# US 10,766,224 B2 · Panel made of laminates and method of manufacturing the same

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- Number: US 10,766,224 B2
- Document ID: US10766224B2
- Status: Granted
- Kind: B2
- Application number: 15/306,215
- Filed: 2015-04-23
- Published: 2017-02-23
- Granted: 2020-09-08
- Earliest claimed: 2014-04-25
- Assignees: Fokker Aerostructures B.V.
- Applicants: Fokker Aerostructures B.V.
- Inventors: Abdoelfaziel Rajabali
- Web page: https://patentgrep.com/patent/US10766224B2

## CPC

- B32B 5/12: characterised by the relative arrangement of fibres or filaments of {different layers, e.g. the fibres or filaments being parallel or perpendicular to each other}
- B32B 3/28: characterised by a layer comprising a deformed thin sheet {, i.e. the layer having its entire thickness deformed out of the plane}, e.g. corrugated, crumpled (B32B29/08 takes precedence)
- B32B 5/022: {Non-woven fabric}
- B32B 7/03: with respect to the orientation of features (direction of fibres or filaments B32B5/12)
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 15/14: next to a fibrous or filamentary layer
- B32B 27/04: as impregnant, bonding, or embedding substance {(not used)}
- B32B 37/003: {to avoid air inclusion}
- B32B 37/1009: {using vacuum and fluid pressure}
- B32B 38/1808: {characterised by the laying up of the layers}
- B64C 1/12: Construction or attachment of skin panels
- B32B 2250/40: Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
- B32B 2260/021: Fibrous or filamentary layer
- B32B 2260/023: Two or more layers
- B32B 2260/046: Synthetic resin
- B32B 2262/101: Glass fibres
- B32B 2307/516: mono-axially
- B32B 2605/18: Aircraft
- B64C 2001/0072: {from composite materials}
- B64C 2001/0081: {from metallic materials}
- Y02T 50/40: Weight reduction
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B64C: AEROPLANES; HELICOPTERS
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An integrated panel made of interconnected laminates includes stacked first and second metal layers (5, 5′, 5″) and fibre-reinforced adhesive layers (19) between adjacent metal layers. At the location of the transition from the outer surface (7) of the first outer metal layer (5) to the outer surface (7) of the second outer metal layer (4) is located a filler (11). The panel further includes a cladding layer (14), which includes at least one fibre material layer (15, 24) that extends over the filler (11) and the adjacent outer surface regions (12, 13) of the outer metal layers (5, 4) located on opposite sides and which are adhered to the outer surface regions.

## Claims

### Claim 1

An integrated panel of interconnected laminates, comprising:
a first laminate (1); and
a second laminate (2),
the first laminate (1) comprised of stacked first metal layers (5, 5′, 5″) and at least one fibre-reinforced adhesive layer (19) between adjacent metal layers of the first metal layers (5, 5′, 5″), and
the second laminate (2) comprised of stacked second metal layers (4, 4′, 4″) and at least one fibre-reinforced adhesive layer (19) between adjacent metal layers of the second metal layers (4, 4′, 4″),
wherein, from the first and second metal layers, outer metal layers form outer surfaces which in turn define a continuous and uniformly formed panel surface (6), in which, of one pair of outer metal layers that comprises a first outer metal layer (5) of the first laminate (1) and a second outer metal layer (4) of the second laminate (2), the first and second outer metal layers (4, 5) each comprise adjacent joggled edge parts (8, 9) that overlap and are adhered via an adhesion surface (25) of the edge part (9) of the first outer metal layer (5) by means of an adhesive (10), which adhesion surface (25) faces away from the panel surface (6), wherein at a recessed location of transition from the outer surface (7) of the first outer metal layer (5) to the outer surface (7) to the outer surface (4) a filler (11) is located, and
wherein the panel further comprises a cladding layer (14) in the recessed location of transition, which cladding layer comprises at least one fibre material layer (15, 24) extending over the filler (11) and the adjacent outer surface areas (12, 13) of the outer metal layers (5, 4) located on opposite sides of the filler (11) and being adhered to the outer surface areas (12, 13), the outer side of the cladding layer (14) formed by an adhesive layer (16) or by a fibre layer embedded in an adhesive material, and
wherein an outer surface of the cladding layer (14) defines an outer surface of the panel, which coincides with the external surface (6).

### Claim 2 (depends on 1)

The panel according to claim 1, wherein the at least one fibre material layer (15, 24) comprises fibres embedded in an adhesive material.

### Claim 3 (depends on 1)

The panel according to claim 1, wherein the cladding layer (14) is adhered to the filler (11).

### Claim 4 (depends on 1)

The panel according to claim 1, wherein the first and second laminates (1, 2) are joggled at the location of the cladding layer (14).

### Claim 5 (depends on 1)

The panel according to claim 1, the fibre material layer (15, 24) comprises a fibre layer which is embedded in an adhesive material.

### Claim 6 (depends on 1)

The panel according to claim 1, wherein the cladding layer (14) comprises several fibre material layers (15, 24) which are adhered to each other.

### Claim 7 (depends on 6)

The panel according to claim 6, wherein a fibre material layer (15) located more outward, viewed along the outer surface, extends in relation to a more inward located fibre material layer (24).

### Claim 8 (depends on 7)

The panel according to claim 7, wherein the laminates (1, 2) are joggled over a first distance at the location of a more outward located, extending fibre material layer (15), and are joggled over a second distance at the location of a more inward located fibre material layer (24).

### Claim 9 (depends on 1)

The panel according to claim 1, wherein the fibre direction of the fibre material layer(s) (15, 24) is oriented transversely in relation to the edge (20) of the edge part (9) of the first outer metal layer (5).

### Claim 10 (depends on 1)

The panel according to claim 1, wherein a fibre-reinforced adhesive layer (19) comprises fibres that are oriented transversely in relation to the edge (20) of the edge part (9) of the first outer metal layer (5).

### Claim 11 (depends on 1)

The panel according to claim 1, wherein a fibre-reinforced adhesive layer (19) comprises fibres that are oriented in the same direction as the edges (20) of the edge part (9) of the first outer metal layer (5).

### Claim 12 (depends on 1)

The panel according to claim 1, wherein the fibres of the fibre-reinforced adhesive layer(s) (19) and/or the fibres of the fibre material layer(s) (15, 24) comprise glass fibres.

### Claim 13 (depends on 12)

The panel according to claim 12, wherein the fibre material layer(s) (15, 24) is formed from a prepreg of unidirectional fibres which are embedded in a matrix material.

### Claim 14 (depends on 1)

The panel according to claim 1, wherein between the mutually overlapping edge parts (8, 9) of the metal layers (4, 5), the adhesive (10) comprises a supported adhesive material.

### Claim 15 (depends on 1)

The panel according to claim 1, wherein the filler (11) consists of glue between both outer metal layers (4, 5).

### Claim 16 (depends on 1)

The panel according to claim 1, wherein the filler (11) is prism-shaped with a triangular cross-section delimited by the inclined side of the joggled edge area (8) of the joggled second outer metal layer (4), the abutting edge (20) of the first outer metal layer (5) and the surface of the filler (11) that is covered by the cladding layer (14).

### Claim 17 (depends on 1)

The panel according to claim 1, wherein the filler (11) is formed as adhesive squeezed out between the mutually overlapping edge parts (8, 9) of the outer material layers (4, 5).

### Claim 18 (depends on 1)

The panel according to claim 1, in which the fibre-reinforced adhesive layer(s) (19) is/are continuously extended from the first laminate (1) into the second laminate (2).