自動車焼結部品の高付価値化　鉄系焼結材料の切欠き疲労強度の破壊力学的解析

• 伊藤 勇一

  (株)豊田中央研究所

• 近藤 幹夫

  (株)豊田中央研究所

• 小川 一義

  (株)豊田中央研究所

• 粟野 洋司

  (株)豊田中央研究所

• 真鍋 明

  トヨタ自動車(株)

書誌事項

タイトル別名

• Fracture Mechanics Analysis for Fatigue Strength on Notched Specimen of Ferrous Sintered Materials.
• テツケイ ショウケツ ザイリョウ ノ キリカキ ヒロウ キョウド ノ ハカイ

抄録

A method of predicting fatigue strengths using fracture mechanics on noched components of ferrous sintered materials is investigated. By applying Lukas's formula for evaluation of AK and a intrinsic crack model for small crack propagation on notched components, a simple formula for predicting fatigue limits was derived. This method requires three material properties: the fatigue limit of smooth specimen, the threshold stress intensity range for long crack, and the threshold value of the effective stress intensity. For experimental verification, a notched specimen for fatigue tests as sintered was designed, and fatigue tests were conducted with notched specimens of ferrous sintered materials with two different pore sizes. The predicted fatigue limits are comparatively in good agreement with the experimental results.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 44 (5), 483-486, 1997

  一般社団法人 粉体粉末冶金協会

キーワード

• fatigue
• fracture mechanics
• ferrous sintered materials
• pore size

詳細情報

• CRID: 1390282681284116736
• NII論文ID: 10002013954
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.44.483
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4205773
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4205773
• 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