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Source publication
We prepared a magnetic single-yoke probe combined with a hall sensor,
and measured hysteresis loops of specimens and detected distributions of leakage
magnetic flux using the perepared probe to investigate a potential of simultaneous
NDE for material characterization and micro defect. The undeformed and deformed
low carbon steels with/without a hol...
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The structural health monitoring of ferromagnetic materials is essential for controlling product quality. This paper presents the first known characterisation, utilising magnetic induction spectroscopy, of the magnetic permeability of ferromagnetic materials, a property that can facilitate such monitoring. Magnetic induction coils are interrogated...
Citations
The equivalent indirect hysteresis cycle (
$B_{\mathrm {ec}}$
–
$H$
cycle) obtained from the distortion of the voltage measured in the excitation coil facilitates the implementation of magnetic nondestructive characterization systems reducing hardware and error sources, as pick-up coils and their conditioning stages are not necessary. The aim of this article is to propose a sine-fitting (SF) algorithm in order to obtain the
$B_{\mathrm {ec}}$
–
$H$
cycles for nondestructive testing applications. Although the parameters of
$B_{\mathrm {ec}}$
–
$H$
cycles are not an accurate measurement of magnetic properties, they are equivalent to those of the indirect hysteresis cycles and thus are sensitive to different material processing variables. The
$B_{\mathrm {ec}}$
–
$H$
cycles of low carbon, dual phase, and ultrahigh strength steels obtained using SF and synchronous demodulation (SD) algorithms are compared. The parameters of
$B_{\mathrm {ec}}$
–
$H$
cycles obtained using the SF algorithm evidence greater sensitivity to material processing variables and are linearly correlated with parameters of indirect hysteresis cycles.
