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US 11,926,077 B2Granted
Composite sandwich panels with over-crushed edge regions
AssigneeThe Boeing Company
InventorsJason Turner, Mitchell Zachary Kotlik, Christopher Robert Schwartz, Michael B. Black
Life of this patent
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Abstract
A composite sandwich panel comprises a first composite skin, a second composite skin, a hollow cell core between the first composite skin and the second composite skin, and a first over-crush edge region with a first edge. The first edge has a first thickness at least 40% less than a nominal thickness of the composite sandwich panel. The first over-crush edge region has a length of at least 0.25 inches over which a thickness of the composite sandwich panel decreases.
Claims20
A composite sandwich panel comprising:
- a first composite skin;
- a second composite skin;
- a hollow cell core between the first composite skin and the second composite skin, wherein the first composite skin and the second composite skin and the hollow cell core are consolidated resulting in a 5% to 10% reduction in thickness of the entire composite panel to a nominal thickness;
- a first edge comprising a first over-crush edge region, the first over-crush edge region having a first thickness at least 40% less than the nominal thickness of the composite sandwich panel, wherein the first over-crush edge region has a length of at least 0.25 inches over which a thickness of the composite sandwich panel decreases;
- and
- an open edge, wherein the open edge is the nominal thickness of the composite sandwich panel.
3 more elements
A composite sandwich panel comprising:
- a first composite skin;
- a second composite skin;
- a hollow cell core between the first composite skin and the second composite skin, wherein the first composite skin and the second composite and the hollow cell core are consolidated by a crush pressure applied to an entirety of the first composite skin and the second composite skin in contact with the hollow cell core resulting in a 5% to 10% reduction in thickness of the entire composite panel to a nominal thickness;
- a first over-crush edge region formed by an over-crush pressure applied to portions of the first composite skin, the second composite skin, and the hollow cell core, the first over-crush edge region having a first thickness at least 40% less than the nominal thickness of the composite sandwich panel, the nominal thickness being a thickness of the composite sandwich panel away from the first over-crush edge region, wherein the nominal thickness is in a range of 0.083 inches to 0.50 inches, and wherein the first over-crush edge region has a length of at least 0.25 inches over which the thickness of the composite sandwich panel decreases;
- and
- an open edge having no over-crush edge region, wherein the open edge is the nominal thickness of the composite sandwich panel.
3 more elements
Dependencies are inferred from the claim text.