Barkhausen noise hysteresis cycle: Theoretical and experimental understanding

Article Materials Science, Multidisciplinary

Effect of stress on the magnetic Barkhausen noise energy cycles: A route for stress evaluation in ferromagnetic materials

Patrick Fagan et al.

Summary: The analysis of magnetic Barkhausen noise energy hysteresis cycles is a nondestructive testing method that shows promise in evaluating internal mechanical stresses in ferromagnetic structural steels. The study demonstrates that coercivity is the most sensitive indicator of tensile stress. A multiscale model is developed to simulate stress-dependent anhysteretic behavior, which successfully reproduces the entire cycle. 2D simulation predictions indicate that uniaxial tensile stress can be efficiently identified within a specific angle range of the applied magnetic field. This modeling approach allows the determination of the optimal sensor orientation for different materials and stress configurations.

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS (2022)

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Article Materials Science, Multidisciplinary

What does a Barkhausen surface coil actually measure ?

Omar Ortega-Labra et al.

Summary: This study measures the normal and tangential components of the signals induced in the surface coil and analyzes them using a micro-mesoscopic model of Barkhausen effect. The results reveal that even a small tilt angle of the surface coil can affect both the applied field and the tangential components of the Barkhausen signal. These findings have important implications for the application of Barkhausen technology.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2022)

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Article Chemistry, Analytical

Characterization of Tensile Stress-Dependent Directional Magnetic Incremental Permeability in Iron-Cobalt Magnetic Sheet: Towards Internal Stress Estimation through Non-Destructive Testing

Borel Toutsop et al.

Summary: Iron-Cobalt ferromagnetic alloys are commonly used in aeronautical applications for electrical energy conversion, but their high magnetostrictive coefficients can lead to undesired behaviors. The study proposes using directional magnetic incremental permeability to assess internal stresses in a non-destructive way during production. By testing tensile stress stimuli and analyzing hysteresis cycles, researchers find that a pi/2 angle between magnetic excitations is the most ideal experimental situation for observing the effects of a homogeneous imposed tensile stress.

SENSORS (2022)

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Article Engineering, Electrical & Electronic

Construction of Energy Loops Using Magnetic Barkhausen Noise

Xiaoge Meng et al.

Summary: Magnetic Barkhausen noise (MBN), which contains microstructure information of materials, is widely used in nondestructive testing (NDT) of magnetic materials. In this letter, the authors propose a method to establish a proportional relationship between the MBN voltage signal V-B and energy loss, which reveals the physical mechanism of MBN and the irreversible magnetization process of magnetic materials.

IEEE MAGNETICS LETTERS (2022)

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Article Materials Science, Multidisciplinary

Multiscale modelling of the magnetic Barkhausen noise energy cycles

P. Fagan et al.

Summary: The article discusses the application of magnetic Barkhausen noise (MBN) control in materials characterization and non-destructive testing, as well as the method and results of studying hysteresis cycles through MBN energy. The study proposes a simulation method combining a multiscale model and the Jiles-Atherton theory to accurately simulate MBNenergy hysteresis cycles, showing promising results for a comprehensive simulation tool dedicated to MBN.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Low-frequency behavior of laminated electric steel sheet: Investigation of ferromagnetic hysteresis loops and incremental permeability

S. Zhang et al.

Summary: The frequency dependence of ferromagnetic hysteresis and core losses remains an open question, with different levels of accuracy in estimation possible. It is well acknowledged that below a certain frequency threshold known as quasi-static, the hysteresis cycle remains unchanged. Precisely evaluating this threshold is crucial for simulating and assessing magnetization behaviors at higher frequencies, and a new method using the magnetic incremental permeability butterfly loop is proposed for this purpose. This work represents a step forward in understanding the low-frequency magnetic behaviors of laminated electric steel sheets.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

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Article Materials Science, Multidisciplinary

Directional magnetic Barkhausen noise measurement using the magnetic needle probe method

B. Ducharne et al.

Summary: This study presents a directional local magnetic measurement technique for measuring the angular dependence of the magnetic Barkhausen noise in electrical and construction steels, and validates the effectiveness and directional selectivity of the method through experimental tests.

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS (2021)

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Article Engineering, Electrical & Electronic