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Development for polymer matrix selection guide for carbon fiber reinforced plastic composites

Research Project

Project/Area Number 18K04721
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 26030:Composite materials and interfaces-related
Research InstitutionTohoku University

Principal Investigator

Yamamoto Go  東北大学, 工学研究科, 准教授 (30436159)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords炭素繊維強化プラスチック / 複合材料 / 引張強度予測 / 応力集中 / 自己組織化マップ / フラグメンテーション試験 / 数値解析 / 強度予測 / 繊維強化複合材料 / マトリックス樹脂 / 力学的特性
Outline of Final Research Achievements

The tensile strength-controlling factors of unidirectional carbon fiber reinforced plastics (CFRP) composites were investigated focusing on assessing the mechanical properties of the epoxy matrix. The degree of concentrated stress acting on the intact fiber surface, which determines the tensile strength properties of unidirectional CFRP composites, was evaluated by implementing double-fiber fragmentation tests in conjunction with numerical simulations. Correlation analysis was conducted, with the aim of extracting the factors that characterize the tensile strength of the unidirectional CFRP composites. The analysis of six epoxy materials with different mechanical properties demonstrated that the matrix crack tip displacement (CTOD) exhibited a linear correlations with surface stress concentration factor (SCF). These results revealed that CTOD is one of the dominant factors influencing the tensile strength characteristics of unidirectional CFRP composites.

Academic Significance and Societal Importance of the Research Achievements

持続可能で豊かな社会の実現のために炭素繊維強化プラスチック(CFRP)の特性向上を目指した研究が世界規模で進められている。しかしながら、CFRPの力学的特性を支配する一因である繊維表面の応力集中の程度をマトリクス樹脂の物性の観点から緩和させ、CFRPの力学的特性の向上を目指した研究は行われていなかった。本研究では、き裂先端における開口変位特性が低いマトリクス樹脂を用いることでCFRPの引張強度特性の向上が達成できることを明らかにするとともに、本発見はカーボンナノチューブ複合材料ならびにセルロースに代表される天然繊維を活用した次世代の複合材料開発にも適用することができる技術である。

Report

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

    (13 results)

All 2021 2020 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (4 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (2 results) Remarks (2 results)

  • [Int'l Joint Research] Sungkyunkwan University(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Sungkyunkwan University(韓国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Tensile-strength-controlling factors in unidirectional carbon fiber reinforced plastic composites2021

    • Author(s)
      Yamamoto Go、Koizumi Keita、Nakamura Takahiro、Hirano Noriyuki、Okabe Tomonaga
    • Journal Title

      Composites Part A: Applied Science and Manufacturing

      Volume: 140 Pages: 106140-106140

    • DOI

      10.1016/j.compositesa.2020.106140

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Considering the stress concentration of fiber surfaces in the prediction of the tensile strength of unidirectional carbon fiber-reinforced plastic composites2019

    • Author(s)
      Go Yamamoto, Miho Onodera, Keita Koizumi, Jun Watanabe, Haruki Okuda, Fumihiko Tanaka, and Tomonaga Okabe
    • Journal Title

      Composites Part A

      Volume: 121 Pages: 499-509

    • DOI

      10.1016/j.compositesa.2019.04.011

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Numerical study for tensile strength prediction of unidirectional carbon fiber-reinforced composite considering fiber surface stress concentration2019

    • Author(s)
      Go Yamamoto and Tomonaga Okabe
    • Journal Title

      Mechanical Engineering Journal

      Volume: 6 Issue: 3 Pages: 19-00020-19-00020

    • DOI

      10.1299/mej.19-00020

    • NAID

      130007663734

    • ISSN
      2187-9745
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 共振超音波スペクトロスコピー法を用いた炭素繊維およびその構成材料の弾性定数の評価2021

    • Author(s)
      松井一眞、山本剛
    • Organizer
      第12回日本複合材料会議(JCCM-12)
    • Related Report
      2020 Annual Research Report
  • [Presentation] 共振超音波スペクトロスコピー法を用いた不連続炭素繊維強化熱可塑性複合材料の異方性弾性定数の評価2021

    • Author(s)
      山本龍一郎、松井一眞、山本剛
    • Organizer
      第12回日本複合材料会議(JCCM-12)
    • Related Report
      2020 Annual Research Report
  • [Presentation] Prediction of Tensile Strength of Unidirectional Carbon-Fiber Reinforced Plastic composites : Experimental and Numerical studies2019

    • Author(s)
      Go Yamamoto
    • Organizer
      International Conference on Chemical Physics and Material Science (ICCPMS2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] PREDICTION OF TENSILE STRENGTH OF UNIDIRECTIONAL CARBON FIBER REINFORCED PLASTICS2018

    • Author(s)
      Go Yamamoto, Miho Omodera, Jun Watanabe, Haruki Okuda, Fumihiko Tanaka, Tomonaga Okabe
    • Organizer
      11th Asian-Australasian Conference on Composite Materials
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Book] 空飛ぶクルマ 空のモビリティ革命に向けた開発最前線 第4章第1節 CFRP の軽量化へのアプローチ2020

    • Author(s)
      山本剛
    • Total Pages
      322
    • Publisher
      (株)エヌ・ティー・エス
    • ISBN
      4860436784
    • Related Report
      2020 Annual Research Report
  • [Book] Tensile Strength of Unidirectional Carbon Fiber-Reinforced Plastic Composites2020

    • Author(s)
      Go Yamamoto, Keita Koizumi, Tomonaga Okabe
    • Total Pages
      12
    • Publisher
      InTech open access publisher
    • ISBN
      9781789859942
    • Related Report
      2019 Research-status Report
  • [Remarks] 山本研究室のwebページ

    • URL

      http://www.yamamotolab.mech.tohoku.ac.jp/

    • Related Report
      2020 Annual Research Report
  • [Remarks] 山本研究室のwebページ

    • URL

      http://www.plum.mech.tohoku.ac.jp/yamamoto_lab/

    • Related Report
      2019 Research-status Report 2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

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