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US 8,262,840 B2Granted
Composite material structure with interlayer electrical conductance
AssigneeThe Boeing Company
InventorsMichael Joseph Pepka, Steven George Lemery
Life of this patent
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Abstract
A composite material structure includes a first fiber layer, a second fiber layer, a resin layer between the first fiber layer and the second fiber layer and a plurality of chopped fibers provided in the resin layer.
Claims3
A method of improving electrical conductivity of a composite material structure, comprising:
- adding fibers to a resin layer, wherein the fibers have a length corresponding to a thickness of the resin layer and wherein the length further comprises a value between about 10 microns to about 100 microns;
- impregnating a first fiber layer with said resin layer;
- and
- placing said first fiber layer over a second fiber layer.
1 more element
A method of improving electrical conductivity of a composite material structure for aircraft fabrication, comprising:
- providing a resin layer having a thickness of about 60 microns;
- providing chopped carbon fibers having a length of about 60 microns and generally corresponding to a thickness of said resin layer;
- providing a first fiber layer as an outermost layer of said composite material structure and comprising a resin matrix and carbon fibers provided in said resin matrix;
- adding said chopped fibers to said resin layer in a quantity of from about 0.1% to about 2% by weight;
- impregnating said first fiber layer with said resin layer;
- and
- placing said first fiber layer over a second fiber layer.
4 more elements
Dependencies are inferred from the claim text.