Scanning Induction Thermography for Bearing Ring Under AC-DC Composite Magnetization

Xu, Zhaoyuan; Jiang, Quanquan; Zhang, Yuehong; Wu, Jianbo; Li, Ling; Qiu, Fushou; Wang, Zhe

doi:10.1007/s10921-022-00911-z

Cited by 2 publications

(2 citation statements)

References 30 publications

(30 reference statements)

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“…The high frequency ACMFL measurement has recently been applied to ferromagnetic material detection, and can improve the sensitivity and accuracy of defect detection [10]. Some scholars have conducted extensive research on sensor design [11,12], signal post-processing [13], frequency analysis [14] and excitation signal [15]. A part of the methods uses unsaturated excitation [16,17], whose advantage is mainly that the magnetic permeability of the ferromagnetic material can be changed, leading to different excitation.…”

Section: Introductionmentioning

confidence: 99%

A stress defect state measurement method based on low-frequency ACMFL excitation and Hall sensor array collection

Zhang

Jian

et al. 2023

Meas. Sci. Technol.

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The safety testing of ferromagnetic materials, which are the main materials for various machines and equipment, is particularly important. Stress concentration zone (stress defects) cause stress corrosion of ferromagnetic materials, and it also has the possible to cause direct damage to ferromagnetic materials. Estimation of stress sources state using electromagnetic nondestructive measurement method s is a critical and difficult problem. In this paper, a visual and intelligent identification method of stress defects in ferromagnetic materials by low frequency AC magnetic flux leakage (ACMFL) technique is proposed. A new three-point compression experiment was designed in this paper. Time-difference vision is established to analyze the ACMFL signal caused by stress defects. A visual transformed convolutional neural network (vt-CNN) deep learning algorithm has been proposed to identify grayscale patterns pre-processed by the time-difference vision. The results show that the method proposed in this paper elucidates the relationship between the time-difference vision of a stress defect and the stress source state of the mechanical stress. Our proposed method allows to analyze the pressure indenter size of the pressure source of stress defects.

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Section: Introductionmentioning

confidence: 99%

A stress defect state measurement method based on low-frequency ACMFL excitation and Hall sensor array collection

Zhang

Jian

et al. 2023

Meas. Sci. Technol.

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“…Xu et al [13] recently proposed scanning eddy current thermography under AC-DC composite magnetization to fulfill scanning detection and quantify the defect in bearing rings. Dirahoui et al [14] presented numerical and experimental investigations of the structural control of multilayer high-temperature superconducting (HTS) tapes. Ding et al [15] proposed a statistical approach for paint-coated S275 steel corrosion evaluation based on ECPT.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Numerical Study of Eddy Current Pulsed Thermography to Detect Damage of Deep-Sea Manned Pressure Hull

Zhang

Wang

et al. 2023

JMSE

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At present, research on pressure hull safety is mainly focused on the constitutive model of material properties and the evaluation model of structural parameters aiming at fatigue life prediction. The damage identification and quantitative evaluation methods of pressure hulls have not been studied. In this study, an eddy current thermal imaging method is introduced to detect micro-cracks in a deep-sea spherical pressure hull. In the detection method, temperature is used as a parameter to identify and quantify cracks. The temperature distribution around the cracks is studied using theoretical analysis and finite element simulation. A theoretical model is established using electromagnetic theory and heat transfer theory. Moreover, the temperature difference between the cracked area and the non-cracked area can be obtained by solving the heat conduction equation. A pulsed eddy current thermal imaging testing system is established, and a defective titanium alloy specimen is tested. At the same time, the temperature around the cracks in the specimens is simulated. The specimens have the same material and welding as a deep-sea spherical pressure hull. This paper discusses the possibility of its use in a pressure hull, which will provide a reference for micro-crack damage identification and quantitative evaluation of a deep-sea spherical pressure hull.

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Scanning Induction Thermography for Bearing Ring Under AC-DC Composite Magnetization

Cited by 2 publications

References 30 publications

A stress defect state measurement method based on low-frequency ACMFL excitation and Hall sensor array collection

A stress defect state measurement method based on low-frequency ACMFL excitation and Hall sensor array collection

Theoretical and Numerical Study of Eddy Current Pulsed Thermography to Detect Damage of Deep-Sea Manned Pressure Hull

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