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The Micromechanics Study on Fiber Reinforced Composites

Research Project

Project/Area Number 02650061
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 材料力学
Research InstitutionTohoku University

Principal Investigator

SEKINE Hideki  Tohoku University, Department of Aeronautics and Space Engineering, Professor, 工学部, 教授 (20005359)

Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1991: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1990: ¥1,300,000 (Direct Cost: ¥1,300,000)
KeywordsFiber Reinforced Composite / Micromechanics / Computational Simulation / Microfracture / Load-Displacement Curve / Fracture Toughness / Acid Environment / Crack Propagation Rate / 荷重一変位曲線 / 応力腐食 / アコ-スティック・エミッション / 応力腐食割れ
Research Abstract

The micromechanics study on fiber reinforced composites vas made. The main ts are summarized as follows :
1. Damage and Strength Deterioration of CFRP at Space Temperature
Fracture toughness tests were carried out for a cross ply carbon/epoxy laminate at temperatures 423K, 298K and 77K. During the fracture toughness tests, acoustic emission(AE)signals were detected. As a result, it was found that the fracture toughness value, obtained as the stress intensity factor which corresponds to the onset of abrupt increase of the accumulated AE energy, is largest at temperature 298K.
Computational simulation of deformation and fracture behavior of the CFRP laminate were carried out by use of a-probabilistic fracture model. Then, the result of the computational simulation of load-displacement curve agreed well with the experimental result. The serration was explained from the viewpoint of the scattering of debond stress and pull-out length.
2. Propagation Rate of a Stress Corrosion Crack in GFRP under Acid Environments
Stress corrosion crack tests were carried out on compact tension specimens of a cross ply E-glass/epoxy laminate in acid environment. Then, it was verified that the crack propagation rate da/dt is approximately expressed against the stress intensity factor K at crack tip in the form da/dt - AK^m where A and m are constants. Next, this relationship was examined from the viewpoint of micromechanics, and the influences of concentration of acid, temperature and fiber volume fraction on the propagation rate was clarified quantitatively.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (39 results)

All Other

All Publications (39 results)

  • [Publications] H.Sekine H.Suzuki T.Miyanaga J.H.Chen: "The Micromechanics Study of Crack Propagation in a Cross Ply E-Glass/Epoxy Laminate under Hydrochloric Acid" Fracture and Strength '90. 194-199 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 鈴木 寛,関根 英樹: "短繊維分散強化SMC複合材料の引張軟化則予測のための確率論的モデル" 日本機械学会 第68期全国大会講演会講演論文集A. 900ー59. 320-322 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 宮永 俊明,関根 英樹: "酸環境下におけるクロスプライガラスノエポキシ積層板の応力腐食き裂進展速度に及ぼす酸濃度および環境温度の効果に関する微視力学的研究" 日本複合材料学会 第15回複合材料シンポジウム講演要旨集. 73-76 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 堀田 智充,関根 英樹: "炭素繊維強化直交積層板の強度特性に関する研究" 日本機械学会材料力学講演会講演論文集. 900ー86. 123-125 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S.Kamiya,H.Sekine: "The Simulation of Damage Extension in Continuous Fiber-Reinforced Cross-Ply Laminates" JSME International Journal,Series I. 34. 214-220 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sekine, H.Suzuki: "Prediction of the Tension-Softening Relation for Short-Fiber-Reinforced SMC Composites by a Probabilistic Model" JSME International Journal,Series I. 34. 228-233 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 関根 英樹,神谷 庄司,佐々木 貴徳: "短繊維分散強化SMC複合材料の損傷の形成過程" 日本複合材料学会誌. 17. 118-124 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 関根 英樹,鈴木 寛,絹川 茂樹: "クロスプライCFRP積層板の変形・破壊挙動のシミュレ-ション" 日本複合材料学会1991年研究発表講演会予稿集. 43-44 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sekine: "Micromechanics Study of the Propagation Rate of a Stress Corrosion Crack in Cross Ply Glass/Epoxy Laminates under Acid Environments" Composites. 27-K-1 27-K-10 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 鈴木 寛,関根 英樹: "短繊維強化SMC複合材料の破壊エネルギ-と破壊挙動に関する確率論的研究" 第16回複合材料シンポジウム講演要旨集. 17-20 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 南 克哉,丹野 顯,伊地知 靖人,関根 英樹: "短繊維強化プラスチックスの変形挙動の数値シミュレ-ション" 日本機械学会第69期全国大会講演会講演論文集A. 910ー62. 314-316 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 神谷 庄司,関根 英樹: "連続繊維強化複合材料積層板の層厚と破壊挙動の相似則" 日本機械学会材料力学講演会講演論文集B. 910ー71. 109-111 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H.Sekine, H.Suzuki: "Tension-Softening Relation for Short-Fiber-Reinforced Composites" International Conference on Materials Engineering for Resources '91 Akita. 242-249 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 関根 英樹,丹野 顯,近藤 俊美,小沢 喜仁: "複合材の巨視的物性に関する複合則" 素材物性学雑誌. 4. 94-127 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine, H. Suzuki, T. Miyanaga and J. H. Chen: "The Micromechanics Study of Grack Propagation in a Cross Ply E-Glass/Epoxy Laminate under Hydro-chloric Acid" Fracture and Strength '90. 194-199 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Suzuki and H. Sekine: "Prediction of the Tension-Softening Relation for Short Fiber Reinforced SMC Composites by a Probabilistic Model" Proceedings of the 68th JSME Fall Annual Meeting. A900-59. 320-322 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Miyanaga and H. Sekine: "Micromechanics Study of the Effects of Concentration and Temperature on the Propagation Rate of a Stress Corrosion Crack in Cross Ply Glass/Epoxy Laminates under Acid Environments" Proceedings of the 15th Symposium on Composite Materials. 73-76 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Hotta and H. Sekine: "The Study of Strength of a Cross Ply Carbon/Epoxy Laminate" proceedings of the Conference on Materials and Mechanics. 900-86. 123-125 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Kamiya and H. Sekine: "The Simulation of Damage Extension in Continuous Fiber-Reinforced Cross-Ply Laminates" JSME International Journal, Series I. 34. 214-220 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine and H. Suzuki: "Prediction of the Tension-Softening Relation for Short-Fiber-Reinforced SMC Composites by a probabilistic Model" JSME International Journal, Series I. 34. 228-233 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine, S. Kamiya and T. Sasaki: "Formation Process of Damage in Random Short Fiber Reinforced SMC Composites" Journal of the Japan Society for Composite Materials. 17. 118-124 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine, H. Suzuki and S. Kinugawa: "Simulation of Deformation and Fracture Behavior in Cross Ply CFRP Laminates" Proceedings of the 1991 Annual Meeting of the Japan Society for Composite Materials. 43-44 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine: "Micromechanics Study of the Propagation Rate of a Stress Corrosion Crack in Cross Ply Glass/Epoxy Laminates under Acid Environments" Composites. 27-K. 1-10 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Suzuki and H. Sekine: "Probabilistic Study of Fracture Energy and Fracture Behavior of Short-Fiber Reinforced SMC Composites" Proceedings of the 16th Symposium on Composite Materials. 17-20 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] K. Minami, K. Tanno, Y. Ijichi and H. Sekine: "Numerical Simulation of Nonlinear Stress-Strain Relations for Short-Fiber Reinforced Plastics" Proceedings of the 69th JSME Fall Annual Meeting. A910-62. 314-316 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] S. Kamiya and H. Sekine: "The Law of Similarity on the Fracture Behavior of Continuous Fiber-Reinforced Composite Laminates with Different Ply Thickness" Proceedings of the Conference on Materials and Mechanics. B910-71. 109-111 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine and H. Suzuki: "Tension-Softening Relation for Short-Fiber-Reinforced Composites" International Conference on Materials Engineering for Resources '91 Akita. 242-249 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] H. Sekine, K. Tanno, T. Kondo and Y. Ozawa: "Law of Mixture for Macroscopic Properties of Composite Materials" Journal of the Society of Materials Engineering for Resources of Japan. 4. 94-127 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] 関根 英樹,鈴木 寛,絹川 茂樹: "クロスプライCFRP積層板の変形・破壊挙動のシミュレ-ション" 日本複合材料学会1991年研究発表講演会予稿集. 43-44 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Sekine: "Micromechanics Study of the Propagation Rate of a Stress Corrosion Crack in Cross Ply Glass/Epoxy Laminates under Acid Environments." Composites.27-K-1-27-K-10 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 鈴木 寛,関根 英樹: "短繊維強化SMC複合材料の壊破エネルギ-と壊破挙動に関する確率的研究" 第16回複合材料シンポジウム講演要旨集. 17-20 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 南 克哉,丹野 顯,伊地知 靖人,関根 英樹: "短繊維強化プラスチックスの変形挙動の数値シミュレ-ション" 日本機械学会第69期全国大会講演会講演論文集A. 910ー62. 314-316 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 神谷 庄司,関根 英樹: "連続繊維強化複合材料積層板の層厚と破壊挙動の相似則" 日本機械学会材料力学講演会講演論文集B. 910ー71. 109-111 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] H.Sekine,H.Suzuki: "TensionーSoftening Relation for ShortーFiberーReinforced Composites" Internatioal Conference on Materials Engineering for Resources '91 Akita. 242-249 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] 堀田 智充,関根 英樹: "炭素繊維強化直交積層板の強度特性に関する研究" 日本機械学会材料力学講演会講演論文集. 900ー86. 123-125 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 鈴木 寛,関根 英樹: "短繊維分散強化SMC複合材料の引張軟化則予測のための確率論的モデル" 日本機械学会第68期全国大会講演会講演論文集. 900ー59. 320-322 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 宮永 俊明,関根 英樹: "酸環境下におけるクロスプライガラス/エポキシ積層板の応力腐食き裂進展速度に及ぼす酸濃度および環境温度の効果に関する微視学的研究" 日本複合材料学会第15回複合材料シンポジウム講演要旨集. 73-76 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 関根 英樹,宮永 俊明: "GFRPの応力腐食によるき裂進展速度に関する潜在微小き裂を考慮した微視力学的研究" 材料. 39. 1545-1548 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 鈴木 寛,関根 英樹: "短繊維分散強化複合材料中の繊維のはく離および引抜けに関する確率論的研究" 日本機械学会論文集(A編). 57. 224-231 (1991)

    • Related Report
      1990 Annual Research Report

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Published: 1990-04-01   Modified: 2016-04-21  

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