DE10018035A1 - Core material for sandwich structures, in particular, light weight structures incorporates channels whose orientation, number and thickness are optimized for a particular application - Google Patents
Core material for sandwich structures, in particular, light weight structures incorporates channels whose orientation, number and thickness are optimized for a particular applicationInfo
- Publication number
- DE10018035A1 DE10018035A1 DE2000118035 DE10018035A DE10018035A1 DE 10018035 A1 DE10018035 A1 DE 10018035A1 DE 2000118035 DE2000118035 DE 2000118035 DE 10018035 A DE10018035 A DE 10018035A DE 10018035 A1 DE10018035 A1 DE 10018035A1
- Authority
- DE
- Germany
- Prior art keywords
- core material
- sandwich
- structures
- optimized
- thickness
- 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.)
- Ceased
Links
- 239000011162 core material Substances 0.000 title claims abstract description 32
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 238000010276 construction Methods 0.000 claims description 13
- 239000011159 matrix material Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 2
- 230000003466 anti-cipated effect Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000006260 foam Substances 0.000 description 10
- 241000264877 Hippospongia communis Species 0.000 description 7
- 239000004744 fabric Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000032798 delamination Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
- B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
- B29C70/24—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in at least three directions forming a three dimensional structure
-
- 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
- B29C70/086—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 and with one or more layers of pure plastics material, e.g. foam layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/06—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions for securing layers together; for attaching the product to another member, e.g. to a support, or to another product, e.g. groove/tongue, interlocking
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Insbesondere bei Leichtbaukonstruktionen haben sich Sandwichkonstruktionen wegen ihrer hohen Steifigkeit durchgesetzt. Dabei kommt dem Kernwerkstoff eine besondere Bedeutung zu. Seine Aufgabe besteht im wesentlichen darin, die Deckschichten so zu verbinden, daß sich der Abstand der Deckschichten unter Belastung der Sandwichkonstruktion möglichst wenig verändert und dabei die Verschiebung der Deckschichten zueinander so gering wie möglich ist. Beim Stand der Technik wird der ausreichenden Verschiebefestigkeit nicht genug Bedeutung beigemessen.Especially with lightweight constructions Sandwich constructions because of their high rigidity enforced. The core material comes with a special one Meaning too. Its main task is to connect the cover layers so that the distance of the Cover layers under load on the sandwich construction changed as little as possible while shifting the Cover layers to each other is as small as possible. At the booth the technology does not provide sufficient resistance to displacement attached enough importance.
Bisher angewandte Konstruktionen aus Hartschaumstoff, Abstandsgewebe, Waben aus Metall oder faserverstärktem Kunststoff, Hirnhölzer oder Röhren- und Stegkonstruktionen haben den Nachteil, daß ihre Hauptkraftaufnahmerichtungen senkrecht oder parallel zur Deckschicht verlaufen. Um eine optimale Steifigkeit zu erzielen, sind jedoch zusätzliche, auf die zu erwartende Belastung orientierte Kraftaufnahme richtungen wesentlich effektiver.Previously used constructions made of rigid foam, Spacer fabric, honeycomb made of metal or fiber reinforced Plastic, end grain or tube and bridge constructions have the disadvantage that their main force directions run perpendicular or parallel to the top layer. To one Achieving optimal stiffness are, however, additional the expected load-oriented force absorption directions much more effective.
Bei Kernkonstruktionen die ganz oder zum Teil aus faser verstärkten Kunststoffen bestehen, erhöhen alle Faseranteile, die nicht optimal in Hauptkraftaufnahmerichtung liegen, unnötig das Gewicht.In the case of core constructions made entirely or partially of fiber reinforced plastics, increase all fiber shares, which are not optimally in the main force direction, the weight unnecessarily.
Gleichzeitig sollte die Schlagfestigkeit und das Arbeits aufnahmevermögen senkrecht zur Deckschicht, durch eine hohe Flexibilität des Kernwerkstoffes, möglichst groß sein.At the same time, the impact resistance and work should absorption capacity perpendicular to the top layer, due to a high Flexibility of the core material, as large as possible.
Kernmaterialien aus Waben oder wabenähnlicher Struktur können die senkrecht auf die Deckschichten wirkenden Kräfte gut aufnehmen, knicken jedoch bei Überbelastung, da ihre Flexibilität, auf Grund der fest miteinander verbundenen Stege, zu gering ist. Außerdem weisen diese Kernmaterialien oft eine schlechte sphärische Verformbarkeit auf.Core materials made of honeycomb or a honeycomb-like structure can the forces acting perpendicularly on the cover layers are good pick up, but buckle when overloaded, because their Flexibility, due to the firmly connected Webs that is too low. They also have core materials poor spherical deformability.
Ein Hauptproblem bei Sandwichkonstruktionen stellt die Delaminierung der Deckschichten vom Kernwerkstoff dar. Speziell Kernwerkstoffe aus Hartschaumstoff und Waben neigen zur Delaminierung. Zusätzlich kommt es bei Hartschaumstoffen durch auftretende Zugkräfte zur Aufspaltung des Kernwerk stoffes.A major problem with sandwich constructions is the Delamination of the cover layers from the core material. In particular, core materials made of rigid foam and honeycomb tend to for delamination. It also occurs with rigid foams due to tensile forces to split the core plant fabric.
Alle Kernmaterialien die größere an die Deckschichten
angrenzende Hohlräume aufweisen, besitzen den Nachteil, daß
All core materials which have larger cavities adjacent to the cover layers have the disadvantage that
- - Klebstoffnester in den Hohlräumen zusätzliches Gewicht bilden- Adhesive nests in the cavities additional weight form
- - das Verkleben unter Vakuum schwierig ist- bonding under vacuum is difficult
- - die Aushärtung einer Polyesterharzmatrix durch Lufteinschlüsse erschwert wird- The curing of a polyester resin matrix Inclusion of air is difficult
- - sich bei Beschädigung der Deckschicht, Flüssigkeiten ansammeln können- If the cover layer is damaged, liquids can accumulate
Gegenstand der Erfindung ist ein leichter Kernwerkstoff, der eine sehr hohe Steifigkeit der Sandwichkonstruktion bewirkt, der trotzdem flexibel auf Punktbelastung reagiert, der partiell unterschiedliche mechanische Eigenschaften, deren Übergänge gleitend verlaufen können, aufweisen kann, der dementsprechend eine optimale Ausrichtung aller Fasern der Verstärkungsstege ermöglicht, der eine sehr hohe Adhäsionskraft seiner Stege an den Deckschichten aufweist, der eine hohe Druckfestigkeit beim Verkleben der Deckschichten unter Pressdruck besitzt, der außerordentlich geringe, für Flüssigkeiten zugängliche Hohlräume aufweist, der eine einfache Verarbeitungsfähigkeit im Vakuumverfahren und bei sphärischer Verformung aufweist.The invention relates to a light core material which very high rigidity of the sandwich construction, who still responds flexibly to point loads, who partially different mechanical properties, their Transitions can run smoothly, can have accordingly an optimal alignment of all fibers of the Reinforcing bars allows a very high Adhesive force of its webs on the outer layers, the high compressive strength when gluing the top layers under pressure, which is extremely small, for Liquids accessible cavities, the one easy processing in the vacuum process and at has spherical deformation.
Erfindungsgemäß wird dies bei einem Kernwerkstoff vorliegender Problemstellung dadurch erreicht, daß als Ausgangsmaterial ein sphärisch verformbarer geschlossenporiger Hartschaumstoff ausreichender Druckfestigkeit verwendet wird, in den eine Vielzahl von Kanälen je nach Hauptbelastungsrichtungen in unterschiedlicher Ausrichtung, Anzahl und Dicke schräg zur Deckschicht eingebracht sind und in die Faserstränge eingebracht sind, welche die Deckschichten auf direktem Weg in den gewünschten Winkeln verbinden und welche ausreichend aus dem Hartschaumstoff überstehen, um eine optimale Adhäsion nach der Tränkung und Verklebung mit den Deckschichten zu ermöglichen.According to the invention, this is the case with a core material Problem achieved in that as a starting material spherically deformable closed-pore rigid foam sufficient compressive strength is used in the one Variety of channels depending on the main load directions in different orientation, number and thickness at an angle Cover layer are introduced and in the fiber strands are introduced, which cover layers directly in connect the desired angles and which ones are sufficient protrude from the rigid foam to ensure optimum adhesion the impregnation and gluing with the cover layers enable.
Eine neue Eigenschaft des erfindungsgemäßen Kernwerkstoffes ist, daß man durch gezielte Änderungen der Ausrichtung, Dicke und Häufung der Kanäle der Sandwichkonstruktion partielle Änderungen seiner mechanischen Eigenschaften wie beispiels weise richtungsabhängige oder partielle Festigkeitswerte geben kann.A new property of the core material according to the invention is that through targeted changes in orientation, thickness and accumulation of the channels of the sandwich construction partial Changes in its mechanical properties such as give wise directional or partial strength values can.
Bei der Herstellung anderer Kernwerkstoffe läßt sich eine derartige Anforderung kaum realisieren.One can be used in the manufacture of other core materials hardly realize such requirement.
Es ist vorteilhaft, daß bei einem erfindungsgemäßen Kernwerkstoff unter normaler Druckbelastung die Stege nicht nachgeben, sich aber bei Überbelastung durchbiegen können, da die einzelnen Stege nicht untereinander verbunden sind. Bei Konstruktionen aus untereinander verbundenen Stegen (z. B. Waben) ist eine Durchbiegung oder Federwirkung bei senkrechter Druckbelastung nur sehr begrenzt möglich. Oft nimmt eine solche Konstruktion bei Überbelastung Schaden.It is advantageous that in an inventive Core webs under normal pressure load not the webs give way, but can bend if overloaded, because the individual webs are not interconnected. At Constructions from interconnected webs (e.g. honeycomb) is a deflection or spring effect vertical pressure load only possible to a very limited extent. Often Such a structure is damaged if it is overloaded.
Durch die Ausrichtung der Stege in verschiedenen Winkeln zur Deckfläche wird die Verschiebefestigkeit der Deckschichten zueinander wesentlich verbessert, was eine deutlich höhere Steifigkeit der Sandwichkonstruktion, im Gegensatz zu senkrecht ausgerichteten Stegen, bewirkt.By aligning the webs at different angles Cover surface is the resistance to displacement of the cover layers significantly improved to each other, which is a significantly higher Stiffness of the sandwich construction, as opposed to vertically aligned webs.
Auf Grund der genauen Faserausrichtung in den Kanälen entstehen Stege sehr hoher Reißlänge und einem abhängig vom Fasermaterial (z. B. Kohlenstoffasern) sehr hohen spezifischen Elastizitätsmoduls. Dadurch wird eine Kombination von sehr hoher Druckfestigkeit und ausgezeichneter Elastizität des Kernmaterials erreicht.Due to the exact fiber alignment in the channels there are webs of very high tear length and depending on the Fiber material (e.g. carbon fibers) very high specific Modulus of elasticity. This will be a combination of very high compressive strength and excellent elasticity of the Core material reached.
Vorteilhaft für die Adhäsion der Stege mit den Deckschichten ist, daß die Matrix der Stege und die Klebematrix aus dem gleichen Material bestehen und in einem Arbeitsgang aushärten. Damit wird der Delaminierung und einem Aufspalten des Kernmaterials entscheidend entgegengewirkt.Advantageous for the adhesion of the webs with the cover layers is that the matrix of the webs and the adhesive matrix from the consist of the same material and harden in one operation. This will delaminate and split the Core material decisively counteracted.
Kernmaterialien wie Waben oder unverstärkte Hartschaumstoffe haben große Probleme mit der Delaminierung der Deckschichten.Core materials such as honeycombs or unreinforced rigid foams have great problems with delamination of the top layers.
Da die Stegelemente erst während der Verarbeitung mit Matrix gebildet werden, ist im Gegensatz zu Waben eine gute sphärische Verformbarkeit des erfindungsgemäßen Kernmaterials gewährleistet.Since the web elements only work during processing with the matrix unlike honeycombs, is a good one spherical deformability of the core material according to the invention guaranteed.
Bei einem erfindungsgemäßen Kernwerkstoff fixiert der Hartschaumstoff die Faserbündel und hält sie während der Verarbeitung mit Matrix in ihrer Position. Eine Verarbeitung des Kernmaterials unter Belastung (z. B. Vakuum) ist gegenüber Abstandsgeweben problemlos möglich. In the case of a core material according to the invention, the Rigid foam holds the fiber bundle and holds it during the Processing with matrix in their position. A processing of the core material under load (e.g. vacuum) is opposite Spacer fabrics possible without any problems.
Die Kanäle im Hartschaumstoff haben die vorteilhafte Eigenschaft, durch den Kapillareffekt die Tränkung der Fasern zu unterstützen.The channels in the rigid foam have the most advantageous Property, through the capillary effect, the impregnation of the fibers to support.
Gegenüber anderen Kernmaterialien wie z. B. offenen Waben oder Abstandsgeweben hat ein erfindungsgemäßer Kernwerkstoff den Vorteil, daß sich keine offenen Lunkern zur zusätzlichen Matrixaufnahme bilden (Gewichtsminimierung). Es ist auch gewährleistet, daß keine eingeschlossenen Luftpolster ent stehen, welche die Aushärtung von Polyesterharzen behindern würden. Bei einer Beschädigung der Deckschichten kann kein Wasser in das Kernmaterial vordringen.Compared to other core materials such as B. open honeycomb or Spacer fabrics have a core material according to the invention Advantage that there are no open cavities for additional Form matrix uptake (weight minimization). It is also ensures that no enclosed air cushions ent stand, which hinder the curing of polyester resins would. If the cover layers are damaged, no Penetrate water into the core material.
Gegenüber unverstärkten Hartschaumstoffen als Kernmaterial kann wegen der erfindungsgemäßen Bearbeitung das spezifische Gewicht des Hartschaumstoffes drastisch gesenkt werden, da für die mechanischen Eigenschaften des Sandwichmaterials maßgeblich die Stege verantwortlich sind.Compared to unreinforced rigid foam as the core material can because of the processing according to the invention the specific Weight of the rigid foam can be drastically reduced because of the mechanical properties of the sandwich material the webs are largely responsible.
Der Kernwerkstoff (1) wird unter Zuhilfenahme einer Nadel durchstochen und dabei gleichzeitig der Faserstrang (3) in den entstandenen Kanal (2) eingeführt.The core material ( 1 ) is pierced with the aid of a needle and at the same time the fiber strand ( 3 ) is inserted into the channel ( 2 ) formed.
Abhängig von den auf das Sandwichmaterial einwirkenden Kräften sind Neigungswinkel der Nadel zur Deckschicht von etwa 30° bis 90° sinnvoll. Bei der horizontalen Ausrichtung der Nadel sind uni-, bi-, und multidirektionale Kombinationen möglich. Mit einer computergesteuerten Maschine ist es möglich, die Nadel so zu führen, daß Werkstücke entstehen, die partiell unterschiedliche mechanische Eigenschaften aufweisen, deren Übergänge gleitend verlaufen können.Depending on the forces acting on the sandwich material are angles of inclination of the needle to the cover layer of about 30 ° to 90 ° makes sense. When aligning the needle horizontally uni-, bi-, and multidirectional combinations possible. With a computer controlled machine it is possible to Guide the needle so that workpieces are created that are partially have different mechanical properties, the Transitions can run smoothly.
Nach Patentanspruch 1 werden die Faserstränge nach jedem Durchstechen abgeschnitten. According to claim 1, the fiber strands after each Pierced cut off.
Nach Patentanspruch 2 wird eine Vernähmethode angewendet, die mit endlosen Fäden (4) arbeitet.According to claim 2, a sewing method is used, which works with endless threads ( 4 ).
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000118035 DE10018035A1 (en) | 2000-04-03 | 2000-04-03 | Core material for sandwich structures, in particular, light weight structures incorporates channels whose orientation, number and thickness are optimized for a particular application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2000118035 DE10018035A1 (en) | 2000-04-03 | 2000-04-03 | Core material for sandwich structures, in particular, light weight structures incorporates channels whose orientation, number and thickness are optimized for a particular application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE10018035A1 true DE10018035A1 (en) | 2001-10-18 |
Family
ID=7638407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2000118035 Ceased DE10018035A1 (en) | 2000-04-03 | 2000-04-03 | Core material for sandwich structures, in particular, light weight structures incorporates channels whose orientation, number and thickness are optimized for a particular application |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE10018035A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2836690A1 (en) * | 2002-03-04 | 2003-09-05 | Eads Launch Vehicles | PROCESS FOR THE PRODUCTION OF A DOUBLE-WALL THERMOSTRUCTURAL COMPOSITE MONOLITHIC PIECE AND PART OBTAINED |
| WO2010136362A1 (en) * | 2009-05-25 | 2010-12-02 | Airbus Operations Gmbh | Structural component and production method for a structural component |
| EP2204276A3 (en) * | 2008-09-05 | 2011-08-03 | Mike Gelbricht | Multilayer laminated material and method of manufacture |
| US8915201B2 (en) | 2007-11-21 | 2014-12-23 | Airbus Operations Gmbh | Device and method for producing a reinforced foam material |
| US9289927B2 (en) | 2005-05-27 | 2016-03-22 | Airbus Operations Gmbh | Reinforcement of cellular materials |
| EP3257665A3 (en) * | 2016-05-25 | 2018-05-02 | Airbus Operations GmbH | Repair concept comprising pre-impregnated pinned foam core for sandwich structural components |
| CN109195779A (en) * | 2016-05-25 | 2019-01-11 | 巴斯夫欧洲公司 | Fibre-reinforced foamed material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3811778A1 (en) * | 1987-04-08 | 1988-11-03 | Sackner Prod Inc | Thermoformable integral composite material and process for its production |
| WO1995003170A1 (en) * | 1993-05-04 | 1995-02-02 | Foster-Miller, Inc. | Truss reinforced foam core sandwich structure |
| US5736222A (en) * | 1995-11-01 | 1998-04-07 | The Boeing Company | Interlaced Z-pin structures |
-
2000
- 2000-04-03 DE DE2000118035 patent/DE10018035A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3811778A1 (en) * | 1987-04-08 | 1988-11-03 | Sackner Prod Inc | Thermoformable integral composite material and process for its production |
| WO1995003170A1 (en) * | 1993-05-04 | 1995-02-02 | Foster-Miller, Inc. | Truss reinforced foam core sandwich structure |
| US5736222A (en) * | 1995-11-01 | 1998-04-07 | The Boeing Company | Interlaced Z-pin structures |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2836690A1 (en) * | 2002-03-04 | 2003-09-05 | Eads Launch Vehicles | PROCESS FOR THE PRODUCTION OF A DOUBLE-WALL THERMOSTRUCTURAL COMPOSITE MONOLITHIC PIECE AND PART OBTAINED |
| EP1342552A1 (en) * | 2002-03-04 | 2003-09-10 | Eads Launch Vehicles | Method for producing a monolithic, thermostructural and double-walled composite body and composite body obtained by this method |
| WO2003074260A1 (en) * | 2002-03-04 | 2003-09-12 | Eads Space Transportation Sa | Method for making a double-walled thermostructural composite monolithic component and resulting component |
| US7503149B2 (en) | 2002-03-04 | 2009-03-17 | Eads Space Transpotation Sa | Method for making a double-walled thermostructural composite monolithic component and resulting component |
| US9289927B2 (en) | 2005-05-27 | 2016-03-22 | Airbus Operations Gmbh | Reinforcement of cellular materials |
| US8915201B2 (en) | 2007-11-21 | 2014-12-23 | Airbus Operations Gmbh | Device and method for producing a reinforced foam material |
| EP2204276A3 (en) * | 2008-09-05 | 2011-08-03 | Mike Gelbricht | Multilayer laminated material and method of manufacture |
| WO2010136362A1 (en) * | 2009-05-25 | 2010-12-02 | Airbus Operations Gmbh | Structural component and production method for a structural component |
| US8356451B2 (en) | 2009-05-25 | 2013-01-22 | Airbus Operations Gmbh | Structural component and method for producing a structural component |
| EP3257665A3 (en) * | 2016-05-25 | 2018-05-02 | Airbus Operations GmbH | Repair concept comprising pre-impregnated pinned foam core for sandwich structural components |
| CN109195779A (en) * | 2016-05-25 | 2019-01-11 | 巴斯夫欧洲公司 | Fibre-reinforced foamed material |
| US10611102B2 (en) | 2016-05-25 | 2020-04-07 | Airbus Operations Gmbh | Repair concept comprising pre-impregnated pinned foam core for sandwich structural components |
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