GB2222793A - "Method of forming a fibre reinforced material" - Google Patents
"Method of forming a fibre reinforced material" Download PDFInfo
- Publication number
- GB2222793A GB2222793A GB8821747A GB8821747A GB2222793A GB 2222793 A GB2222793 A GB 2222793A GB 8821747 A GB8821747 A GB 8821747A GB 8821747 A GB8821747 A GB 8821747A GB 2222793 A GB2222793 A GB 2222793A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fibres
- tube
- braided
- metal
- fibre
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
- B29C70/083—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats
- B29C70/085—Combinations of continuous fibres or fibrous profiled structures oriented in one direction and reinforcements forming a two dimensional structure, e.g. mats the structure being deformed in a three dimensional configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
Abstract
A braided fibre tube (10) is placed in a mould cavity and a molten substance is caused to infiltrate the gaps between the fibres. The tube may be of ceramic, e.g. silicon carbide or carbon, fibres and the molten substance a metal, e.g. aluminium or titanium. Alternatively, the tube may be of polymer fibres and the infiltrant a resin. In an embodiment, the tube (10) comprises inner (12) and outer (14) braided fibre tubes between which is sandwiched a tube (16) of uni-directional fibres. The assembly is formed with a terminal flange (18). The assembly is placed in a cavity of a mould shaped according to the artefact to be produced, and aluminium, melted in a reservoir below the mould, is forced by gas pressure in a chamber housing the reservoir up a riser tube into the mould cavity. <IMAGE>
Description
Fabricating Fibre-Reinforced Material
The present invention relates to a method of fabricating a fibre-reinforced material in which the fibres are arranged and positioned in a mould cavity and a molten substance is caused to infiltrate the gaps between the fibres.
A major difficulty in such a method is in maintaining the desired orientation of the fibres when placing them in the mould cavity and during the moulding process.
One known way of overcoming this problem is to wind the fibres onto a tubular former and to place the fibres and the former in the mould although this technique is itself quite difficult.
An object of the present invention is to provide an improved method of fabricating fibre-reinforced materials.
According to the present invention we provide a method of forming a fibre reinforced material comprising placing a braided fibre tube in a mould cavity and causing a molten substance to infiltrate the gaps between the fibres.
Thus the invention provides a way of forming the fibres into a self-supporting tubular structure prior to the moulding process so that the orientation of the fibres is maintained throughout the moulding process.
The present invention may be utilised when forming a metal matrix composite of ceramic fibres eg. silicon carbide and a metal eg.
aluminium or titanium to form a material having exceptional torsional rigidity.
Alternatively the method of the invention may comprise using polymer fibres and a resin for infiltration.
Optionally, the invention may comprise placing a plurality of concentric braided tubes in the mould cavity prior to infiltration.
Also, two concentric braided fibre tubes can be used as sleeves to sandwich longitudinally aligned fibres in position.
The present invention facilitates the formation of terminal flanges which can be formed by causing an end of a braided tube to be splayed in the mould cavity.
The present invention will now be described, by way of example, with reference to the accompanying drawings:
Figure 1 is a diagram illustrating the implementation of a method according to the present invention using a tubular arrangement;
Figure 2 is a plan view from above of the tubular arrangement of
Figure 1;
Figure 3 is a diagram of apparatus for implementing a method according to the present invention.
Referring to Figures 1 and 2, a tubular arrangement 10 comprises two concentric braided tubes 12 and 14 and a tube 16 of unidirectional fibres sandwiched therebetween. The lower end of all three of the tubes 12, 14 and 16 is splayed so as to from a terminal flange 18.
The fibres forming the tubes 12, 14 and 16 may be ceramic fibres such as silicon carbide fibres or may be carbon fibres. It may be that different types of fibre are used for forming the different tubes 12, 14 and 16.
In use, the tubular arrangement 10 may be placed in apparatus of the type shown in Figure 3. In Figure 3, apparatus 20 for causing liquid metal infiltration (LMI) of an article comprises a die 22 and a chamber 24. The die 22 comprises a cavity 26 shaped according to the article to be produced. The chamber 24 comprises a reservoir 28 surrounded by a heating coil 30. A riser tube 32 interconnects the cavity 26 and the reservoir 28. The chamber 24 further comprises a pressurisationl vacuum port 33 and an upper flange 34 to which a flange 36 of the die 22 is bolted.
In use, a braided tube is placed in the cavity 26 and a metal 38 such as aluminium is placed in the reservoir 28. The heating coil 30 is activated so as to melt the metal. The pressure in the chamber 24 is raised so as to force molten metal up the tube 32 to infiltrate the braided tube in the cavity 26.
The tubular arrangement of the type shown in Figures 1 and 2 may be utilised in implementing a method according to the present invention. Other arrangements employing braided tubes may also be used according to requirements. Braided tubes having a non-circular cross-section may be used.
Claims (13)
1) A method of forming a fibre reinforced material comprising placing a braided fibre tube in a mould cavity and causing a molten substance to infiltrate the gaps between the fibres.
2) A method according to claim 1 comprising using a braided tube formed from ceramic fibres and using a metal for infiltration so as to form a metal matrix composite material.
3) A method according to claim 2 wherein the ceramic material is silicon carbide, carbon or other material in the form of a tow.
4) A method according to claim 2 or claim 3 wherein the metal is aluminium.
5) A method according to claim 2 or claim 3 wherein the metal is titanium.
6) A method according to claim 1 comprising using a braided tube formed from fibres and using a resin for infiltration.
7) A method according to any preceding claim comprising placing a plurality of concentric braided tubes in the mould cavity prior to infiltration.
8) A method according to claim 7 comprising sandwiching longitudinally aligned fibres between two concentric braided tubes.
9) A method according to any preceding claim comprising causing an end of a braided tube to be splayed in the mould cavity so as to form a terminal flange.
10) A method according to any preceding claims comprising using a tube braided in a multi-start helical arrangement.
11) A method according to claim 10 comprising using a tube which is braided so that overlapping fibres are substantially mutually orthogonal.
12) A method substantially as herein described with reference to, and as illustrated in the accompanying drawings.
13) An article formed from fibre-reinforced material made according to any preceding claim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8821747A GB2222793A (en) | 1988-09-16 | 1988-09-16 | "Method of forming a fibre reinforced material" |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8821747A GB2222793A (en) | 1988-09-16 | 1988-09-16 | "Method of forming a fibre reinforced material" |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8821747D0 GB8821747D0 (en) | 1989-03-30 |
| GB2222793A true GB2222793A (en) | 1990-03-21 |
Family
ID=10643697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8821747A Withdrawn GB2222793A (en) | 1988-09-16 | 1988-09-16 | "Method of forming a fibre reinforced material" |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2222793A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016838A1 (en) * | 1993-12-17 | 1995-06-22 | Scaffold Connection Corporation | Scaffold system |
| WO2005052207A3 (en) * | 2003-11-25 | 2005-07-28 | Touchstone Res Lab Ltd | Filament winding for metal matrix composites |
| US11919111B1 (en) | 2020-01-15 | 2024-03-05 | Touchstone Research Laboratory Ltd. | Method for repairing defects in metal structures |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3107152A (en) * | 1960-09-12 | 1963-10-15 | Union Carbide Corp | Fibrous graphite |
| GB1185349A (en) * | 1967-02-21 | 1970-03-25 | Union Carbide Corp | Composite Article. |
| GB1393989A (en) * | 1971-04-19 | 1975-05-14 | Maschf Augsburg Nuernberg Ag | Methods of manufacturing rotationally symmetrical hollow composite bodies |
| GB2032333A (en) * | 1978-09-01 | 1980-05-08 | Du Pont | Manufacture of seamless laminated tubing |
| GB1567328A (en) * | 1975-09-30 | 1980-05-14 | Honda Motor Co Ltd | Method for producttion of fibre-reinforced composite material |
| EP0040492A2 (en) * | 1980-05-21 | 1981-11-25 | Mitsubishi Rayon Co., Ltd. | Moulding material for fibre reinforced plastic tubes |
| EP0185460A2 (en) * | 1984-11-15 | 1986-06-25 | Textilver S.A. | Reformable composites and methods of making same |
| GB2183785A (en) * | 1985-09-14 | 1987-06-10 | Honda Motor Co Ltd | Slide support members for pistons |
-
1988
- 1988-09-16 GB GB8821747A patent/GB2222793A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3107152A (en) * | 1960-09-12 | 1963-10-15 | Union Carbide Corp | Fibrous graphite |
| GB1185349A (en) * | 1967-02-21 | 1970-03-25 | Union Carbide Corp | Composite Article. |
| GB1393989A (en) * | 1971-04-19 | 1975-05-14 | Maschf Augsburg Nuernberg Ag | Methods of manufacturing rotationally symmetrical hollow composite bodies |
| GB1567328A (en) * | 1975-09-30 | 1980-05-14 | Honda Motor Co Ltd | Method for producttion of fibre-reinforced composite material |
| GB2032333A (en) * | 1978-09-01 | 1980-05-08 | Du Pont | Manufacture of seamless laminated tubing |
| EP0040492A2 (en) * | 1980-05-21 | 1981-11-25 | Mitsubishi Rayon Co., Ltd. | Moulding material for fibre reinforced plastic tubes |
| EP0185460A2 (en) * | 1984-11-15 | 1986-06-25 | Textilver S.A. | Reformable composites and methods of making same |
| GB2183785A (en) * | 1985-09-14 | 1987-06-10 | Honda Motor Co Ltd | Slide support members for pistons |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995016838A1 (en) * | 1993-12-17 | 1995-06-22 | Scaffold Connection Corporation | Scaffold system |
| US5560730A (en) * | 1993-12-17 | 1996-10-01 | Scaffold Connection Corporation | Scaffold system |
| WO2005052207A3 (en) * | 2003-11-25 | 2005-07-28 | Touchstone Res Lab Ltd | Filament winding for metal matrix composites |
| US7681625B2 (en) | 2003-11-25 | 2010-03-23 | Touchstone Research Laboratory, Ltd | Filament winding for metal matrix composites |
| US11919111B1 (en) | 2020-01-15 | 2024-03-05 | Touchstone Research Laboratory Ltd. | Method for repairing defects in metal structures |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8821747D0 (en) | 1989-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |