首页    期刊浏览 2024年12月12日 星期四
登录注册

文章基本信息

  • 标题:疲労き裂伝播速度に関する研究 (第2報) 平均応力の影響
  • 本地全文:下载
  • 作者:八木 順吉 ; 冨田 康光 ; 藤本 由紀夫
  • 期刊名称:日本造船学会論文集
  • 印刷版ISSN:0514-8499
  • 电子版ISSN:1884-2070
  • 出版年度:1981
  • 卷号:1981
  • 期号:149
  • 页码:250-259
  • DOI:10.2534/jjasnaoe1968.1981.250
  • 出版社:The Japan Society of Naval Architects and Ocean Engineers
  • 摘要:

    In our previous paper, assuming that phenomenon of fatigue crack propagation is continuous fatigue crack initiation at crack tip and crack initiation a life is used up when damage caused by cyclic strain near crack tip is accumulated and reached to a certain critical value during Δ N cycles, authors proposed a law- on the fatigue crack propagation rate under fully reversed loading neglecting the crack closure phenomenon. In this report, effect of mean stress on the fatigue crack propagation is discussed quantitatively. It is assumed that main factors of mean stress which affect the crack propagation rate are phenomena of cyclic creep and crack closure, and a new law on the crack propaga-tion rate is proposed. In order to prove the validity of the law, crack propagation rate curve calculated by the law were compared with experimental results obtained by several investigaters and fairly good agreements between them were found.

国家哲学社会科学文献中心版权所有