Feasibility study of determining axial stress in ferromagnetic bars using reciprocal amplitude of initial differential susceptibility obtained from static magnetization by permanent magnets

Deng, Dongge; Wu, Xiaowen

doi:10.1016/j.jmmm.2017.10.039

Cited by 5 publications

(7 citation statements)

References 21 publications

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“…As it can be observed, it is cancelled for z = b . The second derivative with respect to z is (Equation [5]): for z = b it is reduced to (Equation [6]):…”

Section: Helmholtz Coilmentioning

confidence: 99%

“…For the convenience of analysis, for each bar of B500SD steel, instructions established by the standard UNE EN ISO 6892-1:2017 were followed. To define this model, it is necessary to use unit deflection in z direction (longitudinal direction of the bar), that is given by the expression (Equation [10]): and the elastic tension defined as (Equation [11]):…”

Section: Equipment Designed For Magnetization Measuringmentioning

confidence: 99%

“…In the first case, saturation magnetization decreases with increasing temperature and it will reach the Curie temperature, where the material loses its ferromagnetic properties to be replaced by paramagnetism (5). On the other hand, the general physical characteristics can be defined in terms of magnetic constants, that is to say, the tensed steel bar varies its magnetic character according to the magnitude and force direction with respect to its limit of elasticity (6).…”

Section: Introductionmentioning

confidence: 99%

“…One of the most important applications of these coils is the possibility of measuring the magnetic field generated by electronic devices, with the aim of studying its behaviour in wider systems (9). The magnetic field to be determined can be situated in the far or the near field region (10,11). Another important application of this type of coils is the inspection of ferromagnetic tubes, such as those used in oil wells or in perforation tubes, as they can be used to detect cracks if the magnetic saturation of material is reached (12).…”

Section: Introductionmentioning

confidence: 99%

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Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils

2021

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Steel is responsible for providing resistance to flexotraction to reinforced concrete structures. Steel is responsible for providing reinforced concrete structures with a flexural strength. For this reason, it is important to study its behaviour under different tensile states. This study used measuring equipment that was able to determine variations in magnetic properties of B500-SD steel bars during standard tensile tests. The magnetic field generated by a Helmholtz coil was collected through a secondary circuit. This enables the induced electromotive force to relate with the steel deflection stages when subjected to the tests. Moreover, it was possible to determine the variation of magnetic permeability when submitting 12mm and 16mm diameter bars to different tensile states. This method could prove extremely useful in determining the tensile state of ribbed steel bars that are embedded into the concrete structure.

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“…As it can be observed, it is cancelled for z = b . The second derivative with respect to z is (Equation [5]): for z = b it is reduced to (Equation [6]):…”

Section: Helmholtz Coilmentioning

confidence: 99%

Section: Equipment Designed For Magnetization Measuringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils

2021

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“…In this section, the experimental system of the AC magnetization is designed and constructed to test the relationship between the permeability and stress of the samples under the conditions of the alternating magnetization [18][19][20][21], as shown in fig. 3.…”

Section: Ferromagnetic Measurement Experiments Systemmentioning

confidence: 99%

Magnetic properties of ferromagnetic steels under different stress by the alternating current magnetization

Wei

Dao-xiang

et al. 2019

THERM SCI

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The alternating current magnetic characteristics of the ferromagnetic materials act a significant factor to reflect their stress states. To reveal the relationship between the stress and the magnetic properties of the ferrimagnetic steels, we deduce the relation of alternating current permeability and the detected voltage of the nine-feet probe by using the basic laws in magnetism and law of electromagnetic reaction, and then we use the nine-feet probe to design and build the electromagnetic measurement system. Next some corresponding experiments were carried out to test the induction voltage of the two kinds Q-steel samples under the different stress. The results were shown that there was a similar variation tendency of the detected voltage in the two kinds the Q-steel samples, the max different values of the detected voltage can be reach 150 mV in the Q215 sample and 280 mV in the Q275 sample, respectively. Therefore, with the help of the difference detected voltage we can check the stress state of the ferrimagnetic steels conveniently in the engineering.

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Quantum model for studying magneto-mechanical properties of a magnetically soft ferromagnet

Ignatiev

Лебедев

Орлов

et al. 2020

Journal of Magnetism and Magnetic Materials

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Feasibility study of determining axial stress in ferromagnetic bars using reciprocal amplitude of initial differential susceptibility obtained from static magnetization by permanent magnets

Cited by 5 publications

References 21 publications

Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils

Magnetic variation in construction steels under tensile stress. Empirical research with Helmholtz coils

Magnetic properties of ferromagnetic steels under different stress by the alternating current magnetization

Quantum model for studying magneto-mechanical properties of a magnetically soft ferromagnet

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