GS43 延性-脆性遷移温度域材料の破壊靭性値の板厚効果に関する研究 : 標準試験片に対する(4δ_t,σ_<22c>)破壊評価基準の適用性検討

• 藤原 悠輝

  福井大学大学院工学研究科

• 飯井 俊行

  福井大学大学院工学研究科

書誌事項

タイトル別名

• GS43 Study of the Test Specimen Thickness Effect on Fracture Toughness of Ductile-Brittle Transition Temperature Region : Applicability of the (4δ_t,σ_<22c>) Criterion to Predict the Effect with Standard Test Specimens

抄録

This paper considered the test specimen thickness (TST) effect on the fracture toughness of a material J_c in the transition temperature region for 3 point bending (3PB) specimens. Elastic-plastic finite element analyses (FEA) with standard test specimens, which are standard because the specimen thickness-to-width ratio B/W was 0.5, were conducted. Based on the FEA results, it was demonstrated that the "planar" (4δ_t,σ_<22c>) failure criterion-which states that cleavage fracture after significant plastic deformation occurs when the crack opening stress δ_22 at a distance from the crack-tip that is equal to 4times the crack-tip opening displacement δ_t exceeds a critical value δ_<22c>-effectively explain the TST effect on J_c of standard test specimens.

収録刊行物

• M&M材料力学カンファレンス

  M&M材料力学カンファレンス 2013 (0), _GS43-1_-_GS43-5_, 2013

  一般社団法人 日本機械学会

キーワード

• Fracture Toughness
• Size Effect
• Fracture Criterion
• Finite Element Analysis(FEA)
• Stress Distribution

詳細情報

• CRID: 1390001205871646592
• NII論文ID: 110009936515
• DOI: 10.1299/jsmemm.2013._gs43-1_
• ISSN: 24242845
• Web Site: https://www.jstage.jst.go.jp/article/jsmemm/2013/0/2013__GS43-1_/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可