Engineering definitions of small crack and long crack at fatigue limit under tensile mean stress and a prediction method for determining the fatigue limit of a cracked Mg alloy

Shigeru Hamada, Takuya Kinoshita, Kazunori Morishige, Komei Hayashi, Toshiyuki Ishina, Hiroshi Noguchi

研究成果: Contribution to journalArticle査読

12 被引用数 (Scopus)

抄録

A simple method was proposed for evaluating the influence of mean stress on the fatigue limit of a cracked specimen using engineering approximations. Three types of crack sizes were introduced for evaluation: an "extra small crack," a "small crack," and a "long crack". The threshold stress intensity factor range was shown for each size based on crack non-propagation behavior using physical foundations. The effect of mean stress on the fatigue limit of the cracked specimen was formulated, and fatigue tests were performed on a magnesium alloy to check the approximation errors, which were found to be almost within 10%. Furthermore, the small-long crack transition was characterized experimentally.

本文言語英語
ページ(範囲)86-94
ページ数9
ジャーナルInternational Journal of Fatigue
56
DOI
出版ステータス出版済み - 1 1 2013

All Science Journal Classification (ASJC) codes

  • モデリングとシミュレーション
  • 材料科学(全般)
  • 材料力学
  • 機械工学
  • 産業および生産工学

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