Experimental study on static tensile and acoustic emission monitoring of corroded steel wires and cables

被引：0
|
作者：
Wan S. [1 ,3 ]
Fang Z. [1 ,3 ]
Zhou H. [1 ,2 ,3 ]
Song S. [4 ]
Chen B. [4 ]
Lu L. [4 ]
机构：
[1] National Key Laboratory of Green and Long-Life Road Engineering in Extreme Environment, Shenzhen University, Shenzhen
[2] China-Pakistan Belt and Road Joint Laboratory on Smart Disaster Prevention of Major Infrastructures, Southeast University, Nanjing
[3] Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University, Shenzhen
[4] Shenzhen-Zhongshan Link Administration Center, Zhongshan
来源：
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition) | 2024年 / 54卷 / 03期
关键词：
acoustic emission; bridge engineering; cable; corrosion; mechanical properties degradation;
D O I：
10.3969/j.issn.1001-0505.2024.03.007
中图分类号：
学科分类号：
摘要：
To more accurately perceive the corrosion of cables and evaluate the health status of cables in service,the correlation between the mechanical property degradation of corroded cables and the tensile acoustic emission (AE)characteristics is studied. Four corrosion degrees of high-strength steel wires and cables are fabricated by neutral salt spray corrosion,and the static tensile tests of corroded high-strength steel wires and model cables are conducted. The calculation method of cable carrying capacity considering the influence of corrosion and cable-making technology is proposed and verified by comparison with the measured value,and the process of tensile fracture is monitored by AE technology. The results show that the measured value,and calculated value of carrying capacity are in good agreement with each other,and the maximum relative error is only 5. 8% . With the increase of corrosion degree,the ductility property of the model cable decreases more significantly than the carrying capacity. The AE energy generated by broken wire is the largest,and the peak frequency of broken wire is maintained at about 75 kHz. Due to the degradation of ductility property of corroded steel wires,the counts and duration of broken wire increase with the increase of corrosion degree. © 2024 Southeast University. All rights reserved.
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页码：567 / 577
页数：10
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