Fatigue crack propagation characteristics of high-tensile steel wires for bridge cables

被引：12

作者：

Zheng, X. L. ^{[1
]}

Xie, X. ^{[1
]}

Li, X. Z. ^{[2
]}

Tang, Z. Z. ^{[3
]}

机构：

[1] Zhejiang Univ, Dept Civil Engn, Hangzhou 310058, Zhejiang, Peoples R China

[2] Kunming Univ Sci & Technol, Fac Civil Engn & Mech, Kunming 650504, Yunnan, Peoples R China

[3] Yangzhou Univ, Coll Civil Sci & Engn, Yangzhou 225127, Jiangsu, Peoples R China

来源：

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES | 2019年 / 42卷 / 01期

基金：

中国国家自然科学基金;

关键词：

cold-drawn eutectoid steel; fatigue crack propagation; high-tensile steel wire; LEFM; Walker equation; RESIDUAL-STRESSES; X-RAY; THRESHOLD; STRENGTH; BEHAVIOR; ELEMENT;

D O I：

10.1111/ffe.12901

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The viability of single edge cracked sheet test method for rapidly determining the crack propagation characteristics of steel wires was investigated. First, fatigue tests under 3 different stress ratios were conducted on the sheet specimens which were manufactured from a kind of widely used cable wires. The test data were analysed, and the crack growth rates of sheet specimens were constructed by Walker model. Then, a series of fatigue tests were performed on notched round-bar specimens to verify the predictability of Walker model parameters. Moreover, the experimental results obtained in different studies on crack propagation characteristics of steel wires were discussed. The results show that the crack propagation characteristics of sheet specimens behave a certain dependence on depth. The sheet crack growth laws can be well used to predict the fatigue life of notched bar specimens when the mechanical heterogeneity is considered. For bridge cable steels, the rational values for the exponent parameter of Paris law, m, should be close to 3.

引用

页码：256 / 266

页数：11

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