DE102011077287B4 - fiber composite component - Google Patents
fiber composite component Download PDFInfo
- Publication number
- DE102011077287B4 DE102011077287B4 DE102011077287.1A DE102011077287A DE102011077287B4 DE 102011077287 B4 DE102011077287 B4 DE 102011077287B4 DE 102011077287 A DE102011077287 A DE 102011077287A DE 102011077287 B4 DE102011077287 B4 DE 102011077287B4
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- Germany
- Prior art keywords
- fiber
- fiber composite
- component
- embroidery
- composite component
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- 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.)
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- 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
- B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
- B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
- B29C70/207—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration arranged in parallel planes of fibres crossing at substantial angles
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- 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
- B29C70/22—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 two directions forming a two dimensional structure
- B29C70/222—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 two directions forming a two dimensional structure the structure being shaped to form a three dimensional configuration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2307/00—Use of elements other than metals as reinforcement
- B29K2307/04—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2309/00—Use of inorganic materials not provided for in groups B29K2303/00 - B29K2307/00, as reinforcement
- B29K2309/08—Glass
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Woven Fabrics (AREA)
Abstract
Faserverbundbauteil, bestehend aus zumindest einem vorwiegend in einer Richtung gekrümmten und einem mit diesem lastfest verbundenen, mehrdimensional gekrümmten Bauteilabschnitt, dadurch gekennzeichnet, dass die Faserstruktur des Faserverbundbauteils (1) in dem in einer Richtung gekrümmten Bauteilabschnitt (2) aus einem abwickelbaren Fasergebilde (4) und in dem mehrdimensional gekrümmten Bauteilabschnitt (3) aus einem mit dem abwickelbaren Fasergebilde gemeinsam konsolidierten, im verformten Zustand lastgerecht faserorientierten Fasergesticke (5) besteht.Fiber composite component, consisting of at least one component section curved predominantly in one direction and a multidimensionally curved component section connected thereto in a load-resistant manner, characterized in that the fiber structure of the fiber composite component (1) in the component section (2) curved in one direction consists of a fiber structure (4) that can be unwound and in the multi-dimensionally curved component section (3) consists of a fiber stick (5) which is consolidated together with the unwindable fiber structure and is fiber-oriented in the deformed state in accordance with the load.
Description
Die Erfindung bezieht sich auf ein Faserverbundbauteil, bestehend aus zumindest einem vorwiegend in einer Richtung gekrümmten und einem mit diesem lastfest verbundenen, mehrdimensional gekrümmten Bauteilabschnitt, nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a fiber composite component, consisting of at least one component section that is curved predominantly in one direction and a multidimensionally curved component section that is connected to it in a load-resistant manner, according to the preamble of patent claim 1.
Aus der
Die
Aufgabe der Erfindung ist es, ein Faserverbundbauteil der eingangs genannten Art so auszubilden, dass es auf herstellungs- und gewichtsgünstige Weise mit einer lastgerechten Faserstruktur herzustellen ist.The object of the invention is to design a fiber composite component of the type mentioned at the outset in such a way that it can be produced in a manner that is economical in terms of production and weight and has a fiber structure that is appropriate for the load.
Diese Aufgabe wird erfindungsgemäß durch das im Patentanspruch 1 gekennzeichnete Faserverbundbauteil gelöst.According to the invention, this object is achieved by the fiber composite component characterized in patent claim 1 .
Erfindungsgemäß wird die Faserstruktur fertigungstechnisch gezielt auf die geometrisch unterschiedlich komplexen Bauteilabschnitte des Faserverbundbauteils derart abgestimmt, dass sich, differenziert nach dem Krümmungsgrad der Bauteilabschnitte, mit jeweils möglichst geringem Herstellungsaufwand eine hochgradig lastgerechte Faserorientierung im fertigen Bauteil ergibt. So besteht die Faserstruktur in den einfach gekrümmten Bauteilabschnitten aus einem abwickelbaren Fasergebilde, welches, angefangen von einer unidirektionalen bis hin zu einer quasi-isotropen Faserorientierung, auf fertigungstechnisch sehr einfache Weise lastgerecht auszubilden ist, während das fertigungstechnisch aufwändigere Fasergesticke auf die komplexen 3D-Bauteilbereiche begrenzt und im 2D-Zustand so mit dem Fasermaterial belegt wird, dass sich bei der nachfolgenden räumlichen Umformung aufgrund der dabei entstehenden Faserverlagerungen ein auf die Belastungsverhältnisse des Bauteils optimal abgestimmter Faserverlauf einstellt, mit dem weiteren Aspekt, dass die Bauteilabschnitte mit ihren technologisch jeweils unterschiedlich erstellten Faserverstärkungen in einem einzigen Konsolidierungschritt, vorzugsweise im Wege des Harzinjektionsverfahrens, zu einem einstückigen Faserverbundbauteil mit einer durchgehenden Faserstruktur ohne gesonderte, gewichtserhöhende und den Kraftfluss störende Fügestellen ausgeformt werden. Das Ergebnis ist ein homogenes, abschnittsweise geometrisch komplexes Faserverbundbauteil mit einer lastgerechten Faserstruktur bei zugleich herstellungs- und gewichtsgünstiger Bauweise.According to the invention, the fiber structure is specifically tailored to the geometrically differently complex component sections of the fiber composite component in terms of production technology in such a way that, differentiated according to the degree of curvature of the component sections, a highly load-oriented fiber orientation results in the finished component with the lowest possible production effort. The fiber structure in the simply curved component sections consists of a fiber structure that can be developed, which, starting with a unidirectional up to a quasi-isotropic fiber orientation, can be produced in a very simple way in terms of production technology, while the fiber embroidery, which is more complex in terms of production technology, is limited to the complex 3D component areas and in the 2D state is covered with the fiber material in such a way that during the subsequent spatial reshaping, due to the resulting fiber displacements, a fiber course that is optimally matched to the load conditions of the component is set, with the further aspect that the component sections with their technologically different fiber reinforcements in a single consolidation step, preferably by means of the resin injection process, into a one-piece fiber composite component with a continuous fiber structure without separate, weight-increasing and the power flow st disturbing joints are formed. The result is a homogeneous, partially geometrically complex fiber composite component with a load-bearing fiber structure and at the same time a construction that is economical to manufacture and weight.
Vor allem bei einer Bauteilfertigung im Wege des Harzinjektionsverfahrens empfiehlt es sich, das Fasergesticke separat vom abwickelbaren Fasergebilde zu einem bindemittelstabilisierten Vorformling mit einer dem mehrfach gekrümmten Bauteilabschnitt entsprechenden Raumform und Faserorientierung umzuformen und den Vorformling dann gemeinsam mit dem abwickelbaren Fasergebilde zum fertigen Faserverbundbauteil zu konsolidieren, um Faserdesorientierungen am Gesticke beim Einschießen der Faserverbundmatrix in das Formwerkzeug zu verhindern. Vorzugsweise werden die Verstärkungsfasern auf dem Gesticke durch Nähfäden fixiert, die aus einem sich in der Faserverbundmatrix auflösenden Material bestehen. Aus Gründen einer guten räumlichen Verformbarkeit des Gestickes besteht der Stickgrund zweckmäßigerweise aus einem drapierfähigen Material, nämlich bevorzugt aus einem Glasfasergewebe oder -vlies, so dass auch der Stickgrund zur Lastfestigkeit der Faserverbundstruktur beiträgt.Especially when manufacturing a component using the resin injection process, it is advisable to reshape the fiber embroidery separately from the unwindable fiber structure into a binder-stabilized preform with a three-dimensional shape and fiber orientation that corresponds to the multiply curved component section and then to consolidate the preform together with the unwindable fiber structure to form the finished fiber composite component To prevent fiber disorientation on the embroidery when shooting the fiber composite matrix into the mold. The reinforcing fibers are preferably fixed on the embroidery by sewing threads, which consist of a material that dissolves in the fiber composite matrix. For reasons of good spatial deformability of the embroidery, the embroidery base is expediently made of a drapable material, namely preferably a glass fiber fabric or fleece, so that the embroidery base also contributes to the load-bearing capacity of the fiber composite structure.
Die Erfindung wird nunmehr an Hand eines Ausführungsbeispiels in Verbindung mit den Zeichnungen näher erläutert. Es zeigen in stark schematisierter Darstellung:
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1 eine teilweise geschnittene Darstellung eines erfindungsgemäß ausgebildeten Faserverbundbauteils; -
2 das abwickelbare Fasergebilde im mittleren, hohlrohrförmigen Bauteilabschnitt; und -
3a, b das Fasergesticke für die komplex gekrümmten, endseitigen Bauteilabschnitte im planaren 2D-Zustand (3a) und als Vorformling (3b) .
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1 a partially sectioned view of a fiber composite component designed according to the invention; -
2 the unwindable fiber structure in the central, hollow tubular component section; and -
3a, b the fiber embroidery for the complex curved, end-side component sections in the planar 2D state (3a) and as a preform (3b) .
Das in
Aus Gründen eines lastgerechten Faserverlaufs bei zugleich möglichst einfacher Herstellungsweise wird die Faserstruktur des Bauteils 1 zweiteilig in unterschiedlichen Fertigungstechniken z.B. aus trockenen Carbonfasern erstellt. So wird die Faserstruktur im mittleren Bauteilabschnitt 2 gemäß
Das Fasergesticke 5 wird in einem Zwischenschritt zu einem bindemittelstabilisierten Vorformling 8 mit einer dem mehrfach gekrümmten Bauteilabschnitt 3 entsprechenden Raumform umgeformt, wobei die Verstärkungsfasern 7 des Gestickes 5 den angestrebten, lastgerechten Faserverlauf des fertigen Bauteils 1 einnehmen. Durch den Zwischenschritt über den bindemittelstabilisierten Vorformling 8 wird sichergestellt, dass es bei der Fertigstellung des Bauteils 1, wenn die Faserverbundmatrix im Wege der Harzinjektion in das Formwerkzeug einschießt, nicht zu einer Fehlorientierung der Verstärkungsfasern 7 auf dem Gesticke 5 kommt.In an intermediate step, the fiber embroidery 5 is formed into a binder-stabilized
Der Vorformling 8 und das abwickelbare Fasergebilde 4 werden gemeinsam in das Formwerkzeug eingelegt, wobei sie sich - wie aus
Anstatt als zylindrisches Hohlrohr kann der Bauteilabschnitt 2 auch als anders gestalteter, abwickelbarer Formkörper ausgebildet und sogar in Richtung seiner Symmetrieachse schwach gekrümmt sein.Instead of being a cylindrical hollow tube, the
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE102011077287.1A DE102011077287B4 (en) | 2011-06-09 | 2011-06-09 | fiber composite component |
Applications Claiming Priority (1)
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DE102011077287.1A DE102011077287B4 (en) | 2011-06-09 | 2011-06-09 | fiber composite component |
Publications (2)
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DE102011077287A1 DE102011077287A1 (en) | 2012-12-13 |
DE102011077287B4 true DE102011077287B4 (en) | 2022-06-09 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3071765B1 (en) | 2017-10-03 | 2020-11-20 | Safran Ceram | COMPOSITE MATERIAL REALIZATION OF A FLOW MIXER LOBE STRUCTURE |
EP3608093B1 (en) | 2018-08-10 | 2024-04-17 | Crompton Technology Group Limited | Composite connector and method of manufacturing the same |
EP3608095A1 (en) | 2018-08-10 | 2020-02-12 | Crompton Technology Group Limited | Composite connectors and methods of manufacturing the same |
EP3608092B1 (en) * | 2018-08-10 | 2023-06-28 | Crompton Technology Group Limited | Composite connector and method of manufacturing the same |
EP3805623B1 (en) | 2019-10-07 | 2023-11-29 | Crompton Technology Group Limited | Fibre reinforced polymer composite pipes and method of making thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4214636A1 (en) | 1992-04-26 | 1993-10-28 | Inst Polymerforschung Dresden | Formable, multiaxial reinforcement structure |
DE102005034393A1 (en) | 2005-07-22 | 2007-02-01 | Airbus Deutschland Gmbh | Process for the production of single or multilayer fiber preforms in the TFP process |
DE102008001989A1 (en) | 2008-05-27 | 2009-12-03 | Zf Friedrichshafen Ag | Torsion beam axle i.e. rear axle, for motor vehicle, has longitudinal support and transverse support manufactured as component, where axle is made of fiber composite material and bending and torsion rigidity of axle is optimized |
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2011
- 2011-06-09 DE DE102011077287.1A patent/DE102011077287B4/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4214636A1 (en) | 1992-04-26 | 1993-10-28 | Inst Polymerforschung Dresden | Formable, multiaxial reinforcement structure |
DE102005034393A1 (en) | 2005-07-22 | 2007-02-01 | Airbus Deutschland Gmbh | Process for the production of single or multilayer fiber preforms in the TFP process |
DE102008001989A1 (en) | 2008-05-27 | 2009-12-03 | Zf Friedrichshafen Ag | Torsion beam axle i.e. rear axle, for motor vehicle, has longitudinal support and transverse support manufactured as component, where axle is made of fiber composite material and bending and torsion rigidity of axle is optimized |
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DE102011077287A1 (en) | 2012-12-13 |
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