WO1991014564A1 - Chambre d'evacuation - Google Patents

Chambre d'evacuation Download PDF

Info

Publication number
WO1991014564A1
WO1991014564A1 PCT/GB1991/000421 GB9100421W WO9114564A1 WO 1991014564 A1 WO1991014564 A1 WO 1991014564A1 GB 9100421 W GB9100421 W GB 9100421W WO 9114564 A1 WO9114564 A1 WO 9114564A1
Authority
WO
WIPO (PCT)
Prior art keywords
evacuation
valve
chamber
valve body
evacuation chamber
Prior art date
Application number
PCT/GB1991/000421
Other languages
English (en)
Inventor
Robert Samuel Wilson
Mark Anthony Braniff
Original Assignee
Short Brothers Plc
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 Short Brothers Plc filed Critical Short Brothers Plc
Publication of WO1991014564A1 publication Critical patent/WO1991014564A1/fr

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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3607—Moulds for making articles of definite length, i.e. discrete articles with sealing means or the like
    • 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/10—Moulds or cores; Details thereof or accessories therefor with incorporated venting means
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • 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
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B29C43/3642—Bags, bleeder sheets or cauls for isostatic pressing
    • B29C2043/3644—Vacuum bags; Details thereof, e.g. fixing or clamping
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B29C43/12—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies using bags surrounding the moulding material or using membranes contacting the moulding material

Definitions

  • the present invention relates to an evacuation chamber by which is meant a chamber which can be at least partly evacuated.
  • the invention is particularly concerned with, but not restricted to, an evacuation chamber for manufacturing a composite material, such as for example a composite material which is suitable for forming an outer surface material of an aircraft.
  • material includes any suitable component or structure, such as for example a laminate joint, depending on the application of the invention.
  • a previously proposed composite material has been manufactured by embedding high strength fibres having a high modulus of elasticity within a homogeneous matrix.
  • the fibres are made of carbon, aramid or boron, and the matrix can be formed of material such as an epoxy, bismalemide or polyimide resin.
  • the fibres are supplied in uni-directional, woven or fibrous mat format which is pre-impregnated with slightly cured resin to form an intermediate fabric material.
  • This intermediate fabric material is flexible and tacky, and the positions of the fibre elements therein are not fixed.
  • Fig 1 of the accompanying drawings is a diagrammatic illustration of the manufacture of a composite material.
  • Fig 1 layers of intermediate fabric material are assembled one upon the other in a mould tool
  • the stack 4 is covered by a vacuum bag which makes an airtight seal with the mould tool to so as to form an evacuation chamber.
  • This vacuum bag is in the form of a flexible membrane which is capable of withstanding high compression forces at high temperature.
  • the stack 4 is then compressed and heated to cure the resin and form a composite laminate material 6 illustrated on the right-hand side of Fig 1. Air and volatiles are removed from the evacuation chamber by means of an evacuation valve.
  • Fig 2 is a sectional elevation of an evacuation chamber including one conventional evacuation valve installation.
  • Fig 3 is an exploded view (partly in section) of the evacuation valve of Figure 2. Referring to Figures 2 and 3, a stack 8 of layers of intermediate fabric material is placed in an evacuation chamber including a base plate 10.
  • a vacuum bag 12 is placed over the base plate 10 and an airtight seal is made between the base plate 10 and the vacuum bag 12 by means of a sealer strip 14 located at the periphery of the vacuum bag 12 where it contacts the base plate 10.
  • An edge breather 16 is located on the base plate 10, and a surface breather 18 and extra surface breather 20, both of plate form, are located near the upper portion of the vacuum bag 12.
  • the surface breather 18 has an area slightly less than the area of the top of the vacuum bag 12.
  • the space inside the vacuum bag 12 is evacuated by withdrawing air through an evacuation valve 22 located near one edge of the vacuum bag 12.
  • the edge breather 16 and the surface breathers 18 and 20 assist in ensuring that air is withdrawn from substantially the entire region covered by the vacuum bag 12, and that the vacuum bag 12 does not wrinkle or distort unduly during evacuation.
  • the evacuation valve 22 includes a threaded shaft 24 which extends from a circular base member 26 having a raised upper face.
  • a pressure plate 28 is located on the shaft 24 to sit on the base member 26 over a gasket 30.
  • a locking ring 32 and a quick release coupling 34 are screwed onto the shaft 24, and a vent passage extends through the shaft and the coupling.
  • a compression ring 36 extends downwardly from the lower face of the pressure plate 28.
  • the vacuum bag 12 is slightly stretched over the quick release coupling 34 to leave a circular stretch mark in the vacuum bag 12.
  • the bag in then pinched at the region of the stretch mark, and the bag is cut to form a hole of approximately the size of the threaded shaft 24.
  • this hole need not be circular its largest diameter must be less than the inside diameter of the compression ring 36 on the pressure plate 28. This hole in the vacuum bag 12 must be large enough to slip over the threaded shaft 24 without the need to stretch the vacuum bag 12.
  • the threaded shaft 24 is located in the newly cut hole in the vacuum bag 12, any wrinkles in the bag are smoothed out, the pressure plate 28 is mounted on the threaded shaft 24 and the locking ring 32 is screwed onto the threaded shaft 24 to secure the shaft 24 to the vacuum bag 12 with the base member 26 sitting on the extra surface breather 18.
  • the quick release coupling 34 is then screwed on to the upper region of the threaded shaft 24.
  • the vacuum seal has to rely on the pressure between the pressure plate 28 and the gasket 30:-
  • Errors can easily arise in assembling the component parts of the vacuum valve, and wrinkling and twisting of the vacuum bag 12 can easily occur during the tightening of the vacuum bag.
  • Fig 4 is a sectional elevation of another previously known evacuation valve installation.
  • the evacuation chamber of Fig 4 is substantially similar to the evacuation chamber of Fig 2, and for clarity corresponding components will be given the same reference numerals.
  • a vacuum bag 12 is secured on a base plate 10 by a sealer strip 14 so as to define an evacuation chamber.
  • An evacuation valve 22 is connected to the base plate 10 to enable air to be evacuated from the evacuation chamber through a passage 38 in the base plate 10.
  • a fine mesh gauze 40 is secured to the base plate 10 to cover the passage 38 to prevent the vacuum bag 12 from bridging over the region of the passage 38.
  • the evacuation valve 22 is a permanent installation, and it is not possible to re-position the evacuation valve in the base plate 10;-
  • an evacuation chamber comprising a base plate, a vacuum cover located over the base plate, an edge sealant providing an airtight seal between the base plate and the vacuum cover at their periphery, a breather located in the chamber, and an evacuation valve to enable the chamber to be evacuated
  • the valve includes a valve body having a vent passage extending therethrough from an inner vent hole to an outer vent hole, and a valve coupling communicating with the outer vent hole, and the valve body is located between opposed portions of the edge sealant at the periphery of the chamber between the vacuum cover and the base plate with the coupling outside the chamber.
  • breasther is meant a material to assist in ensuring that air is withdrawn from the evacuation chamber during evacuation.
  • the breather comprises a first portion located beneath at least the inner part of the valve body, and a second portion covering the inner vent hole.
  • the first portion may be an edge breather in the form of an edge strip extending around the base plate at its periphery, and the second portion may be a surface breather of plate form having an area slightly less than the area of the top of the vacuum bag.
  • the inner vent hole may be covered with mesh material to reduce the risk of blockage of a vent passage.
  • Fig 5 is a perspective view of one evacuation valve of the invention.
  • Fig 6 is a perspective cut-way view of an evacuation chamber of the invention including the valve of Fig 5;
  • Fig 7 is a side elevation, partly in section, of an evacuation chamber of the invention including another evacuation valve;
  • Fig 8 is a perspective view of another evacuation valve of the invention.
  • Fig 9 is a perspective view of a further evacuation valve of the invention.
  • an evacuation valve includes a quick-release coupling 40 extending from a valve body 42.
  • Five passages extend through the valve body 42 from inner vent holes 43, in the upper portion 52 of the inner side of the body 42. These five passages communicate with a vent passage extending through the coupling 40.
  • the valve body 42 is generally trapezoidal in cross-section with generally flat upper and lower surfaces 44 and 46. Recessed portions 48 and 50 extend across these upper and lower surfaces 44 and 46 respectively.
  • the upper portion 52 of the inner side of the valve body 42 is connected to the coupling 40 by the five passages through the valve body 42.
  • a wire mesh 54 is secured to the upper portion 52 to cover the inner vent holes 43. This wire mesh 54 is sufficiently fine to prevent the vacuum bag from entering the vent passages and causing blockage.
  • the evacuation valve is placed on a base plate 56 with the upright outer side 58 of the valve body 42 flush with the edge of the base plate 56.
  • the outer part of an edge breather strip 60 extends beneath the inner part of the valve body lower surface 44 and the outer part of a surface breather 62 of plate form rests on the inner side upper portion 52, and the inner vent holes 43.
  • a lower edge sealant strip 64 extends around the periphery of the base plate 56, and passes through the recessed portion 50 the valve body lower surface 46.
  • An upper edge sealant strip 66 is located in the recessed portion 48 in the valve body upper surface 44, and extends along the opposite inclined sides 68 and 70 of the valve body 42 so as to rest on the lower edge sealant strip 64 at opposite sides of the valve body 42.
  • a vacuum bag 72 is placed on the base plate 56 to define therewith an enclosed space constituting the evacuation chamber, and an airtight seal is made between the vacuum bag 72 and the base plate 56 by means of the edge sealant strips 64 and 66.
  • the edge breather strip 60 extends completely around the base plate 56 adjacent to its periphery, and the surface breather 62 of plate form is located near the upper portion of the vacuum bag 72. This surface breather 62 has an area slightly less than the area of the upper portion of the vacuum bag 72.
  • the edge breather strip 60 and surface breather 62 assist in ensuring that air is withdrawn from substantially the entire region covered by the vacuum bag 72, and that the vacuum bag does not wrinkle or distort unduly during evacuation.
  • a release film 74 is located between the edge breather strip 60 and the surface breather 62 to prevent these breathers adhering to one another.
  • the evacuation chamber of Fig 6 includes the evacuation valve of Fig 5 having a straight quick release coupling 40.
  • Fig 7 is a side elevation of the evacuation chamber of Fig 6 using a modified evacuation valve.
  • the modified evacuation valve comprises the valve body 42 illustrated in Fig 5, and a T-shaped quick release coupling 76 extending from the valve body 42 in place of the straight coupling 40.
  • the three arms of the coupling can extend at 120° to one another.
  • FIG 8 another evacuation valve includes a valve body 78 which is longer and narrower than the valve body 42 illustrated in Figure 5.
  • the valve body 78 has an upright outer side 79.
  • a straight quick release coupling 80 extends from the upper surface 44 of the valve body 78 perpendicularly to the vent passage through the valve body 78.
  • Figure 9 is a perspective view of a modified version of the evacuation valve of Figure 8 located in the evacuation chamber of Figure 6.
  • corresponding components of the evacuation valve and evacuation chamber of Figures 5 to 9 will be given the same reference numerals.
  • the proposed evacuation valve is a one piece item much less complex than through the bag ports, which are in themselves, prone to operator errors, ie by placing the silicone gasket on the bag outer surface or wrinkling and twisting of the bag during the tightening operation.
  • valve design is particularly suitable to carbon fibre reinforced tooling since through the tool porting leads to delamination and loss of vacuum integrity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)

Abstract

Chambre d'évacuation comprenant une plaque de base (56), un couvercle à vide (72) placé au-dessus de la plaque de base et une soupape permettant l'évacuation de la chambre. La soupape comprend un corps de soupape (42) possédant un passage de ventilation traversant le corps de soupape entre un évent intérieur (43) et un évent extérieur. Le corps de soupape (42) se trouve placé entre des bandes d'étanchéité (64, 66) opposées formant un joint étanche à l'air entre la plaque de base et le couvercle à vide, à leur périphérie. L'évent intérieur (43) est recouvert d'un grillage (54) empêchant le passage de ventilation de se bloquer et un accouplement (40) de soupape communique avec l'évent extérieur du corps de soupape (42).
PCT/GB1991/000421 1990-03-20 1991-03-19 Chambre d'evacuation WO1991014564A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909006253A GB9006253D0 (en) 1990-03-20 1990-03-20 An evacuation chamber
GB9006253.0 1990-03-20

Publications (1)

Publication Number Publication Date
WO1991014564A1 true WO1991014564A1 (fr) 1991-10-03

Family

ID=10672928

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1991/000421 WO1991014564A1 (fr) 1990-03-20 1991-03-19 Chambre d'evacuation

Country Status (4)

Country Link
AU (1) AU7460691A (fr)
GB (2) GB9006253D0 (fr)
IL (1) IL97588A0 (fr)
WO (1) WO1991014564A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5576030A (en) * 1995-10-02 1996-11-19 Lockheed Corporation Apparatus for fabricating composite parts
EP1507620A2 (fr) * 2002-05-17 2005-02-23 Bell Helicopter Textron Inc. Raccord a vide unitaire auto-obturant pour l'ensachage de materiaux composites
EP2343181A1 (fr) * 2010-01-09 2011-07-13 GSSC, Inc. Prises de connection pour moulage composite
EP2589485A1 (fr) * 2011-11-03 2013-05-08 The Boeing Company Aérateur à bord d'écoulement élevé et procédé d'échappement de l'air et des volatiles
WO2015026227A1 (fr) * 2013-08-21 2015-02-26 Groenewoud Klaas Huibertus Soupape à dépression et table à vide ou moule en forme de plaque équipé(e) de la soupape de dépression
US10814533B2 (en) * 2017-11-30 2020-10-27 The Boeing Company Systems and methods for applying vacuum pressure to composite parts
CN112757665A (zh) * 2020-12-17 2021-05-07 黄冈格罗夫氢能汽车有限公司 一种氢能汽车碳纤维产品成型模具及成型方法
GB2589124A (en) * 2019-11-21 2021-05-26 Spirit Aerosystems Europe Ltd Vacuum apparatus and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7452439B2 (en) 2003-09-30 2008-11-18 Fuji Electric Holding Co., Ltd. Vacuum lamination apparatus and vacuum lamination method
US20220152944A1 (en) * 2020-11-13 2022-05-19 Airtech International, Inc. Embossed vacuum bag film, vacuum bagging system including an embossed vacuum bag film, and methods of fabricating a composite part using the same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553054A (en) * 1970-01-12 1971-01-05 North American Rockwell Laminated structural members
DE2917344A1 (de) * 1979-04-28 1980-11-06 Messerschmitt Boelkow Blohm Formwerkzeug fuer ein bauteil aus faserverbundwerkstoff
US4311661A (en) * 1980-05-05 1982-01-19 Mcdonnell Douglas Corporation Resin impregnation process
US4357193A (en) * 1979-05-21 1982-11-02 Rockwell International Corporation Method of fabricating a composite structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3616057A (en) * 1969-03-10 1971-10-26 Carrol C Sachs Pressure-applying device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3553054A (en) * 1970-01-12 1971-01-05 North American Rockwell Laminated structural members
DE2917344A1 (de) * 1979-04-28 1980-11-06 Messerschmitt Boelkow Blohm Formwerkzeug fuer ein bauteil aus faserverbundwerkstoff
US4357193A (en) * 1979-05-21 1982-11-02 Rockwell International Corporation Method of fabricating a composite structure
US4311661A (en) * 1980-05-05 1982-01-19 Mcdonnell Douglas Corporation Resin impregnation process

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5576030A (en) * 1995-10-02 1996-11-19 Lockheed Corporation Apparatus for fabricating composite parts
EP1507620A2 (fr) * 2002-05-17 2005-02-23 Bell Helicopter Textron Inc. Raccord a vide unitaire auto-obturant pour l'ensachage de materiaux composites
EP1507620A4 (fr) * 2002-05-17 2010-05-05 Bell Helicopter Textron Inc Raccord a vide unitaire auto-obturant pour l'ensachage de materiaux composites
EP2343181A1 (fr) * 2010-01-09 2011-07-13 GSSC, Inc. Prises de connection pour moulage composite
EP2589485A1 (fr) * 2011-11-03 2013-05-08 The Boeing Company Aérateur à bord d'écoulement élevé et procédé d'échappement de l'air et des volatiles
US8940222B2 (en) 2011-11-03 2015-01-27 The Boeing Company High flow edge breather and method
WO2015026227A1 (fr) * 2013-08-21 2015-02-26 Groenewoud Klaas Huibertus Soupape à dépression et table à vide ou moule en forme de plaque équipé(e) de la soupape de dépression
US10814533B2 (en) * 2017-11-30 2020-10-27 The Boeing Company Systems and methods for applying vacuum pressure to composite parts
GB2589124A (en) * 2019-11-21 2021-05-26 Spirit Aerosystems Europe Ltd Vacuum apparatus and method
WO2021099763A1 (fr) * 2019-11-21 2021-05-27 Spirit AeroSystems (Europe) Limited Appareil à vide et procédé
CN112757665A (zh) * 2020-12-17 2021-05-07 黄冈格罗夫氢能汽车有限公司 一种氢能汽车碳纤维产品成型模具及成型方法

Also Published As

Publication number Publication date
GB2245215B (en) 1994-01-26
AU7460691A (en) 1991-10-21
GB9105455D0 (en) 1991-05-01
IL97588A0 (en) 1992-06-21
GB9006253D0 (en) 1990-05-16
GB2245215A (en) 1992-01-02

Similar Documents

Publication Publication Date Title
KR101264947B1 (ko) 대형의 벌집형 코어 강화 복합재료 구조물을 위한 저온,진공경화 제조방법
JP5721739B2 (ja) 高温複合ツール
KR100469876B1 (ko) 이중목적을갖는레이업공구
US10479066B2 (en) Composite tool having vacuum integrity and method of making the same
WO1991014564A1 (fr) Chambre d'evacuation
KR20100017350A (ko) 섬유 합성 구조물을 가공하기 위한 장치 및 방법
US10052828B2 (en) Supporting profiled element, method for producing a supporting profiled element, and use of said supporting profiled element in a method for producing a reinforced vehicle fuselage component
US20080048369A1 (en) Integral double bag for vacuum bagging a composite part and method of using the same
GB2316036A (en) Bagging blanket and method for forming a fibre reinforced resin composite component
EP0175510B1 (fr) Moulage au sac à vide
US4732639A (en) Vacuum bagging apparatus
US4822651A (en) Vacuum diaphragm device
US20230033757A1 (en) Method for securing core to tool during machining
AU2017267929B2 (en) Tri-layer bladder and related systems and methods for fabricating composite structures
US5425628A (en) Pressure bag for tool core
US7438781B2 (en) System and method for vacuum bag fabrication
EP2212100B1 (fr) Réduction et compactage en plusieurs stades in situ, et traitement en un seul stade de stratifiés de réparation composites et épais
JP2003039566A (ja) 補強パネルの製造方法
JP7041164B2 (ja) 複合的な構成要素を製造するためのツール
KR102577575B1 (ko) 복합 구조물들을 접합하기 위한 방법들 및 시스템들
EP4328000A1 (fr) Ensemble moule pour la fabrication d'une préforme ou d'un élément préfabriqué d'une pale de rotor d'éolienne et procédé de fabrication d'un tel élément préfabriqué ou préforme
US10814533B2 (en) Systems and methods for applying vacuum pressure to composite parts
CN115195152A (zh) 用于处理复合结构的设备和方法
JP2006007512A (ja) ハニカムサンドイッチパネルの製造方法

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA