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  • 标题:疲労き裂伝播に着目した設計基準に関する二, 三の考察
  • 本地全文:下载
  • 作者:越賀 房夫 ; 川原 正言
  • 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:1973
  • 卷号:1973
  • 期号:133
  • 页码:249-256
  • DOI:10.2534/jjasnaoe1968.1973.249
  • 出版社:The Japan Society of Naval Architects and Ocean Engineers
  • 摘要:

    In the present paper, the authors investigate many examples of two material constants, C and m , which are involved in the Paris Formula, da / dN = C (Δ K ) m . Some correlation exists between C and m , irrespective of variety in mechanical properties, metallographic structures, mean stress and compliance of loading system. Crystallographic features or other structure-insensitive characteristics may affect the correlation, but a definitely close one is considered available for the present proposal of design basis, as far as the conventional steels such as the hull-structural are concerned. Based on the C - m correlation, the authors demonstrate some formulation for evaluating the safety of hull structures. Loading spectrum, initial and final sizes of defect and threshold stress intensity factor are also taken into account.

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