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US 9,314,979 B1Granted
Trapezoidal rework patch
AssigneeThe Boeing Company
InventorsEugene A. Dan-Jumbo, Russell Lee Keller
Life of this patent
Estimating the term…
Abstract
A composite rework patch and method. The composite rework patch comprises a trapezoidal shape, a first region, and a second region. The trapezoidal has a first base and a second base, the first base parallel to the second base. The first region comprises a first composite material portion and a first adhesive portion. The second region comprises a second composite material portion and a second adhesive portion.
Claims21
A composite rework patch comprising:
- a trapezoidal planform shape comprising a first base and a second base, the first base parallel to the second base;
- a first region comprising a first composite material portion and a first adhesive portion, such that the first region comprises an innermost region of a plurality of regions;
- and
- a second region comprising a second composite material portion and a second adhesive portion, such that the second region concentrically surrounds the first region and comprises a strain elongation value lower than a strain elongation value of the first region.
1 more element
A system that comprises:
- a structure;
- and
- a composite rework patch placed over a portion of the structure, in which the composite rework patch comprises a trapezoidal planform shape having a first base and a second base, the first base parallel to the second base;
- a first region that comprises a first composite material portion and a first adhesive portion such that the first region comprises an inner most region of a plurality of regions;
- and a second region comprising a second composite material portion and a second adhesive portion, such that the second region concentrically surrounds the first region and comprises a strain elongation value lower than a strain elongation value of the first region.
2 more elements
A rework patch configured to arrest an extension of an inconsistency via a configuration tailored to:
- minimize effects of a sigma stress, a tau XZ stress, a tau YZ stress and a diagonal Qxy in-plane interfacial stress, such that the configuration comprises:
- a trapezoidal planform shape;
- and
- a plurality of concentric regions, such that a value for a tensile modulus for each region in the plurality of regions reduces progressively for each region located radially further from a center of an innermost region of the plurality of regions.
1 more element
Dependencies are inferred from the claim text.