# US 9,040,148 B2 · Method for obtaining a part made of a composite for the purpose of limiting the edge effects

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- Number: US 9,040,148 B2
- Document ID: US9040148B2
- Status: Granted
- Kind: B2
- Application number: 13/067,806
- Filed: 2011-06-28
- Published: 2011-12-29
- Granted: 2015-05-26
- Earliest claimed: 2010-06-28
- Assignees: Airbus Operations GmbH
- Applicants: Freddy Favreau; Denis Brossard
- Inventors: Freddy Favreau; Denis Brossard
- Web page: https://patentgrep.com/patent/US9040148B2

## CPC

- B29C 70/545: {Perforating, cutting or machining during or after moulding}
- B29C 70/302: {Details of the edges of fibre composites, e.g. edge finishing or means to avoid delamination}
- Y10T 156/108: Flash, trim or excess removal
- Y10T 428/24752: Laterally noncoextensive components
- Y10T 428/24777: Edge feature
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

The invention relates to method for obtaining a part made of a composite of fibers embedded in a resin matrix which comprises a body and an edge. The method comprises a first step of stacking plies of fibers and further comprises a step of curing the plies. The method further comprises prior to the curing step, the step of covering the edge with at least one additional ply, in order to compensate for the migration of the resin during curing.

## Claims

### Claim 1

A blank made of composite material comprised of a plurality of plies, the blank comprising:
a body; and
an edge, wherein the edge comprises a zone to be removed and said zone includes at least one additional ply, said additional ply having a width smaller than a width of the zone to be removed.

### Claim 2 (depends on 1)

The blank according to claim 1, wherein the at least one additional ply is only present on the zone to be removed.

### Claim 3 (depends on 1)

The blank according to claim 1, wherein said at least one additional ply includes a plurality of plies, each ply within the at least one additional ply has a smaller width than an underlying ply.

### Claim 4 (depends on 2)

The blank according to claim 2, wherein each ply within the at least one additional ply has a smaller width than an underlying ply.

### Claim 5

A blank including an edge zone to be removed to make a desired part, said blank comprising:
a plurality of fiber layers embedded in a cured resin matrix, said blank having a desired thickness, and
said edge zone including at least one fiber layer in additional to said plurality of fiber layers, wherein said at least one additional fiber layer partially covers said edge zone to be removed and has a smaller width than the width of the edge zone to be removed.

### Claim 6 (depends on 5)

The blank according to claim 5, wherein said at least one additional fiber layer is not present on the part once the edge zone has been removed.

### Claim 7 (depends on 6)

The blank according to claim 6, wherein the at least one additional fiber layer comprises more than one layer where each layer has a smaller width than an underlying layer.