Experiment on the relationship between the magnetic field variation and tensile stress considering the loading history in U75V rail steel

2015 ◽  
Vol 57 (12) ◽  
pp. 683-688 ◽  
Author(s):  
S Bao ◽  
S N Hu ◽  
L Lin ◽  
Y B Gu ◽  
M L Fu
Keyword(s):  
Magnetic Field ◽  
Tensile Stress ◽  
Rail Steel ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Loading History ◽  
The Relationship ◽  
The Magnetic Field

On the Configuration of the Magnetic Field of β CrB

1976 ◽  
Vol 32 ◽  
pp. 613-622
Author(s):  
I.A. Aslanov ◽  
Yu.S. Rustamov
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Radial Velocity ◽  
Magnetic Field Strength ◽  
Complex Shape ◽  
Rotation Period ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Secular Variations ◽  
The Magnetic Field

SummaryMeasurements of the radial velocities and magnetic field strength of β CrB were carried out. It is shown that there is a variability with the rotation period different for various elements. The curve of the magnetic field variation measured from lines of 5 different elements: FeI, CrI, CrII, TiII, ScII and CaI has a complex shape specific for each element. This may be due to the presence of magnetic spots on the stellar surface. A comparison with the radial velocity curves suggests the presence of a least 4 spots of Ti and Cr coinciding with magnetic spots. A change of the magnetic field with optical depth is shown. The curve of the Heffvariation with the rotation period is given. A possibility of secular variations of the magnetic field is shown.

Leakage magnetic field variation induced by inner surface grooves during loading in geomagnetic environment

2020 ◽  
Vol 64 (1-4) ◽  
pp. 1531-1538
Author(s):  
Bin Hu ◽  
Tao Yun Li ◽  
GongTian Shen ◽  
Benli Wan
Keyword(s):  
Magnetic Field ◽  
Outer Surface ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Leakage Magnetic Field ◽  
Inner Surface ◽  
Surface Groove ◽  
The Magnetic Field

The leakage magnetic field which induced by the inner surface groove during loading had been measured from the outer surface in geomagnetic environment. Compared the variation of the leakage magnetic field along the load with the location and development of the groove, it was found that two phenomena are relate to the magnetic field aberration. The relation can be described by the pink-pink value and the gradient of the magnetic field aberration. This result can be used to evaluate and monitor the inner defect by the magnetic field aberration characters.

Characterization of Stress-Induced Residual Magnetic Field in Ferromagnetic Steels

2015 ◽  
Author(s):  
Sheng Bao ◽  
Li Lin ◽  
Da Zhang ◽  
Meili Fu
Keyword(s):  
Magnetic Field ◽  
Tensile Tests ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Magnetic Curve ◽  
Ferromagnetic Steels ◽  
Different Characteristics ◽  
The Impact ◽  
Magnetic Field Variations ◽  
The Magnetic Field

In this research, tensile tests of three different steels were carried out to characterize the variation of the residual magnetic signals. To reduce the impact of initial magnetic field, all of the specimens were demagnetized before loaded. It was observed that the variations of magnetic signals along the surface of these steels demonstrate different characteristics both in the elastic and plastic stages. In the elastic stage, the magnetic field variation of Q235 and 45# steels had a nonlinear relationship with the applied stress and a simple linear relationship between stress and magnetic field appeared in Q345 steel. In the plastic stage, the magnetic field variation of Q235 was very complex and the magnetic field variations of Q345 and 45# steels demonstrated a process of systematic evolution. In addition, there existed a local dent of the magnetic curve in the necking position of the sample. When the sample was finally ruptured, one may evaluate the fracture position according to the features of the magnetic curve. Possible reasons were given for the different characteristics of magnetic field variations in different steels.

scholarly journals Effects of the magnetic field variation on the spin wave interference in a magnetic cross junction

AIP Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 056619 ◽  
Author(s):  
M. Balynskiy ◽  
H. Chiang ◽  
A. Kozhevnikov ◽  
G. Dudko ◽  
Y. Filimonov ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Spin Wave ◽  
Field Variation ◽  
Magnetic Field Variation ◽  
Wave Interference ◽  
The Magnetic Field

scholarly journals The Distribution of Fe, Cr and Si Over the Surface of Θ AUR

1986 ◽  
Vol 90 ◽  
pp. 137-140
Author(s):  
V.L. Khokhlova ◽  
J.B. Rice ◽  
W.H. Wehlau
Keyword(s):  
Magnetic Field ◽  
Field Variation ◽  
Line Profiles ◽  
Maximum Phase ◽  
Distribution Of Elements ◽  
Relationship Of ◽  
The Relationship ◽  
The Magnetic Field ◽  
Light Variability ◽  
Magnetic Variable

AbstractVery accurate spectroscopic line profiles have been obtained at various phases during the 3d.618 period of the magnetic variable Ap-star Θ Aur. These profiles were observed using a Reticon detector at the coudé focus of the 3.5 metre Canada-France-Hawaii telescope. The mapping of Si, Cr and Fe over the surface of the star was done by solving the Inverse Problem. Complex spotty structure has been revealed with the number of Fe spots found being as great as six. The distribution of Cr is found to be similar to Fe but with less detailed structure. Si is distributed quite differently from Fe and Cr. Discussion of the relationship of the magnetic field maximum phase and the light curve along with the maps of the distribution of elements suggests that the principal spots of Fe and Cr are in phase with the light variability but they are 90° out of phase with Si and the magnetic field variation. We are surprised by the Si variability seeming to be 90° out of phase with the light variability.

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