Characteristics of Development of Fatigue Cracks in Steel under Low-Level Operation Loading

被引：0
|
作者：
Lebedinskii, S. G. [1 ]
Moskvitin, G. V. [1 ]
Pugachev, M. S. [1 ]
Polyakov, A. N. [1 ]
机构：
[1] Russian Acad Sci, Blagonravov Inst Mech Engn, Moscow 101990, Russia
来源：
JOURNAL OF MACHINERY MANUFACTURE AND RELIABILITY | 2020年 / 49卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
operational loading; low-alloyed steel; fatigue cracks; crack growth under low-level loading; railway structures;
D O I：
10.3103/S1052618820020107
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
An assessment method for characteristics of low-rate development of fatigue cracks under operational loading is proposed. The method is based on the decrease in the irregular loading level by conservation of its conformity during crack growth. The control factor of the loading decrease is the intrinsic increase in the compliance of a sample during crack growth by its fixed opening. The experimental dependences of the crack growth rate on the number of operation load blocks with a decrease in the loading level are obtained.
引用
收藏
页码：144 / 149
页数：6
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