JP5924934B2 - 複合材の継手構造 - Google Patents
複合材の継手構造 Download PDFInfo
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- JP5924934B2 JP5924934B2 JP2011288838A JP2011288838A JP5924934B2 JP 5924934 B2 JP5924934 B2 JP 5924934B2 JP 2011288838 A JP2011288838 A JP 2011288838A JP 2011288838 A JP2011288838 A JP 2011288838A JP 5924934 B2 JP5924934 B2 JP 5924934B2
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- 230000008719 thickening Effects 0.000 claims description 70
- 239000000463 material Substances 0.000 claims description 28
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 239000007769 metal material Substances 0.000 claims description 14
- 230000013011 mating Effects 0.000 description 11
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000011152 fibreglass Substances 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 239000011151 fibre-reinforced plastic Substances 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000003733 fiber-reinforced composite Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/12—Fastening strips or bars to sheets or plates, e.g. rubber strips, decorative strips for motor vehicles, by means of clips
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/721—Fibre-reinforced materials
- B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7394—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset
- B29C66/73941—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoset characterised by the materials of both parts being thermosets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/47—Molded joint
- Y10T403/472—Molded joint including mechanical interlock
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/75—Joints and connections having a joining piece extending through aligned openings in plural members
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Plates (AREA)
Description
すなわち、図7の(a)に模式的に示したように、複合材板10は、繊維と樹脂とからなるシート状の複合材料成形用素材10aが積層されて一体化されることで形成されている。したがって、増厚した複合材板10´を形成する場合には、図7の(b)に拡大して示したように、複合材料成形用素材10aとは別に、これとは長さの異なる複合材料成形用素材10a´を用意し、これをテーパ状に積層して一体化する必要があり、製造に手間およびコストがかかるものであった。
本発明の複合材の継手構造は、
複合材料により形成された複合材の継手構造において、
前記複合材の少なくとも一面に貼着された増厚用プレートを備え、
前記複合材、前記増厚用プレートおよび前記複合材に接合される相手側部材に形成されている貫通孔に締結部材を挿通して固定することで、前記複合材と前記相手側部材とが締結されることを特徴とする。
このように、増厚用プレートを複合材と同じ複合材料により形成すれば、両者間で熱膨張差が生じないため、温度変化に伴う熱応力・熱変形の影響を受けずに、貼着品質が安定する。
このように、増厚用プレートを金属材料によって形成することで、金属材料の性質を活かした複合材の継手構造とすることができる。すなわち、例えば増厚用プレートを延性の高い金属材料によって形成するとともに、複合材に形成されている貫通孔を増厚用プレートに形成されている貫通孔よりも大径に形成することで、後述するように、複数の締結体間におけるベアリング面圧の均等化を図ることができる。
このように、増厚用プレートを複合材よりも延性の高い樹脂基材料によって形成し、且つ複合材に形成されている貫通孔を増厚用プレートに形成されている貫通孔よりも大径に形成することで、後述するように、複数の締結体間におけるベアリング面圧の均等化を図ることができる。
このように、増厚用プレートが複合材の両面に貼着されていれば、複合材の一面にだけ増厚用プレートが貼着されている場合と比べて、複合材の応力分布を一様にすることができる。また、増厚用プレートと複合材との貼着面積が2倍となるため、貼着面に作用するせん断力を1/2に低減することができる。
ただし、本発明の範囲は以下の実施形態に限定されるものではない。以下の実施形態に記載されている構成部品の寸法、材質、形状、その相対配置などは、特に記載がない限り、本発明の範囲をそれにのみ限定する趣旨ではなく、単なる説明例に過ぎない。
図1に示したように、本発明の一実施形態の複合材の継手構造1は、複合材料により形成された平板状の複合材板10(複合材)の継手構造であり、複数(2本×4列)のボルト30およびナット32(締結体)により、複合材板10に相手側部材20が接合されている。
しかしながら本発明の複合材の継手構造1はこれに限定されず、少なくとも複合材の一面に増厚用プレートが貼着されていればよいものである。
10 複合材板(複合材)
10a 複合材料成形用素材
20 相手側部材
20a フランジ部
24 貫通孔
26 貫通孔
30 ボルト
32 ナット
40a、40b 増厚用プレート
Claims (3)
- 複合材料により形成された複合材の継手構造において、
前記複合材の少なくとも一面に貼着された増厚用プレートを備え、
前記複合材、前記増厚用プレートおよび前記複合材に接合される相手側部材に形成されている貫通孔に締結部材を挿通して固定することで、前記複合材と前記相手側部材とが締結されるとともに、
前記増厚用プレートは、金属材料によって形成され、
前記複合材に形成されている貫通孔が、前記増厚用プレートに形成されている貫通孔よりも、大径に形成されていることを特徴とする複合材の継手構造。 - 複合材料により形成された複合材の継手構造において、
前記複合材の少なくとも一面に貼着された増厚用プレートを備え、
前記複合材、前記増厚用プレートおよび前記複合材に接合される相手側部材に形成されている貫通孔に締結部材を挿通して固定することで、前記複合材と前記相手側部材とが締結されるとともに、
前記増厚用プレートは、前記複合材よりも延性の高い樹脂基材料によって形成され、
前記複合材に形成されている貫通孔が、前記増厚用プレートに形成されている貫通孔よりも、大径に形成されていることを特徴とする複合材の継手構造。 - 前記増厚用プレートは、前記複合材の両面に貼着されていることを特徴とする請求項1又は2に記載の複合材の継手構造。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011288838A JP5924934B2 (ja) | 2011-12-28 | 2011-12-28 | 複合材の継手構造 |
EP12861083.9A EP2799728B1 (en) | 2011-12-28 | 2012-12-17 | Joint structure for composite |
US14/360,754 US10094405B2 (en) | 2011-12-20 | 2012-12-17 | Joint structure for composite member |
CN201280061547.1A CN104024661A (zh) | 2011-12-28 | 2012-12-17 | 复合件的接头结构 |
PCT/JP2012/082644 WO2013099673A1 (ja) | 2011-12-28 | 2012-12-17 | 複合材の継手構造 |
Applications Claiming Priority (1)
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JP2011288838A JP5924934B2 (ja) | 2011-12-28 | 2011-12-28 | 複合材の継手構造 |
Publications (2)
Publication Number | Publication Date |
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JP2013137075A JP2013137075A (ja) | 2013-07-11 |
JP5924934B2 true JP5924934B2 (ja) | 2016-05-25 |
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JP2011288838A Active JP5924934B2 (ja) | 2011-12-20 | 2011-12-28 | 複合材の継手構造 |
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US (1) | US10094405B2 (ja) |
EP (1) | EP2799728B1 (ja) |
JP (1) | JP5924934B2 (ja) |
CN (1) | CN104024661A (ja) |
WO (1) | WO2013099673A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB0901640D0 (en) * | 2009-02-03 | 2009-03-11 | Airbus Uk Ltd | Joint |
JP5907422B2 (ja) * | 2012-03-30 | 2016-04-26 | 広島県 | 繊維強化樹脂材料部材の締結構造 |
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US10094405B2 (en) | 2018-10-09 |
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EP2799728B1 (en) | 2020-02-05 |
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