压力容器2025，Vol.42Issue(4)：72-81,10.DOI:10.3969/j.issn.1001-4837.2025.04.010
基于交流电磁场的碳钢表面分叉裂纹监测技术研究
Research on monitoring technology for branched cracks on carbon steel surfaces based on alternating current field
摘要
Abstract
To address the limitations of traditional techniques in monitoring multi-directional crack propagation,a method based on alternating current field measurement(ACFM)is proposed for monitoring branched cracks on carbon steel surfaces.By constructing an ACFM model with orthogonal coil excitation,quantitative evaluation of cracks with different lengths,depths,and angles is achieved,enhancing monitoring capability for cracks parallel to the induced current direction.An orthogonal excitation simulation model is established to optimize monitoring excitation frequency and sensor layout.Hardware systems are designed and validated,ultimately constructing a branched crack monitoring system.Results show that the orthogonal monitoring method accurately identifies branched crack features,significantly improving monitoring reliability and precision.During monitoring of crack propagation with different sizes,the maximum crack deviation distance is determined as 12 mm.For vertical branched cracks,45° branched cracks,and 45° bent cracks,the maximum error in measured crack length is 14%,and the maximum error in tilt angle is 6.67%.This study provides technical references for monitoring branched cracks on carbon steel surfaces.关键词
碳钢/分叉裂纹/交流电磁场检测/监测技术/定量分析Key words
carbon steel/branched cracks/alternating current field measurement(ACFM)/monitoring technology/quantitative analysis分类
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杨会敏,国兆栋,刘伟达,李伟,王俊龙,袁新安,严宇,徐喆,彭炎,刘子淇..基于交流电磁场的碳钢表面分叉裂纹监测技术研究[J].压力容器,2025,42(4):72-81,10.基金项目
山东省本科教学改革研究项目(Z2021180,Z2022250) （Z2021180,Z2022250）
中国石油大学(华东)本科教学改革项目(QN2022009) （华东）
中国石油大学(华东)研究生教学改革项目(YJG2022014) （华东）
国家市场监督管理总局科技计划项目(2022MK071) （2022MK071）
