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Fabrication of doubly-curved CFRP shell structures by tailored fiber placement embroidery machines

Research Project

Project/Area Number 18H01355
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 18030:Design engineering-related
Research InstitutionWaseda University (2019-2020)
Yokohama National University (2018)

Principal Investigator

Maekawa Takashi  早稲田大学, 理工学術院, 上級研究員(研究院教授) (70361863)

Co-Investigator(Kenkyū-buntansha) 松尾 宏平  国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (00399528)
澁谷 忠弘  横浜国立大学, 先端科学高等研究院, 教授 (10332644)
竹澤 正仁  国立研究開発法人海上・港湾・航空技術研究所, その他部局等, 研究員 (50782489)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2020: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2019: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2018: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords炭素繊維強化プラスチック / 刺しゅう機 / ツールパス / 曲率線 / 応力線 / ストレッチ線 / VaRTM法 / L-RTM法 / 自由曲面 / B-spline / 炭素繊維配置方向 / 炭素繊維強化樹脂 / CFRP / 形状モデリング
Outline of Final Research Achievements

We introduced a fabrication method of doubly-curved shell structures by CFRP with control over fiber directions. Doubly-curved surfaces are tessellated into structured quadrilateral patches according to the purpose of use. One can design the tessellation in the parameter space, and map it to the 3D parametric surface, or use the orthogonal net of curves on surfaces such as lines of curvature, principal stretch lines, and principal stress lines. These patches, which we call generalized principal patches, are flattened onto a plane, and connected one by one by aligning the equi-length adjacent edges using translations and rotations forming generalized principal strips. Carbon fiber tows are placed onto these strips with one stroke by tailored fiber placement embroidery machines so that the fibers are not disconnected within strips. Preforms are stacked layer by layer into a mold of particular parts, and VaRTM or L-RTM method is employed to fabricate CFRP parts.

Academic Significance and Societal Importance of the Research Achievements

本研究においてコンピュータ制御されたミシンを使用して対象曲面内で切断されない炭素繊維が直交するCFRP成形方法を世界に先駆けて開発した。今後、さまざまなものづくりの分野においてこれまでにない利用技術を生み出すことが大いに期待される。特に、CFRPは環境対応素材として自動車、航空機の分野での用途が急速に拡がる中、日本のメーカ3社で世界の70%以上のシェアを有しており、国策上も非常に重要な素材である。本研究のCFRPの成形加工方法は、高強度の3次元形状を生成できるため、世界における日本のCFRP技術の存在感をさらに後押しすることが期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (6 results)

All 2021 2020 2019 2018 Other

All Journal Article (3 results) (of which Peer Reviewed: 2 results) Presentation (1 results) (of which Int'l Joint Research: 1 results) Remarks (1 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Fabrication of doubly-curved CFRP shell structures with control over fiber directions2021

    • Author(s)
      Masahito. Takezawa, Yuto Otoguro, Kohei Matsuo, Tadahiro Shibutani, Akio Sakurai, Takashi Maekawa
    • Journal Title

      Computer-Aided Design

      Volume: 136 Pages: 103028-103028

    • DOI

      10.1016/j.cad.2021.103028

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 繊維配向を自由に制御する次世代CFRPの成形技術2021

    • Author(s)
      竹澤 正仁
    • Journal Title

      プラスチックスエージ

      Volume: 7月号

    • NAID

      40022628599

    • Related Report
      2020 Annual Research Report
  • [Journal Article] Control of lines of curvature for plate forming in shipbuilding2019

    • Author(s)
      Takezawa Masahito、Matsuo Kohei、Maekawa Takashi
    • Journal Title

      Computer Aided Geometric Design

      Volume: 75 Pages: 101785-101785

    • DOI

      10.1016/j.cagd.2019.101785

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] Freeform shape forming of CFRP based on lines of curvature2018

    • Author(s)
      宇佐美陸, 竹澤正仁, 松尾宏平, 櫻井昭男, 前川卓
    • Organizer
      Asian Conference on Design and Digital Engineering 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Remarks] Digital Engineering Lab

    • URL

      http://maekawalab-ynu.com/

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 曲面展開プログラム、ツールパス計算プログラム、複合材料を用いた曲面の製造方法、及び複合材料を用いた曲面の製造システム2020

    • Inventor(s)
      竹澤正仁、松尾宏平、櫻井昭男、前川卓、滝沢研二、乙黒雄斗
    • Industrial Property Rights Holder
      海上・港湾・航空技術研究所、早稲田大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2020-151174
    • Filing Date
      2020
    • Related Report
      2020 Annual Research Report

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Published: 2018-04-23   Modified: 2022-03-04  

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