The Thickness Effect of the Side-Grooved CCT Specimen : (Fracture Toughness of SUS316 Steel)

• MACHIDA Kenji

• KIKUCHI Masanori

• MIYAMOTO Hiroshi

抄録

J_IC tests were carried out on SUS 316 steel by means of the JSME R-curve method as well as the JSME streched-zone width (SZW) method. The effects of side-grooves on the J_in value at the onset of stable crack growth were investigated using CCT specimens of two thicknesses (B=1 mm and 2 mm). The ratio of the net thickness to the gross thickness was maintained at 0.5. The J_in value of the side-grooved specimen of 2 mm thickness was smaller than that of the standard CCT specimen. Further, as the thickness of the specimen became thinner, the J_in value decreased. In the case of 1 mm-thick CCT specimens with or without a side-groove, the contraction percentage of thickness was very large so that it was not appropriate to use these specimens for the fracture toughness test. In the case of the thin or side-grooved CCT specimens, the J-value, which is evaluated from the load versus displacement curve using Rice's formula, cannot estimate the J-integral at the central part of the specimen. Therefore, a J-integral estimation method would have to be established using 3-D elastic-plastic analysis.

収録刊行物

• JSME international journal. Ser. 1, Solid mechanics, strength of materials

  JSME international journal. Ser. 1, Solid mechanics, strength of materials 31 (4), 724-731, 1988

  一般社団法人 日本機械学会

キーワード

• Fracture
• Thickness Effect
• Fracture Toughness
• Side-grooved
• R-curve
• Stretched-zone Width
• J-integral

詳細情報

• CRID: 1390282680410299264
• NII論文ID: 110002348434
• NII書誌ID: AA10680585
• DOI: 10.1299/jsmea1988.31.4_724
• ISSN: 09148809
• Web Site: https://www.jstage.jst.go.jp/article/jsmea1988/31/4/31_4_724/_pdf
• 本文言語コード: en
• 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