[1]赵亚宇,周建庭,夏润川,等.基于磁记忆弱漏磁效应的钢绞线腐蚀检测[J].深圳大学学报理工版,2019,(No.3(221-346)):260-267.[doi:10.3724/SP.J.1249.2019.03229]
 ZHAO Yayu,ZHOU Jianting,XIA Runchuan,et al.The detection of corrosion of steel strands based on weak magnetic flux leakage effect of metal magnetic memory[J].Journal of Shenzhen University Science and Engineering,2019,(No.3(221-346)):260-267.[doi:10.3724/SP.J.1249.2019.03229]
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基于磁记忆弱漏磁效应的钢绞线腐蚀检测()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
期数:
2019年No.3(221-346)
页码:
260-267
栏目:
【土木建筑工程】
出版日期:
2019-05-20

文章信息/Info

Title:
The detection of corrosion of steel strands based on weak magnetic flux leakage effect of metal magnetic memory
作者:
赵亚宇1周建庭1夏润川1何沁2张泽宇2
1)重庆交通大学土木工程学院,重庆 400074;2)贵州高速公路集团有限公司,贵州贵阳 550000
Author(s):
ZHAO Yayu1 ZHOU Jianting1 XIA Runchuan1 HE Qin2 and ZHANG Zeyu2
1) School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, P.R.China 2) Guizhou Expressway Group CO., LTD, Guiyang 550000, Guizhou Province, P.R.China
关键词:
桥梁工程拉索腐蚀检测磁记忆漏磁提离值
Keywords:
bridge engineering stay cable corrosion detection metal magnetic memory magnetic flux leakage lift-off
分类号:
U446
DOI:
10.3724/SP.J.1249.2019.03229
文献标志码:
A
摘要:
拉索腐蚀问题一直是工程界亟待解决的难题,目前钢绞线腐蚀已成为影响拉索健康状况的关键因素. 为了有效检测钢绞线拉索腐蚀,将磁记忆无损检测技术引入到钢绞线拉索腐蚀检测中,通过试验分析了钢绞线腐蚀磁记忆漏磁信号分布变化特征,构建了基于磁记忆信号特征的钢绞线腐蚀度判别准则.结果表明,钢绞线试件发生腐蚀后,漏磁信号发生明显突变,在腐蚀中间区域漏磁信号切向分量出现极小值,且极值与试件腐蚀程度之间的关系呈Boltzmann函数分布;随着磁测传感器提离值的增大,钢绞线试件腐蚀漏磁信号急剧下降,提离值上轻微的差异,可造成漏磁信号切向分量极值产生较大波动.
Abstract:
The cable corrosion is a difficult problem to be solved urgently in the engineering field. At present, the corrosion of steel strands has become the key factor affecting the health of the cable. In order to effectively detect steel cables corrosion, metal magnetic memory (MMM) non-destructive testing technology was applied. Through experimental research, the distribution characteristics of corrosion magnetic flux leakage (MFL) signals were analyzed. Some criterions judging the corroded specimens based on the characteristics of MMM signals were constructed. The test results show that the MFL signals change obviously after the corroded specimens, and there is a minimum value in the curve of the tangential component in the middle of the corroded region. The relationship between the tangential component minimum value and the corrosion degree of the specimens presents the Boltzmann function distribution form. With the increase of the lift-off height of the magnetic sensor, the MFL signals of the corroded specimens decrease sharply. And a slight difference in the lift-off value can cause a large fluctuation in the minimum value of the tangential component of the MFL signals.

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更新日期/Last Update: 2019-04-22