Evaluation of harmless crack size by Ando's equation

被引：3
作者：
Kim, Min-Heon [1 ]
Hyun, Jae-Yong [1 ]
Nam, Ki-Woo [2 ]
机构：
[1] Pukyong Natl Univ, Grad Sch, Busan 48513, South Korea
[2] Pukyong Natl Univ, Dept Mat Sci & Engn, Busan 48513, South Korea
来源：
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2020年 / 34卷 / 05期
关键词：
Ando's equation; Compressive residual stress; Fatigue limit; Harmless crack size; Peening; Threshold stress intensity factor; HIGH-STRENGTH STEEL; FATIGUE LIMIT; IMPROVEMENT;
D O I：
10.1007/s12206-020-0418-7
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The objective of the present study was to determine threshold stress intensity factor (Kth(l)R) of long cracks suitable for results of Nakagawa et al. and evaluate harmless crack lengths according to crack aspect ratios using the equation proposed by Ando et al. In this study, threshold stress intensity factors were obtained from relation to fatigue limit and crack depth. Evaluation results of fatigue limit using the determined threshold stress intensity factors were in good agreement with experimental results of the large crack. The harmless crack size could be predicted by using equation of Ando et al. with fatigue limit of non-shot peening (SP) smooth specimen and compressive residual stress.
引用
收藏
页码：1971 / 1977
页数：7
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