破壊評価線図法に基づく９％Ｎｉ鋼の延性破壊強度評価

• 町田 進

  東京大学工学部

• 松村 裕之

  川崎重工業(株)生産技術開発センター

• 道場 康二

  川崎重工業(株)生産技術開発センター

• 山川 武人

  川崎重工業(株)播磨工場

• 千田 豊

  川崎重工業(株)播磨工場

• 萩原 行人

  新日本製鐵(株)鉄鋼研究所

書誌事項

タイトル別名

• Ductile Fracture Strength Analysis of 9%Ni Steel by Failure Assessment Diagram.

抄録

A failure assessment diagram (FAD) approach is strongly expected to be useful for the simplified fracture assessment. The applicability of FAD approach to ductile fracture strength analysis was verified using a heavy section 9%Ni steel plate and its weld joints, in use for large scale LNG storage tank, in this paper. Various ductile fracture tests using compact and center cracked panel specimens were carried out in order to observe stable crack extension behavior and to estimate failure strength.<BR>The obtained results are summarized as follows :<BR>(1) When the assessment by means of Option 2 FADs is considered, an appropriate failure assessment curve (FAC) which takes account of actual fracture behavior should be selected.<BR>(2) The accuracy of assessment by FAD approach was strongly affected by the precision of estimation of limit load for Lr.<BR>(3) In case of 9%Ni steel, stable crack behavior agreed well with FAC regardless the specimen thickness.<BR>(4) Maximum load measured in experiments and its prediction by FAD were in good agreement regardless the specimen configuration. In case of 9%Ni weld joints, however, FAD approach showed a poor accuracy in the ductile tearing analysis and the maximum load prediction.

収録刊行物

• 溶接学会論文集

  溶接学会論文集 12 (3), 432-439, 1994

  一般社団法人 溶接学会

キーワード

• Failure assessment diagram
• Ductile fracture
• 9%Ni steel
• Weld joints
• Stable crack growth
• Fracture strength analysis
• Maximum load prediction
• Fracture assessment

詳細情報

• CRID: 1390001204723756672
• NII論文ID: 130003764450
• DOI: 10.2207/qjjws.12.432
• ISSN: 24348252
• ISSN: 02884771
• 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