The microstructural evolution and ultrasonic guided wave transduction performance of annealed magnetostrictive (Fe83Ga17)99.9(NbC)0.1 thin sheets

Qi, Qingli; Shen, Gongtian; Zheng, Yu‐Xiang; Gao, Xuexu; Huang, Songling; Li, Jiheng; Tang, Zhifeng; Pan, Qingchuan

doi:10.1016/j.jmmm.2021.168938

Cited by 4 publications

(1 citation statement)

References 46 publications

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“…Cui used two square magnets of opposite polarities placed side by side, increasing the local magnetic flux density of the cutting coil, which was 1.9 times higher than that of conventional EMAT [ 22 ]. In 2022, Qi et al placed the nickel sheet between the permanent magnet and the coil, achieving an increase in magnetic flux [ 23 ]. Zhang et al developed an enhanced butterfly coil EMAT known as the Three-Square Permanent Magnets of Opposite Polarities (TSPM-OP).…”

Section: Introductionmentioning

confidence: 99%

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Guo

Chui

et al. 2023

Sensors

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The safety of railway transportation is crucial to social and economic development. Therefore, real-time monitoring of the rail is particularly necessary. The current track circuit structure is complex and costly, posing challenges to monitoring broken tracks using alternative methods. As a non-contact detection technology with a lower environmental impact, electromagnetic ultrasonic transducers (EMATs) have become a concern. However, traditional EMATs have problems such as low conversion efficiency and complex modes, which can limit their effectiveness for long-distance monitoring. Therefore, this study introduces a novel dual-magnet phase-stacked EMAT (DMPS-EMAT) design comprising two magnets and a dual-layer winding coil arrangement. The magnets are positioned at a distance equal to the wavelength of the A0 wave from each other, while the center distance between the two sets of coils beneath the transducer is also equal to the wavelength. After analyzing the dispersion curves of the rail waist, it was determined that the optimal frequency for long-distance rail monitoring is 35 kHz. At this frequency, adjusting the relative positions of the two magnets and the coil directly underneath to be one A0 wavelength can effectively excite a constructive interference A0 wave in the rail waist. The simulation and experimental results show that DMPS-EMAT excited a single-mode A0 wave, resulting in a 1.35-times increase in amplitude.

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Section: Introductionmentioning

confidence: 99%

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Guo

Chui

et al. 2023

Sensors

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Enhanced magnetostriction of < 100 >-oriented polycrystalline (Fe81Ga19)99.8Tb0.1(NbC)0.1 alloy by synergy strategy of trace NbC-doping and quenching treatment

Shen,

Li,

et al. 2025

Journal of Alloys and Compounds

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Development of a magnetostrictive Fe3O4-film electromagnetic acoustic transducer

Liang

Dixon

et al. 2023

Sensors and Actuators A: Physical

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The microstructural evolution and ultrasonic guided wave transduction performance of annealed magnetostrictive (Fe83Ga17)99.9(NbC)0.1 thin sheets

Cited by 4 publications

References 46 publications

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Enhanced magnetostriction of < 100 >-oriented polycrystalline (Fe81Ga19)99.8Tb0.1(NbC)0.1 alloy by synergy strategy of trace NbC-doping and quenching treatment

Development of a magnetostrictive Fe3O4-film electromagnetic acoustic transducer

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The microstructural evolution and ultrasonic guided wave transduction performance of annealed magnetostrictive (Fe83Ga17)99.9(NbC)0.1 thin sheets

Cited by 4 publications

References 46 publications

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Development of DMPS-EMAT for Long-Distance Monitoring of Broken Rail

Enhanced magnetostriction of < 100 >-oriented polycrystalline (Fe81Ga19)99.8Tb0.1(NbC)0.1 alloy by synergy strategy of trace NbC-doping and quenching treatment

Development of a magnetostrictive Fe3O4-film electromagnetic acoustic transducer

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Enhanced magnetostriction of < 100 >-oriented polycrystalline (Fe81Ga19)99.8Tb0.1(NbC)0.1 alloy by synergy strategy of trace NbC-doping and quenching treatment