Results 161 to 170 of about 62,131 (245)
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Barkhausen noise from sintered permanent magnets
IEEE Transactions on Magnetics, 1996We introduce the well known Barkhausen technique as a tool for investigation of reversal processes in hard magnetic nucleation-type material. First results of our experiments show the occurrence of correlated grain switching not to be neglectible in the samples of sintered Nd-Fe-B as the volume fraction of multiple Barkhausen jumps reaches 50% near ...
G. Cuntze, H. Brendel, A. Hubert
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High resolution magnetic Barkhausen noise measurements
NDT & E International, 1994Abstract High resolution magnetic Barkhausen noise (MBN) measurements of slits in steel have been made using a small magnetic disk read head mounted in a U-shaped laminated sweep field core. Detection occurred for sweep fields oriented both parallel and perpindicular to a slit or through-cut.
Thomas W. Krause, D.L. Atherton
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Tension-induced magnetic Barkhausen noise morphology transition caused by pre-introduced strain
Journal of Applied Physics, 2023Magnetic Barkhausen noise (MBN) technology is widely used to reveal the microscopic mechanism of magnetomechanical phenomena, but the morphological transition induced by tension has not yet been confirmed by experimental measurements.
Zhijun Wang +5 more
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Magnetic Barkhausen noise measurements on magnetized pipeline steel
Insight - Non-Destructive Testing and Condition Monitoring, 2003Magnetic barkhausen noise measurements on magnetized pipeline steel. Magnetic Barkhausen Noise (MBN) is created by the irreversible motion of 180-degree domain walls. It is sensitive to residual and applied stress in ferromagnetic materials such as pipeline steel and has therefore been proposed as a viable non- destructive evaluation technique for ...
A Hsu, L C Clapham, D L Atherton
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2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), 2023
The magnetization and loss properties of magnetic material are closely related with the residual stress in the material, and the stress state in the material is hard to determine in advance.
Yitong Yao, Lin Li
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The magnetization and loss properties of magnetic material are closely related with the residual stress in the material, and the stress state in the material is hard to determine in advance.
Yitong Yao, Lin Li
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IEEE transactions on magnetics, 2022
The hard particles in metal matrix composite (MMC) coatings can greatly improve the hardness of materials and further affect the mechanical properties.
Zhengchun Qian +5 more
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The hard particles in metal matrix composite (MMC) coatings can greatly improve the hardness of materials and further affect the mechanical properties.
Zhengchun Qian +5 more
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Barkhausen Noise and Magnetic Amplifiers. II. Analysis of the Noise
Journal of Applied Physics, 1949The Barkhausen noise is calculated for ferromagnetic cores used in magnetic amplifiers. The method of analysis follows that used in the analysis of the shot effect. The signal-to-noise ratio for a typical magnetic amplifier circuit is calculated and compared with experiment.
Krumhansl, J. A., Beyer, R. T.
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Measurement science and technology
Due to the spatial resolution limitation of the magnetic Barkhausen Noise (MBN) sensor, the mechanism by which MBN signals are affected by the elastoplastic evolution process at the grain scale remains unclear. In this study, a high-resolution MBN sensor
Kongyang Zhu +4 more
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Due to the spatial resolution limitation of the magnetic Barkhausen Noise (MBN) sensor, the mechanism by which MBN signals are affected by the elastoplastic evolution process at the grain scale remains unclear. In this study, a high-resolution MBN sensor
Kongyang Zhu +4 more
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Insight - Non-Destructive Testing and Condition Monitoring, 2022
Longitudinal critically refracted (LCR) ultrasonic waves and magnetic Barkhausen noise (MBN) are two commonly used methods for measuring the residual stress of steel.
Yuhong Zhu +3 more
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Longitudinal critically refracted (LCR) ultrasonic waves and magnetic Barkhausen noise (MBN) are two commonly used methods for measuring the residual stress of steel.
Yuhong Zhu +3 more
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Barkhausen Noise and Magnetic Amplifiers. I. Theory of Magnetic Amplifiers
Journal of Applied Physics, 1949An analysis is made of the operation of magnetic amplifiers or non-linear transformers. Open circuit output voltages are calculated for transformers driven by a sinusoidal primary current, and also for sinusoidal primary current plus a direct current bias. The case of a loaded secondary is also considered and it is shown that there exist conditions for
Krumhansl, J. A., Beyer, R. T.
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