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Fracture Mechanics Study for Toughening Fiber Reinforced Composites

Research Project

Project/Area Number 08650085
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionTohoku University

Principal Investigator

HASHIDA Toshiyuki  Tohoku Univ.Faculty of Engng, Assoc.Prof., 工学部, 助教授 (40180814)

Co-Investigator(Kenkyū-buntansha) SATO Kazushi  Miyagi National College of Technolog, Mechanical Engng.Dept., Lecturer, 機械工学科, 講師 (80235324)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsComposite / Distributed Microcracking Material / Fracture Mechanics / Material Design Model / Sparle Plasma Sintering Method / Ceramics / Fiber / Toughening / 高靱化
Research Abstract

The objective of this research is firstly to develop a fracture mechanics based micromechanical model for the design of pseudo strain hardening composites reinforced with random discontinuous and aligned continuous fibers, and then to propose a method for optimizing the strength and the toughness of composites on the basis of themicromechanical model. The following tasks form major subjects of this research.
Task (1) Development of Design Model
We developed a micromechanical model which provides a link between the composite properties (strength and toughness) and the composite parameters (fiber parameters : dimensions, volume fraction and mechanical properties ; matrix parameters : toughness and elastic moduli ; interface shear strength ; snubbing coefficient). The model is applicable to both the cases of fiber pull-out and fiber rupture.
Task (2) Preparation and Evaluation of Fiber Reinforced Composites
Using a spark plasma sintering method, we prepared continuos carbon fiber reinforced SiC composites and LAS/wolastonite composites reinforced with short random fibers of a 304 type stainless steel. It was shown by conducting three point bend tests that the micromechanical model has a capability of predicting the mechanical properties of the prepared composites. Furthermore, the LAS/wolastonite composites were shown to produce pseudo strain hardening behavior.
Task (3) Optimization of Composite Parameters
Based on the micromechanical model, we devised a design chart which embodied the conditions for pseudo strain hardening, uniform fiber distribution, and fiber rupture. Finally, we proposed a methodology of optimizing the fiber parameters for high toughness composites by conducting parametric studies.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 橋田 俊之、蔦森 正憲、高橋 秀明、和田 千春: "マルチプルクラックによる短繊維ゾノトライト複合材料の高靭化" 無機マテルアル. 3-262. 203-211 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.C.Rendon, T.Nishikawa, M.Saito, T.Hashida, H.Takahashi: "Mechanical Behavior of Ceramics Prepared by Means of Spark Plasma Sintering Method" Proceedings of Asian Pacific Conference for Fracture and Strength '96. 693-697 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Ha, T Hashida: "Development of environmentally-friendly processing methods for cementitious material" Proceeding of International Symposium on Solvothermal & Hydrothermal Processes. 54-55 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Hosoi, T, Hashida, H.Takahashi, N.Yamasaki, T.Korenaga: "Solidification behavior of calcium carbonate via aragonite-calcite wet transformation with hydrothermal hot-pressing" J.Materials Scinece Letter. 16. 382-385 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 佐藤 和彦、橋田 俊之、高橋 秀明、山崎 仲道: "水熱ホットプレス法によるアルミナセメントーリン酸塩結合固化体の合成" 日本セラミックス協会学術論文誌. 105-5. 424-427 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Sato, T.Hashida, H.Takahashi, N.Yamasaki: "Development of High Strength Calcium Aluminate-Phosphate Cement by Hydrothermal Hot-Pressing" J.Materials Science Letter. 16. 1464-1468 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 佐藤 和彦、橋田 俊之、高橋 秀明、山崎 仲道: "水熱ホットプレス法を用いた廃コンクリート固化体のスラグ添加による高強度化" 日本セラミックス協会学術論文誌. 105-3. 262-264 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Hashida, M.Tsutamori, H.Takahashi, C Wada: "Toughening of Short Fiber Reinforced Xonotlite Composites by Multiple Cracking" Inorganic Materials. Vol.3, No.262. 203-211 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.C.Rendon-Angeles, T.Nishikawa, M.Saito, T.Hashida, H.Takahashi: "Mechanical Behavior of Ceramics Prepared by Means of Spark Plasma Sintering Method" Proceedings of Asian Pacific Conference for Fracture and Strength '96, July 23-26,1996, Kyonju, Korea. 693-697 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Ha, and T.Hashida: "Development of environmentally-friendly processing methods for cementitious material" Proceedings of International Symposium on Solvothemal & Hydrothermal Processes, September 1-3,1997 Takamatsu, Kanagawa, Japan. 54-55

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Hosoi, T.Hashida, H.Takahashi, N.Yamasaki and T.Korenaga: "Solidification behavior of calcium carbonate via aragonite-calcite wet transformation with hydrothermal hot-pressing" J.Materials Science Letter. Vol.16. 382-385 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Sato, T.Hashida, H.Takahashi, N.Yamasaki: "Solodification Method for Phosphate Bonded Alumina Cement by Hydrothermal Hot-Pressing" Journal of the Ceramic Society of Japan. Vol.105, No.5. 424-427 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Sato, T.Hashida, H.Takahashi, and N.Yamasaki: "Development of High Strength Calcium Alminate-Phosphate Cement by Hydrothermal Hot-pressing" J.Materials Science Letter. Vol.16. 1464-1468 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Sato, T.Hashida, H.Takahashi, N.Yamasaki: "Strengthening of Hydrothermal-Hot-Pressed Concrete Wastes by the Addition of Slag" Journal of the Ceranic Society of Japan. Vol.l05, No.3. 262-264 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Ha, T Hashida: "Development of evironmentally-friendly processing methods for cemenfitious" Proceeding of International Symposium on Solvothermal & Hydrothermal Processes. 54-55 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Hosoi, T.Hashida, H.Takahashi, N.Yamasaki, T.Korenaga: "Solidification behavior of calcium carbonate via aragonite-calcite wet transformation with hydrothermal hot-pressing" J.Materials Science Letter. 16. 382-385 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 佐藤和彦, 橋田俊之, 高橋秀明, 山崎仲道: "水熱ホットプレス法によるアルミナセメントーリン酸塩結合固化体の合成" 日本セラミックス協会学術論文誌. 105-5. 424-427 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Sato, T.Hashida, H.Takahashi, N.Yamasaki: "Development of Hight Strength Calcium Aluminate-Phosphate Cement by Hydrothermal" J.Materials Science Letter. 16. 1464-1468 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 佐藤和彦, 橋田俊之, 高橋秀明, 山崎仲道: "水熱ホットプレス法を用いた廃コンクリート固化体のスラグ添加による高強度化" 日本セラミックス協会学術論文誌. 105-3. 262-264 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 橋田俊之、蔦森正憲、高橋秀明、和田千春: "マルチプルクラックによる短繊維ゾノライト複合材料の高靱化" 無機マテリアル. 3-262. 203-211 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] J.C.Rendon, T.Nishikawa, M.Saito, T.Hashida, H.Takahashi: "Mechanical Behavior of Ceramics Prepared by Means of Spark Plasma Sintering Method" Proceddings of Asian Pacific Conference for Fracture and Strength '96. 693-697 (1996)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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