不溶着切欠付３点曲げ（ＢＮＰ）試験によるボンドじん性の評価

• 安藤 柱

  横浜国立大学工学部

• 小倉 信和

  横浜国立大学工学部

• 小城 正輝

  横浜国立大学工学部大学院

書誌事項

タイトル別名

• Evaluation of Fracture Toughness of Coarse Grained HAZ by Means of Three Points Bend Specimen with Notch of Poor Penetration

抄録

A new test method has been proposed to evaluate bond's fracture toughness (δ_c) easily. Three points bend (BNP) specimens were extracted from welded test blocks with notch of poor penetration.<BR>The tip of the notch in BNP specimen was located on a fusion line in modified-Vee joint. Three points bend tests have been made on weldments of three kinds of structural steels, and fracture toughness of bond has been measured over a wide temperature range using BNP test specimens. Results can be summarrized as follows;<BR>1. To estimate the bond's toughness exactly, notch tip must be laid in the coarse grained HAZ zone, but it is wearisome to machine such notch.<BR>2. The notch tip of the BNP specimen is precisely on fusion line, and it is easy to prepare BNP specimen.<BR>3. Bond's toughness of BNP specimen largely depends on angular distortion of joint.<BR>4. Temperature dependenceiof bond's toughness can be easily estimated with safety, by using BNP specimen welded under high bending constraint to prevent the occurence of angular distortion during welding.

収録刊行物

• 溶接学会誌

  溶接学会誌 48 (5), 309-314, 1979

  一般社団法人 溶接学会

キーワード

• Metals and Alloys
• Surfaces, Coatings and Films
• Mechanical Engineering
• Mechanics of Materials

詳細情報

• CRID: 1390282681479431296
• NII論文ID: 130003763500
• DOI: 10.2207/qjjws1943.48.309
• ISSN: 18837204
• ISSN: 00214787
• 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