アルミナセラミックスの破壊靱性に関する研究

• 大原 秀晴

  東北大学工学部機械工学第II学科

• 横堀 寿光

  東北大学工学部機械工学第II学科

• 野尻 啓市

  東北大学工学部機械工学第II学科

書誌事項

タイトル別名

• Experimental and Analytical Studies on Fracture Toughness of Alumina Ceramics
• アルミナ セラミックス ノ ハカイ ジンセイ ニ カンスル ケンキュウ

抄録

Experimental and analytical studies on fracture toughness of alumina ceramics were carried out, and the following results and conclusions were obtained.<br>(1) The fracture toughness obtained by conventional fracture mechanics approach is apparent one, and increases with an increase of precrack length and shows a constant value in the range of larger crack length.<br>(2) This characteristics was explained by the interaction between a main precrack and inherent microcracks or voids near the crack tip.<br>(3) The microcrack is often induced near the tip of the notch during cutting under green sheet. The microcrack results in the deviation from the linear relation between load versus displacement, and decreases the fracture toughness.<br>(4) If we avoid the elimination of factors (2) and (3) would enhance the fracture toughness and decrease its scatter.

収録刊行物

• 窯業協會誌

  窯業協會誌 95 (1107), 1059-1066, 1987

  公益社団法人 日本セラミックス協会

キーワード

• Alumina ceramics
• Fracture toughness
• The effect of crack length
• Specimen size
• Notch
• Crack
• Defect

詳細情報

• CRID: 1390282680225695360
• NII論文ID: 110002313738
• NII書誌ID: AN00245650
• DOI: 10.2109/jcersj1950.95.1107_1059
• ISSN: 18842127
• ISSN: 00090255
• NDL書誌ID: 3156385
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3156385
• Web Site: http://www.jstage.jst.go.jp/article/jcersj1950/95/1107/95_1107_1059/_pdf
• 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