繊維２本および繊維４本のモデル複合材料を用いた繊維／樹脂界面はく離じん性の実験的評価とＦＲＰじん性への寄与の検討

• 小岩 康三

  神戸大学大学院工学研究科機械工学専攻

• 田中 拓

  神戸大学大学院工学研究科機械工学専攻

• 日和 千秋

  神戸大学自然科学系先端融合研究環

• 中井 善一

  神戸大学大学院工学研究科機械工学専攻

書誌事項

タイトル別名

• Evaluation of Fiber/Matrix Interfacial Fracture Toughness and Its Contribution to Composite Toughness by Using Two and Four-Fibers Model Composite Specimens
• センイ 2ホン オヨビ センイ 4ホン ノ モデル フクゴウ ザイリョウ オ モチイタ センイ ジュシ カイメン ハクリ ジンセイ ノ ジッケンテキ ヒョウカ ト FRP ジンセイ エノ キヨ ノ ケントウ

抄録

Fiber/matrix interfacial crack propagation behavior was investigated by using a model composite specimen. The model composite specimen used in the present study consists of two fibers bonded by matrix resin, and an interfacial crack can propagate without resin fracture in this specimen. Model composite specimens with an initial crack were successfully fabricated from glass fibers of about 200∼400μm in diameter and vinylester resin. Crack propagation tests were carried out by the DCB method for mode I loading and the ELS method for mode II. The average value of interfacial fracture toughness obtained from model composites with silane-treated fibers was much higher than that with untreated fibers for both mode I and II propagation. Thus, the characteristics of fiber/matrix interfacial crack propagation are successfully evaluated by the present test method. The crack propagation tests were also conducted by using another model composite specimen with four parallel fibers distributed in a square array in the cross section. As expected, fracture toughness of four-fibers model composites in which the crack propagation is a combination of interfacial debonding and matrix fracture was higher than interfacial fracture toughness because of large energy dissipation by matrix fracture. Using the interfacial fracture toughness, G_i, the fracture toughness of four-fibers model composites, G_c, and the fracture surface ratio of fiber/matrix debonding in four-fibers model composites, γ_i, the fracture toughness of matrix resin, G_m, was estimated on the basis of the rule of mixture, G_c = G_iγ_i + G_m(1 + γ_i).

収録刊行物

• 材料

  材料 57 (12), 1205-1211, 2008

  公益社団法人 日本材料学会

キーワード

• Composite materials
• FRP
• Interface
• Fracture toughness
• Model composite

詳細情報

• CRID: 1390282680394661888
• NII論文ID: 130002085722
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.57.1205
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 9751106
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9751106
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
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  • KAKEN
• 抄録ライセンスフラグ: 使用不可