Results 71 to 80 of about 62,131 (245)

Domain size effects in Barkhausen noise

open access: yes, 1998
The possible existence of self-organized criticality in Barkhausen noise is investigated theoretically through a single interface model, and experimentally from measurements in amorphous magnetostrictive ribbon Metglas 2605TCA under stress.
B. Alessandro   +14 more
core   +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

Operational Parameters for Sub-Nano Tesla Field Resolution of PHMR Sensors in Harsh Environments

open access: yesSensors, 2021
The resolution of planar-Hall magnetoresistive (PHMR) sensors was investigated in the frequency range from 0.5 Hz to 200 Hz in terms of its sensitivity, average noise level, and detectivity.
Taehyeong Jeon   +6 more
doaj   +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

A time series classification approach to non-destructive hardness testing using magnetic Barkhausen noise emission

open access: yesProduction Engineering, 2021
The process setup of manufacturing processes is generally knowledge-based and carried out once for a material batch. Industry experts observe fluctuations in product quality and tool life, albeit the process setup remains unchanged.
Martin Unterberg   +3 more
semanticscholar   +1 more source

Cobalt‐Based Metallic Glass Microfibers for Flexible Electromagnetic Shielding and Soft Magnetic Properties

open access: yesAdvanced Electronic Materials, Volume 10, Issue 2, February 2024.
A novel method is used to fabricate flexible Co66Fe4Mo2Si16B12 metallic‐glass microfibers for electronics, boasting a hardness of 11.31±0.60 GPa and an elastic modulus of 110.54±11.24 GPa. Their EMI shielding exhibits clear anisotropy with a factor of 5 and up to 25‐fold increased attenuation in the Ku band.
Elham Sharifikolouei   +10 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  

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

Characterization of the Fatigue Behaviour of Low Carbon Steels by Means of Temperature and Micromagnetic Measurements

open access: yesMetals, 2022
Investigations on low carbon (non- and low-alloy) steels were conducted in form of load increase tests (LIT) and constant amplitude tests (CAT) to find the correlation among material behaviour, mechanical load, and the type of NDT method.
Haoran Wu   +5 more
doaj   +1 more source

Barkhausen noise in the Random Field Ising Magnet Nd$_2$Fe$_{14}$B [PDF]

open access: yes, 2015
With sintered needles aligned and a magnetic field applied transverse to its easy axis, the rare-earth ferromagnet Nd$_2$Fe$_{14}$B becomes a room-temperature realization of the Random Field Ising Model.
Dahmen, K. A.   +3 more
core   +2 more sources

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