Results 61 to 70 of about 2,523,401 (193)

High Magnetic Sensitivity at the Coercive Field Induced by Shear Horizontal SAW in Polycrystalline FeGa Films

open access: yesAdvanced Materials Technologies, Volume 10, Issue 18, September 18, 2025.
A theoretical framework links stress‐induced changes in the Young's modulus of Fe₇₂Ga₂₈ layers to their magnetization dynamics under SH‐SAW excitation. This interaction produces a sharp sensor response near the coercive field, highlighting FeGa's magnetoelastic sensitivity.
Juan Diego Aguilera   +9 more
wiley   +1 more source

Magnetic Non-destructive Testing of Plastically Deformed Mild Steel

open access: yesAdvances in Electrical and Electronic Engineering, 2004
The Barkhausen noise analysis and coercive field measurement have been used as magnetic non-destructive testing methods for plastically deformed high quality carbon steel specimens.
Jozef Pala, Jan Bydzovsky, Tibor Smida
doaj  

Control of flux in magnetic circuits for Barkhausen noise measurements [PDF]

open access: yesMeasurement Science and Technology, 2007
The consistency of magnetic Barkhausen noise (MBN) measurements under applied sinusoidal magnetic field control and sinusoidal magnetic circuit flux control was investigated under variable circuit permeability conditions. A U-core electromagnet was used to provide the alternating magnetic excitation.
Steven White   +2 more
openaire   +1 more source

Low‐Noise, Unbiased Ferromagnetic‐Resonance‐Driven Thin‐Film Integrated Giant Magnetoimpedance Sensors

open access: yesAdvanced Materials Technologies, Volume 10, Issue 14, July 22, 2025.
Utilizing a novel (Ni81Fe19/Ti)4/Cu/(Ni81Fe19/Ti)4 thin‐film multilayer with low coercive field, low damping and a superior GMI ratio, a compact, low‐noise unbiased FMR‐driven integrated GMI sensor with a superior magnetic noise performance of ≈100 pT/√Hz is first demonstrated, owing to reduced phase noise from well‐defined aligned magnetic domains and
Bin Luo   +8 more
wiley   +1 more source

Correlation between Barkhausen Noise and plastic deformation in TRIP 800 steel specimens

open access: yes, 2011
The aim of this study is to contribute to a better understanding of the dependence between Magnetic Barkhausen Noise and the plastic deformation of TRIP 800 steel samples.
Varouti, E, Eirini Varouti
core   +1 more source

Barkhausen Noise Analysis by Surrounding Coil [PDF]

open access: yes, 1995
The Barkhausen effect (or Barkhausen noise)[1], discovered in 1919, was initially identified as the revealing of irreversible and discontinuous changes of magnetisation induced by an external magnetic field[2].
A. Le Brun   +7 more
core   +1 more source

Barkhausen Noise Assessment of the Surface Conditions Due to Deep Hole Drilling and Their Influence on the Fatigue Behaviour of AISI 4140

open access: yesMetals, 2018
In many technical fields, high-strength steels like AISI 4140 are commonly used for highly dynamically loaded parts. Increasing demands on weight, performance and efficiency of the automotive industry lead to increasing demands on material properties ...
Nikolas Baak   +4 more
doaj   +1 more source

Barkhausen Noise‐ and Eddy Current‐Based Measurements for Online Detection of Deformation‐Induced Martensite During Flow Forming of Metastable Austenitic Steel AISI 304L

open access: yesEngineering Reports, Volume 7, Issue 1, January 2025.
Barkhausen noise (BN)‐ and eddy currents (EC)‐based sensor systems were tested to detect deformation‐induced martensite during flow forming of austenitic steel 304L. The results with EC have advantages over those with BN due to the good correlation with reference α′‐martensite measurements and the low influence of factors such as roughness.
Julian Rozo Vasquez   +6 more
wiley   +1 more source

Current Induced Barkhausen Noise Technique

open access: yes, 2019
Today Barkhausen Noise (BN) measurement is an efficient nondestructive technique for materials characterization. Usually the noise is detected by a coil while the magnetic hysteresis of the test material is cycled by an electromagnet.
Funke, Hendrik   +3 more
core   +1 more source

A Magnetoelastic Twist on Magnetic Noise: The Connection with Intrinsic Nonlinearities

open access: yesAdvanced Functional Materials, Volume 34, Issue 9, February 26, 2024.
Magnetoelastic nonlinearity significantly limits the performance of devices that use ferromagnetic films as sensitive elements. By introducing a comprehensive theory of magnetic noise in sensor systems, previously unrecognized noise sources linked to magnetoelasticity are revealed.
Elizaveta Spetzler   +2 more
wiley   +1 more source

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