on a volume of the substrate and a volume of the rib,
- the substrate further includes doubler layers that are laminations of the composite material layers, wherein the doubler layers are laminated in addition to the basic layers, the doubler layers are included in at least the rib base bottom portion, and the doubler layers extend from the rib base bottom portion to a tip portion of the rib so that the reinforced fibers of the doubler layers reach the tip portion of the rib,
- a first volume is a volume of a total of the number of basic layers and a number of the doubler layers,
- a second volume is a volume of the composite material panel structural body, and
- the first volume is within a range of not less than the second volume and not more than 1.25 times the second volume.
Dependencies are inferred from the claim text.