STATISTICAL INVESTIGATION OF THE BEHAVIOR OF MICROCRACKS IN CARBON-STEELS

被引：40

作者：

GOTO, M

机构：

[1] Department of Mechanical Engineering, Oita University, Oita, 870-11

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 1991年 / 14卷 / 08期

关键词：

D O I：

10.1111/j.1460-2695.1991.tb00715.x

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In order to clarify the statistical behaviour of microcracks, rotating bending fatigue tests of plain specimens were carried out using two kinds of carbon steel with different microstructures, normalized 0.21% C steel and heat-treated 0.45% C steel. The emphasis is to investigate separately the statistical properties of the initiation and propagation of microcracks through successive observations of the specimen surface. Results show that the microcrack initiation life distributions of normalized and heat-treated steels are expressed by a two-parameter Weibull distribution and a Weibull distribution of the mixed type, respectively. On the other hand, the microcrack propagation life distributions of these steels are represented by three- and two-parameter Weibull distributions, respectively. The three-parameter Weibull distribution is well fitted to the crack length distribution for both the steels.

引用

页码：833 / 845

页数：13

共 16 条

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