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Mechanisms of fatigue life extension of CFRP due to nano fibers and development of prepreg using nano fiber modification

Research Project

Project/Area Number 26289012
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionDoshisha University

Principal Investigator

Fujii, Toru  同志社大学, 理工学部, 教授 (20156821)

Co-Investigator(Kenkyū-buntansha) 大窪 和也  同志社大学, 理工学部, 教授 (60319465)
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
Keywordsセルロースナノファイバー / ナノファイバー / 高分子系複合材料 / 炭素繊維 / CFRP / 機械的特性 / 耐久性 / CFRTP / 複合材料 / 疲労 / ナノ繊維 / CNF / 高分子 / 繊維長 / 熱可塑性エポキシ樹脂 / SMC / セルロースナノファイバ / サブミクロン繊維 / カーボン繊維 / 物理的変性 / 静的強度 / 強度向上メカニズム / セルロースナノ繊維 / ハロイサイト / プリプレグ
Outline of Final Research Achievements

The fatigue life of CFRP is well improved by modifying the polymer matrix with nano fibers such as Cellulose Nano Fibers due to an increase of observed adhesive strength between carbon fiber (CF) and polymer matrix. When nano fibers (NF) are well dispersed in the matrix, the physical modification of matrix becomes significant while they stick on CF, their effect disappears. NF must be enough longer to slide across two adjacent fibers. If nano fibers stick on the CF surface, the physical modification effect does not happen. Plastic deformation due to nano/micro crazing is induced at NF ends. Stress concentration at the CF/matrix interface becomes low. Then, fatigue life is extended.
UD prepreg was successfully developed using loosed fiber tows. CF-SMC using vinylester was also developed using sub-micron glass fibers whose mechanical properties are greater than those of commercially available CF-SMC. The applicability of nano fibers was also demonstrated using PP matrix for CFRTP.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Annual Research Report
  • 2014 Annual Research Report

Research Products

(47 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (22 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 22 results,  Acknowledgement Compliant: 11 results,  Open Access: 5 results) Presentation (13 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Book (6 results) Remarks (2 results) Patent(Industrial Property Rights) (3 results)

  • [Int'l Joint Research] ミラノ工科大学(イタリア)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Moderation in Temperature Dependence on Counter Frictional Coefficient and Prevention of Wear of C/C Composites by Synthesizing SiC around Surface and Internal Vacancies2017

    • Author(s)
      Noboru Wakamoto, Kiyotaka Obunai, Kazuya Okubo, Toru Fujii
    • Journal Title

      International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering

      Volume: 11 Pages: 246-249

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A new unidirectional carbon fiber prepreg using physically modified epoxy matrix with cellulose nano fibers and spread tows2016

    • Author(s)
      Ryo Umekia, Aya Tanakab, Kazuya Okubob, Toru Fujii
    • Journal Title

      Composites Part A: Applied Science and Manufacturing

      Volume: 90 Pages: 400-409

    • DOI

      10.1016/j.compositesa.2016.06.011

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of physical modification of matrix by nano (polyvinyl alcohol) fibers on fatigue performance of carbon fiber fabric-reinforced vinylester composites2016

    • Author(s)
      Yongzheng Shao, Kazuya Okubo, Toru Fujii, Ou Shibata, Yukiko Fujita
    • Journal Title

      Journal of Composite Materials

      Volume: 50 Pages: 4065-4075

    • DOI

      10.1177/002199839402801601

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Fatigue and Izod impact performance of carbon plain weave textile reinforced epoxy modified with cellulose microfibrils and rubber nanoparticles2016

    • Author(s)
      Valter Carvellia, Andrea Bettia, Toru Fujii
    • Journal Title

      Composites Part A: Applied Science and Manufacturing

      Volume: 84 Pages: 26-35

    • DOI

      10.1016/j.compositesa.2016.01.005

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanical Characteristics of C/C Composites Modified with Micro-Sized Glass Fibers2016

    • Author(s)
      Yasuhiro UTSUNOMIYA, Kiyotaka OBUNAI, Tadao FUKUTA, Koichi OZAKI, Kazuya OKUBO, Toru FUJII
    • Journal Title

      Advanced Experimental Mechanics

      Volume: 1 Pages: 126-130

    • NAID

      130005331701

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High pressure strength of carbon fibre reinforced vinylester and epoxy vessel2016

    • Author(s)
      Yongzheng Shao, Andrea Bettia, Valter Carvelli, Toru Fujii, Kazuya Okubo
    • Journal Title

      Composite Structures

      Volume: 140 Pages: 147-156

    • DOI

      10.1016/j.compstruct.2015.12.053

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Cement mortar reinforced with reclaimed carbon fibres, CFRP waste or prepreg carbon waste2016

    • Author(s)
      Hoang Nguyen, Valter Carvelli, Toru Fujii, Kazuya Okubo
    • Journal Title

      Construction and Building Materials

      Volume: 126 Pages: 321-331

    • DOI

      10.1016/j.conbuildmat.2016.09.044

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 廃棄されたCFRPからリサイクルする再生炭素繊維の抽出条件 -射出成形品に利用するための最適抽出温度条件-2016

    • Author(s)
      大窪 和也, 藤井 透, 永田 章太
    • Journal Title

      材料(日本材料学会)

      Volume: 65 Pages: 580-585

    • NAID

      130005405076

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Improvement of fatigue life and prevention of internal crack initiation of chopped carbon fiber reinforced plastics modified with micro glass fibers2016

    • Author(s)
      Ryohei Fujitani, Kazuya Okubo, Toru Fujii
    • Journal Title

      Proc. of SPIE 9800 “Behavior and Mechanics of Multifunctional Materials and Composites 2016"

      Volume: 9800 Pages: 230-236

    • DOI

      10.1117/12.2219466

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Influence of locational states of submicron fibers added into matrix on mechanical properties of plain-woven Carbon Fiber Composite2016

    • Author(s)
      Soichiro Kumamoto, Kazuya Okubo, Toru Fujii
    • Journal Title

      Curved and Layered Structures

      Volume: 3 Pages: 91-95

    • DOI

      10.1515/cls-2016-0008

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of cellulose nano fiber (CNF) on fatigue performance of carbon fiber fabric composites2015

    • Author(s)
      Yongzheng Shao, Tomoya Yashiro, Kazuya Okubo, Toru Fujii
    • Journal Title

      Composites Part A: Applied Science and Manufacturing

      Volume: 76 Pages: 244-256

    • DOI

      10.1016/j.compositesa.2015.05.033

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Leak Prevention of Nitrogen Gas for Plain Woven CF/Epoxy Composites by Filling Nanofiller under Cryothermal Fatigue2015

    • Author(s)
      民秋 実,大窪和也,藤井 透
    • Journal Title

      J. Soc. Mat. Sci., Japan

      Volume: 64 Issue: 9 Pages: 739-744

    • DOI

      10.2472/jsms.64.739

    • NAID

      130005098882

    • ISSN
      0514-5163, 1880-7488
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] <i>Recycling of Carbon Fiber and CFRP</i>2015

    • Author(s)
      藤井 透,大窪和也
    • Journal Title

      FIBER

      Volume: 71 Issue: 11 Pages: 535-554

    • DOI

      10.2115/fiber.71.p-535

      10.2115/fiber.71.P-535

    • NAID

      130005108441

    • ISSN
      0037-9875, 1884-2259
    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 炭素繊維のリサイクル,その背景,問題点,そしてビジネスの可能2015

    • Author(s)
      藤井透,大窪和也
    • Journal Title

      成形加工

      Volume: 27 Pages: 497-502

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 再生炭素繊維を用いたCFRP射出成形品の機械的特性に及ぼすPVA処理の効果2015

    • Author(s)
      永田章太,大窪和也,藤井 透
    • Journal Title

      強化プラスチックス

      Volume: 60 Pages: 125-129

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of cellulose nano fiber (CNF) on fatigue performance of carbon fiber fabric composites2015

    • Author(s)
      Yongzheng Shao, Kazuya Okubo, Toru Fujii
    • Journal Title

      Composites Part A

      Volume: -

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Study on The Effect of Matrix Properties on Fatigue Damage Initiation of Woven Carbon Fabric Vinylester Composites2014

    • Author(s)
      Yongzheng Shao, Kazuya Okubo, Toru Fujii, Ou Shibata, Yukiko Fujita
    • Journal Title

      Int. Journal of Mechanics and Materials

      Volume: 541-542 Pages: 243-249

    • DOI

      10.4028/www.scientific.net/amm.541-542.243

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Synthesization of CNTs on Pore Surfaces in C/C Composites and Effect of CNTs on Tribological Characteristics2014

    • Author(s)
      小武内清貴・大窪和也・藤井 透
    • Journal Title

      J. Soc. Mat. Sci., Japan

      Volume: 63 Issue: 5 Pages: 356-361

    • DOI

      10.2472/jsms.63.356

    • NAID

      130004749890

    • ISSN
      0514-5163, 1880-7488
    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effect of matrix properties on the fatigue damage initiation and its growth in plain woven carbon fabric vinylester composites2014

    • Author(s)
      Yongzheng Shao, Kazuya Okubo Toru Fujii Ou
    • Journal Title

      Composites Science and Technology

      Volume: 104 Pages: 125-135

    • DOI

      10.1016/j.compscitech.2014.09.010

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Study of Maleic Anhydride grafted Polypropylene Effect on Resin Impregnated Bamboo Fiber Polypropylene Composite2014

    • Author(s)
      Gibeop Nam, Noboru Wakamoto, Kazuya Okubo, Toru Fujii
    • Journal Title

      Agricultural Sciences

      Volume: 15 Pages: 1322-1328

    • DOI

      10.4236/as.2014.513141

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effect of Natural Fiber Reinforced Polypropylene Composite Using Resin Impregnation2014

    • Author(s)
      Nam, Nanqi Wu, Kazuya Okubo, Toru Fujii
    • Journal Title

      Agricultural Sciences

      Volume: 15 Pages: 1338-1343

    • DOI

      10.4236/as.2014.513143

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Improvement of Mechanical Properties in Bamboo Maleic Anhydride grafted Polypropylene/Polypropylene Composite Enhanced with Resin Impregnation Method2014

    • Author(s)
      Gibeop Nam,Noboru Wakamoto, Kazuya Okubo, Toru Fujii
    • Journal Title

      Advanced Materials Research

      Volume: 1051 Pages: 250-255

    • DOI

      10.4028/www.scientific.net/amr.1051.250

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Mechanical properties of center hole notched CFRP fabricated with modified matrix with added Cellulose Nano Fibers(CNFS)2016

    • Author(s)
      Aya Tanaka, Kazuya OKUBO, Toru FUJI
    • Organizer
      The 9th International conference on Green Composites
    • Place of Presentation
      Kobe, Japan
    • Year and Date
      2016-11-03
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Joint sufficiency bolted CFRP using reinforced collar with sub-micron fibers2016

    • Author(s)
      Yuto YAMADA, Kazuya OKUBO, Toru FUJII, Akio MAEDA
    • Organizer
      The 11th SPSJ International Polymer Conference
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      2016-11-03
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mechanical Properties of CFRP modified with Cellulose Nano Fibers(CNFs)-Influence of length of added CNFson static strength, fracture toughness and fatigue life-2016

    • Author(s)
      Aya Tanaka, Kazuya OKUBO and Toru FUJII
    • Organizer
      AIP Conf.2016 US-Japan2016
    • Place of Presentation
      Sapporo, Japan
    • Year and Date
      2016-08-01
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Damage mechanism in open hole carbon textile reinforced epoxy composite2016

    • Author(s)
      Valter Carvelli, Kazuya Okubo, Toru Fujii
    • Organizer
      17th European Conference on Composite Materials
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2016-06-26
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cement Mortar Reinforced with Recycled Carbon Fibre and CFRP Waste2016

    • Author(s)
      Hoang Nguyen, Toru Fujii, Kazuya Okubo, Valter Carvelli
    • Organizer
      17th European Conference on Composite Materials
    • Place of Presentation
      Munich, Germany
    • Year and Date
      2016-06-25
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of Heart Treatment on the Mechanical Properties of Kenaf Fiber2016

    • Author(s)
      Paulo Teodoro D.L.Carada, Toru Fujii and Kazuya Okubo
    • Organizer
      8th INTERNATIONAL CONFERENCE Time of Polymers & Composites
    • Place of Presentation
      Ischia, Italy
    • Year and Date
      2016-06-22
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 山椒は小粒でぴりりと辛い! セルロースナノファイバ―を如何に活用するか?2016

    • Author(s)
      藤井 透
    • Organizer
      日本化学会 第96春季年会
    • Place of Presentation
      同志社大学
    • Year and Date
      2016-03-25
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] FATIGUE PERFORMANCE OF MICRO-FIBRILLATED CELLULOSE AND RUBBER NANOPARTICLE HYBRID EPOXY RESIN REINFORCED CARBON PLAIN WEAVE COMPOSITES2015

    • Author(s)
      Valter Carvelli, Andrea Betti, Toru Fujii
    • Organizer
      0th International Conference on Composite Materials
    • Place of Presentation
      Copenhagen
    • Year and Date
      2015-07-19
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Fatigue Life Extension of Carbon Fiber/Epoxy Composites due to an addition of a Little amount of Submicron Fiber to the Matrix2015

    • Author(s)
      Toru Fujii, Kazuya Okubo
    • Organizer
      6th International Conference on Fatigue of Composites
    • Place of Presentation
      Paris, France
    • Year and Date
      2015-03-25 – 2015-03-27
    • Related Report
      2014 Annual Research Report
  • [Presentation] Application Of Spread Carbon Fiber Tows To Improve Fatigue Properties of CFRP modified with Cellulose nano fiber(CNF)2015

    • Author(s)
      Ryo Umeki, Kazuya Okubo, Toru Fujii
    • Organizer
      6th International Conference on Fatigue of Composites
    • Place of Presentation
      Paris, France
    • Year and Date
      2015-03-25 – 2015-03-27
    • Related Report
      2014 Annual Research Report
  • [Presentation] Carbon fiber prepreg waste is a treasure? -A new recycled carbon fiber extraction method from prepreg waste-2014

    • Author(s)
      Yoshikazu Maehata, Kazuya Okubo, Toru Fujii
    • Organizer
      24th Annual Meeting of MRS-Japan
    • Place of Presentation
      Yokohama
    • Year and Date
      2014-12-11 – 2014-12-12
    • Related Report
      2014 Annual Research Report
  • [Presentation] 平織CFRPの繊維束に沿う疲労き裂進展に及ぼすサブミクロン繊維の添加の効果― モデル試験片を用いた検証―2014

    • Author(s)
      縄岡雅人,大窪 和也,藤井 透
    • Organizer
      第39回複合材料シンポジウム,日本複合材料学会
    • Place of Presentation
      秋田
    • Year and Date
      2014-09-18 – 2014-09-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] Improvement of fatigue life of plain-woven CFRP modified with enhanced matrix with sub-micron sized glass fibers2014

    • Author(s)
      Kazuya Okubo,Toru Fujii, Tsubasa Kondo
    • Organizer
      10th Canada-Japan Workshop on Composites
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2014-08-19 – 2014-08-21
    • Related Report
      2014 Annual Research Report
  • [Book] セルロースナノファイバー技術資料集(分筆:第8章 非木材セルロースナノファイバーコンポジットの開発)2016

    • Author(s)
      藤井 透,大窪和也,磯貝明,河崎雅行,佐藤明弘,矢野浩之,合田公一,吉岡まり子,西田治男,附木貴行 他
    • Total Pages
      246
    • Publisher
      シーエムシー出版
    • Related Report
      2016 Annual Research Report
  • [Book] ポリマーナノコンポジットの開発と分析技術2016

    • Author(s)
      藤井 透,大窪和也,上田一恵,岡本正巳,棚橋 満,堀内 伸,髙嶋洋平,鶴岡孝章,冨田知志,赤松謙祐,芝田正之,小池常夫 他
    • Total Pages
      232
    • Publisher
      シーエムシー出版
    • Related Report
      2016 Annual Research Report
  • [Book] CFRPの成形・加工・リサイクル技術最前線2015

    • Author(s)
      藤井透,大窪和也
    • Total Pages
      386
    • Publisher
      NTS Inc.
    • Related Report
      2015 Annual Research Report
  • [Book] セルロースナノファイバーの調製,分散・複合化と製品応用(CFRPへのセルロース・ナノファイバーの微量添加と高サイクル寿命の飛躍)2015

    • Author(s)
      藤井透,大窪和也
    • Publisher
      技術情報社
    • Related Report
      2014 Annual Research Report
  • [Book] Manufacturing and Application of Composites (Improvement of Fatigue Life of Plain-woven CFRP Modified with Enhanced Matrix with Sub-micron)2014

    • Author(s)
      Kazuya Okubo, Toru Fujii, Tsubasa Kondo
    • Publisher
      DEStech Publication, Inc., USA
    • Related Report
      2014 Annual Research Report
  • [Book] Handbook of Polymer Nanocomposites. Processing, Performance and Application (Mechanical and Morphology Properties of Cellulose Nanocomposites)2014

    • Author(s)
      Mohamed H. Gabr, Kazuya Okubo, Toru Fujii
    • Publisher
      Springer Berlin Heidelberg, USA
    • Related Report
      2014 Annual Research Report
  • [Remarks] 同志社大学 構造工学研究室

    • URL

      https://:amsel.doshisha.ac.jp

    • Related Report
      2015 Annual Research Report
  • [Remarks] 同志社大学 構造工学研究室

    • URL

      http://amsel.doshisha.ac.jp/

    • Related Report
      2014 Annual Research Report
  • [Patent(Industrial Property Rights)] 繊維強化プラスチック用組成物及び炭素繊維強化プラスチック2016

    • Inventor(s)
      藤井 透、大窪和也
    • Industrial Property Rights Holder
      同志社大学
    • Industrial Property Rights Type
      特許
    • Filing Date
      2016-10-07
    • Related Report
      2016 Annual Research Report
  • [Patent(Industrial Property Rights)] 繊維強化繊維強化熱可塑性樹脂材料及びその製造方法2015

    • Inventor(s)
      藤井 透,大窪和也,大谷 龍平
    • Industrial Property Rights Holder
      藤井 透,大窪和也,大谷 龍平
    • Industrial Property Rights Type
      特許
    • Filing Date
      2015-06-02
    • Related Report
      2015 Annual Research Report
  • [Patent(Industrial Property Rights)] プリプレグ積層体2014

    • Inventor(s)
      藤井透,大窪和也,梅木亮, 川邉 健一,原田哲哉,山崎剛
    • Industrial Property Rights Holder
      同志社大学,福井県工業センター,DIC(株)
    • Industrial Property Rights Type
      実用新案
    • Filing Date
      2014-06-20
    • Related Report
      2014 Annual Research Report

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Published: 2014-04-04   Modified: 2018-03-22  

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