Mechanism study of the residual stress evaluation of low-carbon steels using the eddy current magnetic signature method

Takeda, Susumu; Uchimoto, Tetsuya; Kita, Aoba; Matsumoto, Takanori; Sasaki, Toshihiko

doi:10.1016/j.jmmm.2021.168268

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…For bulk ceramics, the values range from 5 kV/mm to 15 kV/mm [51][52][53], while higher values have been successfully tested for single crystals [54]. In the case of thick films (typically those deposited to form multilayer capacitors), to maintain a safe level of the electric field, piezoelectric layers will usually be limited to 3 kV/mm [55], although some attempts on multi-layered capacitors have allowed tests up to 15 kV/mm [56].…”

Section: Energy Conversion Abilitymentioning

confidence: 99%

Ultimate electromechanical energy conversion performance and energy storage capacity of ferroelectric materials under high excitation levels

et al. 2022

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Section: Energy Conversion Abilitymentioning

confidence: 99%

Ultimate electromechanical energy conversion performance and energy storage capacity of ferroelectric materials under high excitation levels

et al. 2022

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“…Currently, there are a number of nondestructive testing (NDT) methods, such as x-ray diffraction [6], * Author to whom any correspondence should be addressed. ultrasonic waves [7], eddy currents [8], and metal magnetic memory [9], that can be used to measure the mechanical properties of materials, but there are limitations to their testing efficiency and sensitivity [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Theoretical model of magnetoacoustic emission considering the microstructure of ferromagnetic material

Zhang,

Jiao,

et al. 2023

Meas. Sci. Technol.

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Magnetoacoustic emission (MAE) holds great promise for evaluating the mechanical properties of ferromagnetic materials. To refine the problems of the current theoretical and numerical models of MAE, a theoretical MAE model that considers the microscopic dependence of the hysteresis properties is proposed in this paper. The microstructure (dislocation density and grain size) and the correlation of MAE jumps are considered and incorporated into the model. Then, the influences of magnetization parameters and microstructure parameters on the envelope of the MAE signal are analyzed by the proposed theoretical model. The proposed theoretical model is then fully evaluated by simulations and experiments. The MAE experiments are conducted on ferromagnetic specimens with different hardnesses, and the MAE signals with different hardnesses are simulated by inverting the basic parameters of the MAE model with the genetic algorithm. Further, the crucial hysteresis parameters of the specimens are calculated using the results of microscopic measurements and the calculated parameters agree well with inversion results from experimental signals. The results demonstrate that the proposed theoretical model is valid for the MAE signal simulation. The trends of different hardnesses can be predicted by the MAE simulation signals. Moreover, the model can be used for theoretical analysis of the microscopic dependence of the MAE signal.

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“…In the future, a test is planned to help determine the residual stress state and detect possible internal defects in welds. For this purpose, ultrasonic (UT) and eddy current (ET) methods will be used using changes in the impedance of an electromagnetic coil eddy current probes can detect very small stress changes in ferromagnetic steels using the magnetoresistive effect based on the measurement of impedance changes [32,33]. A comparison of the residual stresses tested can provide early indications of the stress state and possible failure.…”

mentioning

confidence: 99%

Using Metal Magnetic Memory to Evaluate the Effect of Welding Method and Weld Temperature on Magnetic Field Strength in Structural Steel

Wieczorska

Kosoń-Schab

2023

Materials

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Tests of welds are carried out inter-operatively, during the execution of the steel structure, as well as after the structure is welded, but even before its assembly. Steel structures already in service are also examined to detect potential cracks, delamination, or corrosion loss of thickness having the effect of weakening the mechanical strength of the structure. Such examinations are some the elements that comprise a structural health assessment. In this paper, the metal memory method was used to evaluate the effect of the welding method and weld temperature on the change in magnetic field strength. S235JR structural steel was used for the study, which was subjected to milling and MMA, TIG, and MIG welding. The results of measurement experiments carried out for each welding method are presented as graphs.

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Mechanism study of the residual stress evaluation of low-carbon steels using the eddy current magnetic signature method

Cited by 9 publications

References 14 publications

Ultimate electromechanical energy conversion performance and energy storage capacity of ferroelectric materials under high excitation levels

Ultimate electromechanical energy conversion performance and energy storage capacity of ferroelectric materials under high excitation levels

Theoretical model of magnetoacoustic emission considering the microstructure of ferromagnetic material

Using Metal Magnetic Memory to Evaluate the Effect of Welding Method and Weld Temperature on Magnetic Field Strength in Structural Steel

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