Back to results
US 2015/0030803 A1Published application
Composite Laminates Having Hole Patterns Produced by Controlled Fiber Placement
AssigneeThe Boeing Company
InventorsGeoffrey Allen Butler, Brice A. Johnson, Jessica R. Hughes, Justin Honshune Lan
Life of this patent
Estimating the term…
Abstract
A composite laminate has a pattern of holes therein. The holes are formed by laying down plies of unidirectional pre-preg material having varying fiber orientations. The tows are spaced apart and located to form holes through the laminate.
Claims25
A method of producing a composite laminate having a pattern of holes therein, comprising:
- forming a layup by laying up multiple plies of fiber reinforced resin, each of the plies having a fiber orientation and including multiple fiber reinforced resin tows having gaps therebetween;
- and
- varying the fiber orientations of the plies in the layup to form a pattern of holes in the composite laminate.
A method of producing a composite laminate layup having pattern of holes therein, comprising:
- forming a layup by laying up multiple plies of unidirectional pre-preg fiber, each of the plies being laid up by laying down bandwidths of pre-preg fiber tows;
- spacing the tows in each of the bandwidths apart from each other to form gaps between the tows as the bandwidths are being laid down;
- controlling locations of the tows as the bandwidths are being laid down;
- controlling the gaps between the tows as the bandwidths are being laid down;
- and
- varying fiber orientations of the plies to form a pattern of holes in the layup.
3 more elements
A composite laminate having a pattern of holes therein, comprising:
- a plurality of spaced-apart fiber tows having varying fiber orientations arranged to form a pattern of holes in the laminate;
- and
- a resin matrix in which the fiber tows are embedded.
A composite laminate layup containing a pattern of holes therein, comprising:
- a plurality of plies of fiber reinforced resin, each of the plies having a unidirectional fiber orientation and including multiple pre-preg tows having gaps therebetween;
- and
- the plies being arranged such that the gaps between the pre-preg tows form a pattern of holes in the layup.
Dependencies are inferred from the claim text.