WO2018077791A1 - Système et procédé de production d'une préforme fibreuse - Google Patents

Système et procédé de production d'une préforme fibreuse Download PDF

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Publication number
WO2018077791A1
WO2018077791A1 PCT/EP2017/076982 EP2017076982W WO2018077791A1 WO 2018077791 A1 WO2018077791 A1 WO 2018077791A1 EP 2017076982 W EP2017076982 W EP 2017076982W WO 2018077791 A1 WO2018077791 A1 WO 2018077791A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber material
web
belt
section
forming
Prior art date
Application number
PCT/EP2017/076982
Other languages
German (de)
English (en)
Inventor
Alfred Tempel
Henrik Borgwardt
Arne Stahl
Original Assignee
Deutsches Zentrum für Luft- und Raumfahrt e.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Deutsches Zentrum für Luft- und Raumfahrt e.V. filed Critical Deutsches Zentrum für Luft- und Raumfahrt e.V.
Publication of WO2018077791A1 publication Critical patent/WO2018077791A1/fr

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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
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B11/00—Making preforms
    • B29B11/14—Making preforms characterised by structure or composition
    • B29B11/16—Making preforms characterised by structure or composition comprising fillers or reinforcement
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/02—Bending or folding
    • B29C53/04—Bending or folding of plates or sheets
    • B29C53/043—Bending or folding of plates or sheets using rolls or endless belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0003—Producing profiled members, e.g. beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0003—Producing profiled members, e.g. beams
    • B29D99/0007—Producing profiled members, e.g. beams having a variable cross-section
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0872—Prepregs

Definitions

  • the invention relates to a system and a method for producing a Faserprre- form of a flat fiber material of a fiber composite, wherein from the Faserpreform by curing a infused into the fiber material of the Faserpreform matrix material, a fiber composite component is to be produced or to be produced. Due to the particularly advantageous property, with a relatively low weight in at least one direction to have a very high rigidity and strength, fiber composite components are suitable for a variety of applications. In the process, such fiber composite components are increasingly being used for load-bearing structures in the vehicle, aircraft and space sector in order to make better use of the lightweight construction potential.
  • Fiber composite components are produced from a fiber composite material, wherein a fiber composite material usually has two essential components: a) A fiber material with reinforcing fibers and
  • the matrix material of the fiber composite material is thereby infused into the fiber material of the fiber composite material and cured by applying temperature, whereby an integral component of matrix material and fiber material is formed.
  • the fibers of the fiber material are forced in their predetermined direction and thus give the component in the fiber direction the corresponding properties.
  • the production of more complex components places high demands on the manual skills of the employees, since the fiber material has to be draped into the corresponding component shape depending on requirements, which may be problematic in view of the anisotropic properties of the fiber material depending on the complexity of the component shape.
  • This relates in particular to the production of three-dimensional profiles which, depending on the application, may have curvatures and different profile shapes and geometries over the entire length.
  • the device has a displacement device which has at least two rotating, spaced apart in the rolling direction rolling body, between which the fiber material is guided along, wherein by a control device different rotational speeds of the rolling elements are adjustable, causing a shearing of the fibers of the fiber material to form the curvature becomes.
  • DE 10 2008 032 574 A1 discloses an apparatus for producing fiber-reinforced components, in which a draping device is provided on a base frame with which the fiber webs can be draped by attaching a vacuum to the mandrel.
  • a draping device is provided on a base frame with which the fiber webs can be draped by attaching a vacuum to the mandrel.
  • this type of forced deformation of the fiber fabric has the disadvantage that here a defined and reproducible Verschans the fiber can not be guaranteed.
  • due to friction on the mandrel in the forced drape of the fiber fabric may cause the fiber material is damaged, which greatly affects the stability of the later component.
  • Another disadvantage of such devices for shearing or forming / draping fiber material is that the component shape to be produced is determined by the arrangement of the system or the device. Especially in the production of fiber profiles creates a limited to the cross section of the fiber profile construction, which only allows the production of the respective profile. For a change in the cross section of the fiber profile or small adjustments of the profile geometry (for example, changes in the web or web width, changing the angle between the web and belt) costly changes to the design are necessary if they are even possible in the existing space. This results in high set-up times, which lead to higher component costs and lower component throughput.
  • a further problem in particular of continuously guided systems is the fact that the profile geometry of the fiber preform to be produced does not occur during the continuous mixing or during the continuous conveying of the fiber material through the system can be changed because the forming process for the adjustment would have to be interrupted.
  • Components that include a change in the base cross-section (for example, from a C-profile to a Z-profile) along its longitudinal axis are not possible with the systems of the prior art.
  • a plant for producing a Faserpreform of a flat fiber material of a fiber composite material wherein from the Faserpreform by curing a infused into the fiber material of the Faserpreform matrix material, a fiber composite component can be produced.
  • the Faserpreform is a reshaped fiber material having a predetermined profile cross section, for example, an L, C, or Z profile.
  • the fiber preform is a three-dimensionally transformed fiber material.
  • the fiber material may preferably be dry fiber material, which is infused with matrix material in a later process step and then cured to produce the fiber composite component.
  • the fiber material is preimpregnated fiber material (so-called prepregs), wherein the matrix material already contains the fiber material at the time of forming.
  • the plant has generically a conveyor on to continuously transport the fiber material in a conveying direction or to promote.
  • the conveyor may for example comprise rollers or rollers on which the fiber material is guided along contact or rests, so that a conveying of the fiber material is effected by a frictional connection between the fiber material and elements of the conveyor.
  • the system further comprises a forming device with which the flat fiber material is formed into the predetermined profile shape of the fiber preform to be produced.
  • the forming device has at least one forming element, on which the fiber material is guided along contact-related, in order to transform the flat fiber material into the Faserpreform.
  • the forming element of the forming device is designed and structurally arranged in the system such that a belt section is angled away from a web section of the fiber material along the conveying direction to form a predetermined angle between belt section and web section.
  • the belt section designates an edge region of the flat, in particular elongate, fiber material and adjoins one of the edge sides opposite side to a web portion of the Faserpreform.
  • an angle is formed between the flat web portion and the flat belt portion, which has approximately 90 degrees, for example, in a classic C-profile or L-profile.
  • the at least one forming element of the forming device is mounted so as to be movable concentrically around the fiber material such that the angle between the belt section and the web section can be variably adjusted by a concentric movement of the at least one forming element.
  • a concentric movement of the deformation element is understood to mean a circular movement on a circular path which takes place about a center or pivot point which, starting from the deformation element, lies in the direction of the fiber material.
  • the fulcrum of the concentric movement of the at least one deformation element can also be understood as an axis of rotation, which is aligned axially or coaxially to the conveying direction with respect to the position in the region of the Umformiatas. Due to the concentric movement of the forming element, wherein the concentric movement takes place on a circular path which is running around the fiber material, the angle between the belt portion and the web portion can be adjusted, in which the forming element is moved in this circular path.
  • the contact surface on which the fiber material contacts the forming element in contact with the angle of the belt section with respect to the remaining flat fiber material, in particular with respect to the web section changes, so that by such a change of the contact surface in relation to the web section the angle between the belt portion to be bent and the remaining web portion can be adjusted.
  • the system has a control device which is connected to an actuator for concentrically moving the forming element, wherein the control device is set up such that it controls the actuator for carrying out a concentric movement.
  • the actuator is controlled with the aid of the control device so that the forming element performs a concentric movement, which corresponds to a predetermined angle change between the belt portion and web portion.
  • the speed of the movement depends in particular on the conveying speed and the angle change over the length of the Faserpreform.
  • the forming device has a guide system which has at least one circularly curved guide section, which is arranged partially circumferentially around the belt section of the fiber material and on which the at least one forming element is mounted concentrically movable.
  • the Guide system can be in the guide section, for example, a rail system on which the forming element is movably mounted so that it can be moved along the curved guide portion on a circular arc defined by the curved guide section.
  • the forming element is given a concentric circular motion, so that the angle between the belt portion and the web portion can be adjusted.
  • the circularly curved guide section of the guide system does not necessarily have to be circumferential around the entire fiber material, but may for example be semicircular or less or more than semicircular.
  • the above-described forming element is a first forming element, which is provided to the Anwinkein a first belt portion of the web portion.
  • the forming device has in addition to this at least one forming element at least one further second forming element, on which the fiber material is also guided along contact and the Abwinkein a second Gurtabiteses, which is opposite to the first Gurtabrough and between which the web portion is provided, from the web portion of the fiber material along the Conveying direction is formed to form a predetermined angle between the second belt portion and the web portion.
  • the second forming element is also movably mounted in such a way that it can be moved concentrically around the fiber material so that the angle between the second belt section and the web section can be adjusted by a concentric movement of the at least second forming element.
  • a Faserpreform with a profile cross-section in the middle of a web portion is provided, from which in the direction of a first edge portion, a first belt portion and in the direction of a second edge portion, a second belt portion is formed by Anwinkein using the forming elements.
  • Both the forming element for the first belt portion and the forming element for the second belt portion are movably mounted so that they are concentric around the fiber material around, so each individually the angle between the first belt portion and the web portion and the angle between the second belt portion and the web portion is adjustable.
  • a guide system which, in addition to the first circularly curved guide section, has at least one second circularly curved guide section, which likewise partially surrounds the second belt section of the fiber material and on which the at least one second deformation element is movably mounted in such a way Movement of the at least one second deformation element along the second curved guide portion of the guide system, the concentric movement of the at least one second deformation element is effected to adjust the angle between the second belt portion and the web portion.
  • the guide system has a guide frame on which the first and / or the second circular curved guide section is mounted, so that the first and / or the second circular curved guide section relative to the fiber material can be moved translationally.
  • the first and / or the second circularly curved guide section are mounted so movable relative to the fiber material, that the width of the web portion is adjustable by a relative movement of the first and / or second guide portion.
  • the translational movement of the respective guide section is preferably transverse to the conveying direction, so that the curved guide section can be moved in the direction of the fiber material or in the direction away from the fiber material.
  • a translational movement of the curved guide elements in the direction of the fiber material causes the corresponding belt section to be enlarged and the web section to be reduced. Consequently, a translational movement of the bent guide portion away from the fiber material leads to a reduction of the corresponding Gurtab- cut and to an enlargement of the web portion.
  • each belt section can be individually adjusted in its width, without the system having to be structurally changed for this purpose.
  • the rolling range of the fiber material ie the transition from web portion to the respective belt portion, always remains at the same location with a change in angle, which is particularly gentle on the material.
  • At least one of the forming elements is a pair of rolls, which has two respective rollers rotating in opposite directions to one another, between which the fiber material can be passed. It is conceivable that one or both rollers of such a pair of rollers are driven, so that such a pair of rollers is also part of a conveyor for conveying the fiber material at the same time.
  • a displacement device which is designed for shearing the fibers of the fiber material to form a curvature in the fiber preform to be produced.
  • a scarfing device can be designed, for example, as provided in DE 10 2012 101 706 A1, to the content of which reference is made for full content.
  • a further pair of rolls is provided, which is arranged spaced apart from the pair of rolls as forming element, wherein on the rolls of the rolling pairs each different rotational speeds are set, so that the fiber material between the Roll pairs is pardoned.
  • Figure 1 shows a perspective view of a section of the system 10 for producing a Faserpreform of a flat fiber material of a fiber composite material.
  • the sheet-like fiber material is supplied to the system 10 via a fiber material storage (not shown) and conveyed by the conveyor 20 in a conveying direction.
  • the conveying direction of the conveyor 20 is due to the perspective view such that it leads out obliquely from the viewing plane.
  • the conveyor 20 has a pair of rollers 21, which consists of two rollers 22a and 22b.
  • the rollers 22a and 22b of the roller pair 21 are arranged so that the flat fiber material between the two rollers 22a and 22b can be passed.
  • the two rollers 22a and 22b rotate in opposite directions to the respective opposite roller, wherein one of the rollers or both rollers can be driven and thus actively promote the fiber material in the conveying direction or push.
  • the system 10 further comprises the forming device according to the invention, which has two Umformelennente 31 and 32, which are each formed to the Anwinkein a Gurtabitess of a web portion of the fiber material along the conveying direction to form a predetermined angle between the respective belt portion and the web portion.
  • the forming elements 31 and 32 of the forming device 30 are formed in the embodiment of Figure 1 in the form of pairs of rolling elements, so that each forming element 31 comprises two rollers or rolling elements, between which the fiber material, more precisely, the respective belt portion of the fiber material is passed.
  • each forming element 31 comprises two rollers or rolling elements, between which the fiber material, more precisely, the respective belt portion of the fiber material is passed.
  • an angle is formed between the running surface of the rollers of the forming elements 31 and 32 with respect to the running surface of the rollers of the conveyor 20, which angle leads to the respective angle between web section and belt section.
  • the forming elements 31 and 32 are arranged on a guide system 33, which has two circular curved guide sections 34 and 35.
  • the first deformable element 31 is arranged on the first curved guide section 34, while the second deformable element 32 is arranged on the second circularly curved guide section 35.
  • the forming elements 31 and 32 are movably mounted on their respective circular curved guide sections 34 and 35, so that during a movement along the respectively curved curved guide section 34, 35, the respective forming element 31, 32 carries out a concentric movement, whose rotation or center in Inside of the circle formed by the two guide portions 34 and 35 is located.
  • the angle between the belt portion and the web portion can be varied, as this the angle between the running surfaces of the rollers of the conveyor 20 and the running surfaces of the rollers of the respective Umformianos 31, 32 is variable.
  • the circularly curved guide sections 34, 35 are arranged on a guide frame 36, so that the circularly curved guide sections can be moved in translation.
  • the translational movement direction of the bent guide sections 34, 35 on the guide frame 36 is parallel to the running surface of the conveyor 20, which in the embodiment of Figure 1 leads to the fact that the translational movement direction is in the plane of the web portion. It is therefore fundamentally advantageous if the system 10 is designed such that the circularly curved guide sections 34, 35 are arranged so that they can move in translation on the guide frame such that the direction of movement of the translatory movement of the circularly curved guide sections lies in the plane of the web section. whereby the width of the web portion is changeable (see Figure 3).
  • the forming elements 31, 32 are arranged at their respective circular curved guide portion 34, 35 each via a quick-release device fixed to the respective circularly curved guide portion 34, 35.
  • a quick-release device fixed to the respective circularly curved guide portion 34, 35.
  • the forming elements 31, 32 are arranged on their respective curved guide section 34, 35 concentrically movable by means of a servo motor (actuator), with the aid of a control unit (not shown), the servo motors are controlled such that the respective forming element 31, 32 carries out a concentric movement.
  • a servo motor actuator
  • the servo motors are controlled such that the respective forming element 31, 32 carries out a concentric movement.
  • Another advantage of the automated design is that the angle can also be changed during the forming process, so that Faserprre forms can be produced with profiles that have an over the entire length changing angle between belt portion and web portion.
  • the circularly curved guide sections 34, 35 are likewise arranged on the guide frame 36 via servo motors, so that the width of the web section can also be adjusted automatically by the control unit by the translational movement of the circularly curved guide sections 34, 35 , Again, it is conceivable that the control unit performs during the continuous feeding of the fiber material and during the continuous forming of the fiber material, a translational movement of the circularly curved guide portions 34, 35, so that over the entire length of Faserpreform time varying web width.
  • Figure 2 shows in a plan view of the system 10 in a configuration for the production of C-profiles with a narrow web portion.
  • the two forming elements 31, 32 were concentrically moved along their guide section 34, 35 bent in each case in a circle in such a way that the running surfaces of the rolls of the respective forming elements 31, 32 are parallel within tolerances and, moreover, a right angle with respect to the running surfaces of the rolls of the conveyor 20 define.
  • C-profiles can be made of flat fiber material, wherein the angle between the belt portion and web portion has substantially 90 degrees.
  • the produced Faserpreform 40 in Figure 2 in this case has a first belt portion 41 which is formed by the first forming element 31, while the second belt portion 42 is formed by the second forming element 32.
  • the web section 43 which is narrow in the exemplary embodiment of FIG. 2, is located between the first belt section 41 and the second belt section 42.
  • FIG. 3 a configuration can be seen in which the circularly bent guide portions 34, 35 have been translationally moved so as to be moved away from each other, thereby increasing the width of the land portions 43.
  • C-profiles can be produced, which have a wide web section 43 in relation to their belt sections 41, 42.
  • Figure 4 shows an embodiment of a configuration with which L-profiles can be produced.
  • L-profile In the case of an L-profile, one belt section is angled over the web section at an angle greater than 0, while the other, opposite belt section is angled at an angle of 0 degrees so that the web section and belt section are parallel.
  • the first belt section 41 is quasi an extension of the web section 43, since there are 0 degrees angles between belt section 41 and web section 43.
  • the first forming element 31 has been moved concentrically so that the running surfaces of the rollers of the first forming element 31 are parallel to the rollers of the conveyor 20.
  • the second deformation element 32 angles the second belt portion 42 at an angle of 90 degrees relative to the web portion 43, so that a classic L-profile shape is formed.
  • FIG. 5 shows a configuration of a Z-profile in which an angle of 270 degrees has been set between the first belt section 41 and the web section 43, while an angle of 90 degrees is applied between the second belt section 42 and the web section 43.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Nonwoven Fabrics (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

L'invention concerne un système de production d'une préforme fibreuse à partir d'un matériau fibreux plan d'un matériau composite renforcé par des fibres, un élément composite renforcé par des fibres pouvant être produit à partir de la préforme fibreuse par durcissement d'un matériau de matrice injecté dans le matériau fibreux de la préforme fibreuse, le système comprenant un dispositif de transport qui est conçu pour le transport en continu du matériau fibreux dans une direction de transport, et le système ayant un dispositif de façonnage qui est conçu pour, pendant le transport en continu du matériau fibreux, plier une partie membrure par rapport à une partie âme du matériau fibreux le long de la direction de transport en formant un angle prédéfini entre la partie membrure et la partie âme au moyen d'au moins un élément de façonnage le long duquel le matériau fibreux est guidé avec contact, ledit au moins un élément de façonnage étant monté mobile concentriquement autour du matériau fibreux de telle sorte que l'angle entre la partie membrure et la partie âme puisse être réglé par un déplacement concentrique dudit au moins un élément de façonnage.
PCT/EP2017/076982 2016-10-24 2017-10-23 Système et procédé de production d'une préforme fibreuse WO2018077791A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016120197.9 2016-10-24
DE102016120197.9A DE102016120197A1 (de) 2016-10-24 2016-10-24 Anlage und Verfahren zur Herstellung einer Faserpreform

Publications (1)

Publication Number Publication Date
WO2018077791A1 true WO2018077791A1 (fr) 2018-05-03

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DE (1) DE102016120197A1 (fr)
FR (1) FR3057798B1 (fr)
WO (1) WO2018077791A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3081369B1 (fr) * 2018-05-28 2020-05-08 Stelia Aerospace Dispositif et procede de mise en forme d'une piece d'ebauche pour la formation d'une piece thermoplastique structurelle
CN113043528B (zh) * 2021-02-09 2022-02-18 博戈橡胶塑料（株洲）有限公司 一种控制臂成型方法及控制臂

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013706A1 (fr) * 1991-01-31 1992-08-20 E.I. Du Pont De Nemours And Company Procede de formage en continu pour la production de structures composites en resine renforcees par des fibres
WO2004098886A1 (fr) * 2003-05-07 2004-11-18 Lamera Ab Pieces usinees a partir de structures composites en couches, et leur procede de fabrication
DE102008028441A1 (de) * 2008-06-17 2009-12-31 Eads Deutschland Gmbh Verfahren und Vorrichtung zur Herstellung eines ringförmigen Vorformlings aus Fasermaterialhalbzeug, sowie Verwendung derartiger Verfahren und Vorrichtungen
DE102008032574A1 (de) 2008-07-11 2010-01-14 Brötje-Automation GmbH Vorrichtung zur Verwendung bei der Herstellung faserverstärkter Bauteile
US20120234489A1 (en) * 2011-03-16 2012-09-20 Airbus Operations Sas Process for manufacturing a part made of composite material that comprises at least one radius of curvature
DE102012101706A1 (de) 2012-03-01 2013-09-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Gekrümmte Preform

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2722145B1 (fr) * 2012-10-17 2016-02-24 Airbus Operations GmbH Procédé et dispositif de fabrication d'une préforme de textile sèche

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013706A1 (fr) * 1991-01-31 1992-08-20 E.I. Du Pont De Nemours And Company Procede de formage en continu pour la production de structures composites en resine renforcees par des fibres
WO2004098886A1 (fr) * 2003-05-07 2004-11-18 Lamera Ab Pieces usinees a partir de structures composites en couches, et leur procede de fabrication
DE102008028441A1 (de) * 2008-06-17 2009-12-31 Eads Deutschland Gmbh Verfahren und Vorrichtung zur Herstellung eines ringförmigen Vorformlings aus Fasermaterialhalbzeug, sowie Verwendung derartiger Verfahren und Vorrichtungen
DE102008032574A1 (de) 2008-07-11 2010-01-14 Brötje-Automation GmbH Vorrichtung zur Verwendung bei der Herstellung faserverstärkter Bauteile
US20120234489A1 (en) * 2011-03-16 2012-09-20 Airbus Operations Sas Process for manufacturing a part made of composite material that comprises at least one radius of curvature
DE102012101706A1 (de) 2012-03-01 2013-09-05 Deutsches Zentrum für Luft- und Raumfahrt e.V. Gekrümmte Preform

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DE102016120197A1 (de) 2018-04-26
FR3057798B1 (fr) 2020-12-04
FR3057798A1 (fr) 2018-04-27

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