WO2018168202A1 - 繊維材の賦形装置及び繊維材の賦形方法 - Google Patents
繊維材の賦形装置及び繊維材の賦形方法 Download PDFInfo
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- WO2018168202A1 WO2018168202A1 PCT/JP2018/001789 JP2018001789W WO2018168202A1 WO 2018168202 A1 WO2018168202 A1 WO 2018168202A1 JP 2018001789 W JP2018001789 W JP 2018001789W WO 2018168202 A1 WO2018168202 A1 WO 2018168202A1
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- Prior art keywords
- tape material
- tape
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- placing
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- 238000007493 shaping process Methods 0.000 title claims abstract description 48
- 239000002657 fibrous material Substances 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 15
- 239000000835 fiber Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims description 111
- 238000010030 laminating Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000001721 transfer moulding Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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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
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/386—Automated tape laying [ATL]
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/38—Automated lay-up, e.g. using robots, laying filaments according to predetermined patterns
- B29C70/386—Automated tape laying [ATL]
- B29C70/388—Tape placement heads, e.g. component parts, details or accessories
-
- 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
Definitions
- the present invention relates to a technique for shaping a tape-like continuous fiber material into a shape having a curved side.
- a tape-like continuous fiber material (hereinafter referred to as “tape material”) is formed to produce a preform having a desired shape, and this preform is impregnated with a resin.
- a technique for obtaining a finished product by curing is known.
- the tape material is arranged and laminated so that the reinforcing fibers have a predetermined orientation direction by an automatic fiber placement (AFP) apparatus or an automatic tape lamination (ATL) apparatus. Therefore, when producing a curved preform, a tape material is attached in a curved shape corresponding to the curved shape (see, for example, Patent Document 1).
- AFP automatic fiber placement
- ATL automatic tape lamination
- the tape material may not be arranged without a gap.
- a flat web portion curved in the width direction, and a flange portion standing in the same direction (bending formation) from the curved sides at both ends in the width direction. May be produced.
- the incident angle of the tape material on the flange portion continuously changes.
- a gap is generated between the tape members at the flange portion, resulting in a decrease in strength of the finished product.
- the present invention has been made in order to solve the above-described problems, and it is an object of the present invention to suitably shape a tape member with a curved flange portion while arranging tape materials without gaps.
- the invention according to claim 1 is a fiber material in which tape materials including continuous fiber bundles extending along the longitudinal direction are arranged and shaped into a shaped shape having a curved flange portion.
- the shaping device of Opening means capable of opening the tape material and expanding its width; And placing the tape material that has passed through the opening means on the surface of the forming jig, and placing means configured to change the orientation of the tape material to be placed,
- the shaped shape is a three-dimensional shape having a web portion having a curved side and the flange portion erected from the curved side of the web portion; While the width of the tape material is continuously changed by the opening means so that no gap is generated between the tape material when the tape material is placed on the surface of the forming jig,
- the placing means is arranged in a plurality of rows on the surface of the forming jig while placing the tape material in a curved shape so that the incident angles of the tape material from the web portion to the flange portion are aligned
- the invention according to claim 2 is the fiber material shaping apparatus according to claim 1,
- the web portion has the curved side and another curved side facing the curved side,
- the placing means places the tape material in a curved shape with a curvature corresponding to the ratio of the length of the curved side to the other curved side.
- the invention described in claim 3 is a method for shaping a fiber material having the same characteristics as the fiber material shaping device described in claim 1.
- the tape from the web portion to the flange portion while the width of the tape material is continuously changed by the opening means for opening the tape material so that no gap is generated between adjacent ones.
- the tape material is arranged in a plurality of rows on the forming jig while being placed in a curved shape so that the incident angles of the materials are aligned. Therefore, the tape material can be suitably shaped into a shape having a curved flange portion while arranging the tape materials without gaps.
- FIG. 1 is a conceptual diagram of the shaping apparatus 1.
- the shaping apparatus 1 is for producing a preform by shaping a tape material T having reinforcing fibers.
- the shaping apparatus 1 has a curved flange portion. It is shaped into a shape.
- the tape material T is a dry tape-like continuous fiber bundle including a fiber bundle of continuous fibers (reinforced fibers such as carbon fibers) extending along the longitudinal direction.
- the tape material T is bundled with a thermoplastic agent or the like. ing.
- the shaping device 1 includes a tape material bobbin 2, a stacking device head 3, a forming jig 4, and a control unit 5.
- the tape material bobbin 2 winds and holds the tape material T, and supplies the tape material T to the laminating apparatus head 3.
- the stacking device head 3 is attached to the tip of a robot arm 6 that is configured to be movable at the tip. While moving by the robot arm 6, the tape material T is pulled out from the tape material bobbin 2 to Place (stack) on the surface.
- the laminating apparatus head 3 includes, in order from the upstream side in the transport direction of the tape material T, a tape material drawing roller 31 that draws the tape material T from the tape material bobbin 2, and a laminating roller that laminates the tape material T on the surface of the forming jig 4. 37 and at least two pairs of rollers.
- a fiber opening means 33 Between the tape material drawing roller 31 and the laminating roller 37, a fiber opening means 33, a tack material applying device 35, and a cutter 36 are provided.
- the opening means 33 can expand the width freely within a predetermined range by opening the tape material T.
- the specific configuration of the fiber opening means 33 is not particularly limited as long as the tape material T is opened and its width can be freely expanded.
- it may be a mechanical type (for example, refer to Japanese Patent Application Laid-Open No. Hei 3-14636) that opens in physical contact with the tape material T, or the tape material T is in a fluid (air or liquid).
- Fluid type for example, see Japanese Patent Application Laid-Open No. 11-172562
- electric type for opening the tape material T with an electric force for example, Japanese Patent Application Laid-Open No. 07-258949
- the tack material applicator 35 applies a tack (temporary fixing) material to one main surface of the tape material T (the lower main surface at the time of lamination).
- the cutter 36 cuts the tape material T to a required length.
- the forming jig 4 is a mold base on which the tape material T is placed (laminated) on the surface by the laminating apparatus head 3.
- the forming jig 4 is formed in a shape having a flat plate portion (upper plate portion) having at least one curved side and a side plate portion standing downward from the curved side.
- the control unit 5 comprehensively controls the operation of each unit of the shaping apparatus 1. Specifically, the control unit 5 controls the operation of the robot arm 6 to control the position, orientation, speed, and the like of the laminating apparatus head 3 or the degree of opening of the tape material T by the opening means 33 (that is, opening). Or the width of the tape material T after fiber finishing is controlled.
- FIG. 2 (A) and FIG. 2 (B) are diagrams for explaining this shaping example.
- the incident angle ⁇ of the tape material T from the web portion 81 to the flange portion 82 is aligned, and the tape
- the tape material T By placing the tape material T on the forming jig 4 while continuously changing the width of the material T, the tape materials T are arranged without gaps.
- the control unit 5 of the shaping apparatus 1 is moved by the robot arm 6 while changing the direction of the laminating apparatus head 3, and the incident angle ⁇ of the tape material T from the web part 81 to the flange part 82 is changed.
- the tape material T is placed (steered) in a curved line so as to be aligned.
- the controller 5 causes the opening means 33 to reduce the width of the tape material T from the inside (lower side of FIG. 2A) to the outside (see FIG. 2) so that the gap between the adjacent tape materials T is filled.
- the tape material T is placed on the surface of the forming jig 4 while being continuously changed so as to expand toward the curved side of 2 (A).
- the curvature of the tape material T by the steering is appropriately set according to the curvature of the two curved sides at both ends of the web portion 81 or the ratio of the length thereof.
- FIG. 2B only the incident angle ⁇ of the tape material T with respect to the flange portion 82 on the front side in the figure is shown, but the incident angle of the tape material T on the flange portion 82 on the back side in the figure is also the same. Of course, they are aligned.
- the width of the tape material T is set so as to fill the gap between the tape materials T at this time while aligning the incident angle ⁇ of the tape material T from the web portion 81 to the flange portion 82 by steering. It is changing continuously. Thereby, it can form suitably in the solid shape which has the curved flange part 82, arranging the tape material T without gap.
- the laminated body 8 corresponding to the shape of the forming jig 4 is produced by laminating the tape materials T while sequentially arranging them. Then, the preform is completed by pressing the laminated body 8 as necessary. Thereafter, the preform is impregnated with resin by RTM (Resin Transfer Molding) molding to complete a fiber-reinforced composite material.
- RTM Resin Transfer Molding
- the width of the tape material T is continuously changed by the opening means 33 for opening the tape material T so that no gap is formed between adjacent ones.
- the tape material T is arranged in a plurality of rows on the forming jig 4 while being placed in a curved shape so that the incident angles ⁇ of the tape material T from the web portion 81 to the flange portion 82 are aligned. That is, the tape material T is steered so that the incident angles ⁇ of the tape material T from the web portion 81 to the flange portion 82 are aligned, and the width of the tape material T is filled so as to fill a gap between the tape materials T at this time. Can be changed continuously. Therefore, the tape material T can be suitably shaped into a shape having a curved flange portion 82 while arranging the tape materials T without gaps.
- the shape is not particularly limited as long as at least one flange portion is erected from the curved side of the web portion. Therefore, for example, as shown in FIG. 3A, the shape of the web part is such that two opposing curved sides are concave, or as shown in FIG. It may be linear.
- 3A and 3B are imaginary lines for determining how to attach the tape material T.
- the tape material according to the present invention is not particularly limited as long as it extends along the direction intersecting the curved side of the web portion.
- the fiber material shaping device and the fiber material shaping method according to the present invention are useful for shaping a tape material suitably in a shape having a curved flange portion.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Moulding By Coating Moulds (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
そのため、湾曲形状のプリフォームを作製する場合には、この湾曲形状に対応させてテープ材が曲線状に貼られる(例えば、特許文献1参照)。
例えば図4(A)及び図4(B)に示すように、幅方向に湾曲した平板状のウェブ部と、その幅方向両端の湾曲辺から同方向に立設(折り曲げ形成)されたフランジ部とを有するプリフォームを作製する場合がある。このような場合に、一定幅のテープ材を単純に同方向に並べると、テープ材のフランジ部への入射角が連続的に変化してしまう。その結果、フランジ部でテープ材間に隙間が生じてしまい、完成品の強度低下を招いてしまう。
前記テープ材を開繊させてその幅を拡大可能な開繊手段と、
前記開繊手段を経た前記テープ材を成形治具の表面に載置するとともに、当該載置する前記テープ材の向きを変化可能に構成された載置手段と、
を備え、
前記賦形形状が、湾曲辺を有するウェブ部と、当該ウェブ部の前記湾曲辺から立設した前記フランジ部とを有する立体形状であり、
前記開繊手段により、前記テープ材が前記成形治具の表面に載置されたときに隣り合うものとの間に隙間が生じないように当該テープ材の幅を連続的に変化させつつ、前記載置手段により、前記ウェブ部から前記フランジ部へのテープ材の入射角が揃うように当該テープ材を曲線状に載置しながら前記成形治具の表面上に複数列に並べることを特徴とする。
前記ウェブ部は、前記湾曲辺と当該湾曲辺に対向する他の湾曲辺を有し、
前記載置手段は、前記湾曲辺と前記他の湾曲辺との長さの比に対応した曲率で、前記テープ材を曲線状に載置することを特徴とする。
したがって、テープ材を隙間なく並べつつ、湾曲したフランジ部を有する形状に好適に賦形することができる。
まず、本実施形態における繊維材の賦形装置(以下、単に「賦形装置」という。)1の構成について説明する。
図1は、賦形装置1の概念図である。
このうち、テープ材ボビン2は、テープ材Tを巻回保持しており、当該テープ材Tを積層装置ヘッド3に供給する。
この積層装置ヘッド3は、テープ材Tの搬送方向上流側から順に、テープ材ボビン2からテープ材Tを引き込むテープ材引出ローラー31と、テープ材Tを成形治具4の表面に積層する積層ローラー37との、少なくとも2対のローラーを有している。
カッター36は、テープ材Tを必要な長さに切断するものである。
続いて、賦形装置1を用いた繊維材(テープ材T)の賦形方法について、具体例を挙げて説明する。
図2(A)及び図2(B)は、この賦形例を説明するための図である。
なお、図2(B)では、図中手前側のフランジ部82に対するテープ材Tの入射角αのみを示したが、図中奥側のフランジ部82へのテープ材Tの入射角も同様に揃えられるのは勿論である。
これにより、テープ材Tを隙間なく並べつつ、湾曲したフランジ部82を有する立体形状に好適に賦形することができる。
以上のように、本実施形態によれば、テープ材Tを開繊させる開繊手段33により、隣り合うものとの間に隙間が生じないようにテープ材Tの幅が連続的に変えられつつ、ウェブ部81からフランジ部82へのテープ材Tの入射角αが揃うように当該テープ材Tが曲線状に載置されながら、成形治具4上に複数列に並べられる。
つまり、ウェブ部81からフランジ部82へのテープ材Tの入射角αが揃うように当該テープ材Tがステアリングされつつ、このときのテープ材T間の隙間を埋めるように当該テープ材Tの幅が連続的に変えられる。
したがって、テープ材Tを隙間なく並べつつ、湾曲したフランジ部82を有する形状に好適に賦形することができる。
なお、本発明を適用可能な実施形態は、上述した実施形態に限定されることなく、本発明の趣旨を逸脱しない範囲で適宜変更可能である。
したがって、ウェブ部の形状は、例えば図3(A)に示すように、対向する2つの湾曲辺がいずれも凹状であったり、図3(B)に示すように、湾曲辺に対向する辺が直線状であったりしてもよい。なお、図3(A),図3(B)における細線は、テープ材Tの貼り方を定めるための想像線である。
3 積層装置ヘッド
33 開繊手段
37 積層ローラー
4 成形治具
5 制御部
6 ロボットアーム
8 積層体
81 ウェブ部
82 フランジ部
T テープ材
α 入射角
Claims (3)
- 長手方向に沿って延在する連続繊維束を含むテープ材を並べて、湾曲したフランジ部を有する賦形形状に賦形する繊維材の賦形装置であって、
前記テープ材を開繊させてその幅を拡大可能な開繊手段と、
前記開繊手段を経た前記テープ材を成形治具の表面に載置するとともに、当該載置する前記テープ材の向きを変化可能に構成された載置手段と、
を備え、
前記賦形形状が、湾曲辺を有するウェブ部と、当該ウェブ部の前記湾曲辺から立設した前記フランジ部とを有する立体形状であり、
前記開繊手段により、前記テープ材が前記成形治具の表面に載置されたときに隣り合うものとの間に隙間が生じないように当該テープ材の幅を連続的に変化させつつ、前記載置手段により、前記ウェブ部から前記フランジ部へのテープ材の入射角が揃うように当該テープ材を曲線状に載置しながら前記成形治具の表面上に複数列に並べることを特徴とする繊維材の賦形装置。 - 前記ウェブ部は、前記湾曲辺と当該湾曲辺に対向する他の湾曲辺を有し、
前記載置手段は、前記湾曲辺と前記他の湾曲辺との長さの比に対応した曲率で、前記テープ材を曲線状に載置することを特徴とする請求項1に記載の繊維材の賦形装置。 - 長手方向に沿って延在する連続繊維束を含むテープ材を並べて、湾曲したフランジ部を有する賦形形状に賦形する繊維材の賦形方法であって、
繊維材の賦形装置が、
前記テープ材を開繊させてその幅を拡大可能な開繊工程と、
前記開繊工程を経た前記テープ材を成形治具の表面に載置する載置工程と、
を実行し、
前記賦形形状が、湾曲辺を有するウェブ部と、当該ウェブ部の前記湾曲辺から立設した前記フランジ部とを有する立体形状であり、
前記開繊工程により、前記テープ材が前記成形治具の表面に載置されたときに隣り合うものとの間に隙間が生じないように当該テープ材の幅を連続的に変化させつつ、前記載置工程により、前記ウェブ部から前記フランジ部へのテープ材の入射角が揃うように当該テープ材を曲線状に載置しながら前記成形治具の表面上に複数列に並べることを特徴とする繊維材の賦形方法。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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US16/478,820 US11529773B2 (en) | 2017-03-17 | 2018-01-22 | Fiber-material molding machine and fiber-material molding method |
EP18767107.8A EP3597412B1 (en) | 2017-03-17 | 2018-01-22 | Shaping device for fiber material and shaping method for fiber material |
CN201880005734.5A CN110139742B (zh) | 2017-03-17 | 2018-01-22 | 纤维材料的赋形装置和纤维材料的赋形方法 |
JP2019505737A JP6732101B2 (ja) | 2017-03-17 | 2018-01-22 | 繊維材の賦形装置及び繊維材の賦形方法 |
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JP2017052383 | 2017-03-17 | ||
JP2017-052383 | 2017-03-17 |
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US (1) | US11529773B2 (ja) |
EP (1) | EP3597412B1 (ja) |
JP (1) | JP6732101B2 (ja) |
CN (1) | CN110139742B (ja) |
WO (1) | WO2018168202A1 (ja) |
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EP4342662A1 (en) | 2022-09-26 | 2024-03-27 | Subaru Corporation | Roller unit for feeding tapes, fiber placement apparatus and method of molding composite material |
EP4342661A1 (en) | 2022-09-26 | 2024-03-27 | Subaru Corporation | Roller unit for feeding tapes, fiber placement apparatus and method of molding composite material |
EP4349573A1 (en) | 2022-09-26 | 2024-04-10 | Subaru Corporation | Method of producing preform and method of molding composite material |
US12226964B2 (en) | 2019-03-27 | 2025-02-18 | University Of Limerick | In and relating to composite manufacturing |
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CN113183489B (zh) * | 2021-05-07 | 2022-04-22 | 科泰思(中国)复合材料有限责任公司 | 一种弧形纤维复合材料铺层及其铺设方法 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US12226964B2 (en) | 2019-03-27 | 2025-02-18 | University Of Limerick | In and relating to composite manufacturing |
EP4342662A1 (en) | 2022-09-26 | 2024-03-27 | Subaru Corporation | Roller unit for feeding tapes, fiber placement apparatus and method of molding composite material |
EP4342661A1 (en) | 2022-09-26 | 2024-03-27 | Subaru Corporation | Roller unit for feeding tapes, fiber placement apparatus and method of molding composite material |
EP4349573A1 (en) | 2022-09-26 | 2024-04-10 | Subaru Corporation | Method of producing preform and method of molding composite material |
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CN110139742A (zh) | 2019-08-16 |
US20200055263A1 (en) | 2020-02-20 |
CN110139742B (zh) | 2021-11-26 |
JP6732101B2 (ja) | 2020-07-29 |
US11529773B2 (en) | 2022-12-20 |
EP3597412A1 (en) | 2020-01-22 |
EP3597412B1 (en) | 2022-10-05 |
JPWO2018168202A1 (ja) | 2019-11-07 |
EP3597412A4 (en) | 2020-11-11 |
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