COMPARISON OF BENDING AND ROTATING BENDING FATIGUE OF LOW-CARBON STEEL

被引:0
|
作者
Angelova, Donka [1 ]
Yordanova, Rozina [1 ]
Krasstev, Dimiter [1 ]
Yordanov, Boyan [1 ]
机构
[1] Univ Chem Technol & Met Sofia, 8 Kl Ohridski, Sofia 1756, Bulgaria
关键词
short fatigue crack; low-carbon; low alloyed steel; rotation-bending and pure-bending tests; modelling; fatigue life;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Growth of short cracks on smooth specimen is observed under different loadings in rotation-bending low-carbon, low alloyed steel, and pure-bending fatigue tests were additionally performed. Special features of interaction between the surface cracks and the microstructure of investigated steel are studied. A model is proposed for growth rate of surface cracks vs. their lengths by a system of parabolic and linear functions. Experimental results and models of both fatigue types are compared and some predictions are made, showing a reasonable agreement between the calculated by the model and experimentally obtained fatigue life.
引用
收藏
页码:193 / 197
页数:5
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