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<p>This study investigates magnetic signal variations in steel wire ropes under weak magnetic excitation with non-coaxial stress and magnetic field orientations. An enhanced magnetoelastic coupling model is developed by integrating the Jiles–Atherton theory and introducing an angular parameter θ to characterize non-coaxial magnetization effects. Finite element analysis via ANSYS and static tensile tests validate the model’s efficacy. Results demonstrate that θ critically governs tangential signal: tangential signal amplitudes increase monotonically with θ, while defect-associated peak-to-valley differences exhibit θ-dependent modulation. This study reveals how the effective field changes induced by θ drive the coupling of magnetic permeability changes and stress fields, establishing a multi-scale energy competition mechanism involving magnetoelasticity and magnetic anisotropy. These findings advance theoretical frameworks for magnetic flux leakage detection and provide methodological guidance for quantitative defect evaluation in complex magnetic environments. This provides the possibility for quantitative assessment of defect status in the future.</p>

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Mechanism and Quantitative Evaluation of Magneto-Mechanical Coupling Detection for Steel Wire Rope Defects Under Non-coaxial Weak Magnetic Excitation

  • 期刊论文

  • 发表日期：

    2025年8月12日

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  • Yiliu Qu,
  • Juwei Zhang,
  • Hangyu Li

摘要

This study investigates magnetic signal variations in steel wire ropes under weak magnetic excitation with non-coaxial stress and magnetic field orientations. An enhanced magnetoelastic coupling model is developed by integrating the Jiles–Atherton theory and introducing an angular parameter θ to characterize non-coaxial magnetization effects. Finite element analysis via ANSYS and static tensile tests validate the model’s efficacy. Results demonstrate that θ critically governs tangential signal: tangential signal amplitudes increase monotonically with θ, while defect-associated peak-to-valley differences exhibit θ-dependent modulation. This study reveals how the effective field changes induced by θ drive the coupling of magnetic permeability changes and stress fields, establishing a multi-scale energy competition mechanism involving magnetoelasticity and magnetic anisotropy. These findings advance theoretical frameworks for magnetic flux leakage detection and provide methodological guidance for quantitative defect evaluation in complex magnetic environments. This provides the possibility for quantitative assessment of defect status in the future.