圧力技術
Online ISSN : 1347-9598
Print ISSN : 0387-0154
ISSN-L : 0387-0154
論文
炭素鋼における疲労限度と寿命の評価方法に関して
S. M. MOSHIAR RAHMAN名嘉 海人真壁 朝敏
著者情報
ジャーナル フリー

2021 年 59 巻 2 号 p. 52-60

詳細
抄録

There is a good correlation between the S-N curve and crack growth law in carbon steel. Also, the fatigue limit of that can be evaluated from the param-eters of hardness and crack initiation conditions. The crack initiation behavior is related to the distribution of microstructures and the sizes of inclu-sions. Therefore, when the fatigue limit and life of carbon steel are predicted, it is better to consider the initial crack length and crack growth behavior. In this study, one such case was investigated by push-pull with constant stress amplitude by using 0.45% carbon steel. The initial crack lengths were varied with the specimen used and testing conditions. The prediction method of the S-N curve from a corrected crack growth law in such case was pro-posed. Also, a method of prediction of fatigue limit and life from the point of safety was discussed in this study.

著者関連情報
© 2021 一般社団法人 日本高圧力技術協会
次の記事
feedback
Top