Dry preform, annular structure made of a composite material, and manufacturing method for the annular structure
AssigneeShikibo Ltd.
InventorsTetsuro HIROKAWA, Shigeru Nishiyama
Life of this patent
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Abstract
Provided is a first reinforcing fiber layer (11) formed of reinforcing fibers which are wound around an outer periphery of a mandrel (20), aligned in parallel to a direction (+θ direction) in which the reinforcing fibers intersect with an annular direction (0° direction) of the mandrel (20), and seamlessly continue in the annular direction of the mandrel (20) by an amount of at least one rotation.
Claims19
A dry preform having a hollow annular shape and formed of a plurality of reinforcing fiber layers laminated on an outer periphery of an annular mandrel, the annular mandrel being separated from the dry preform afterward,
- the dry preform comprising a first reinforcing fiber layer formed of reinforcing fibers which are wound spirally around the outer periphery of the annular mandrel, seamlessly continue in an annular direction by an amount of at least one rotation, and are aligned in a direction in which the reinforcing fibers intersect with the annular direction.
A manufacturing method for an annular structure comprising:
- forming, by winding reinforcing fibers spirally around an outer periphery of an annular mandrel, a dry preform comprising a first reinforcing fiber layer formed of reinforcing fibers, which seamlessly continue in an annular direction by an amount of at least one rotation, and are aligned in a direction in which the reinforcing fibers intersect with the annular direction;
- separating the dry preform from the annular mandrel by dividing the dry preform along the annular direction into a plurality of divided dry preforms;
- and
- impregnating a resin into the plurality of divided dry preforms.
A manufacturing method for an annular structure comprising:
- forming, by winding reinforcing fibers spirally around an outer periphery of an annular mandrel, a dry preform comprising a first reinforcing fiber layer formed of reinforcing fibers, which seamlessly continue in an annular direction by an amount of at least one rotation, and are aligned in a direction in which the reinforcing fibers intersect with the annular direction;
- impregnating a resin into the dry preform so that a composite material is formed;
- and
- separating the composite material from the annular mandrel by dividing the composite material along the annular direction into a plurality of divided composite materials.
Dependencies are inferred from the claim text.