ＡＳ４／ＰＥＥＫの横方向引張における微小き裂の発生と停留

• 江嶋 恒行

  京都大学大学院工学研究科機械物理工学専攻 松下電器産業(株)

• 小泉 匡永

  東邦ガス(株)

• 多田 直哉

  京都大学大学院工学研究科機械物理工学専攻

• 北村 隆行

  京都大学大学院工学研究科機械物理工学専攻

• 大谷 隆一

  京都大学大学院工学研究科機械物理工学専攻

書誌事項

タイトル別名

• Initiation and Arrest of Small Cracks of AS4/PEEK in Transverse Tension.
• AS4 / PEEK ノ ヨコホウコウ ヒッパリ ニ オケル ビショウ キレツ ノ ハッセイ ト テイリュウ

抄録

In order to investigate the fracture process of CFRP with high toughness, a plate specimen of a uni-directionally reinforced AS4/PEEK is subjected to transverse tension at room temperature. The results obtained are summarized as follows; (1) At 83% of fracture stress, small cracks are initiated along the interfaces of fiber and matrix in a group on or near the edge of specimen. (2) The cracks are semi-circular and they are arrested just after the initiation. (3) Although the number of the cracking regions increases as the applied stress increases, the area of each cracking region does not grow due to the crack arrest. (4) The boundary element analysis and the finite element analysis reveal that the arrest is caused by the cylindrical shape of the interface. (5) The cracks restart to grow and make coalescence when the stress field near the crack tip satisfies the condition of crack kinking. (6) The main crack formed brings about the specimen breaks down when the stress intensity factor reaches the macroscopic toughness, which is evaluated by DCB specimen.

収録刊行物

• 材料

  材料 48 (9), 1022-1028, 1999

  公益社団法人 日本材料学会

キーワード

• Composite material
• Small crack
• Interface crack
• Crack arrest
• Stress intensity factor

詳細情報

• CRID: 1390282680369046528
• NII論文ID: 110002293857
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.48.1022
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 4854153
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4854153
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可