Magnetization of Steel Building Materials and Structures in the Natural Geomagnetic Field
Summary:
This paper presents the physical basis of the magnetic
properties of ferromagnetic materials and shows their
relationships with external geomagnetic field. It graphically
processes the experimental data detected by an HMR magnetometer.
Taking into account the natural geomagnetic field under
the effects of steel U profiles, variations of the natural
geomagnetic field in a steel structure building are indicated
and the potential existence of Sick Building Syndrome
(SBS) in these types of buildings is pointed out. Of fundamental
significance from the microscopic point of view, for themagnetisation
ofmetals (including steel) is the relationship that couples
the total moment of momentum J and the total magnetic
moment mtot, the electronic envelope of the atom. The
total magnetic moment is here not an integral
of movement and, considered from the point of view of
quantum mechanics, is not a factor simultaneously measurable
with the power and the total moment of the atom
momentum. What is called the effective magnetic moment
mG is therefore established as a projection of the vector
mtot into the direction of the opposite vector J, which
is sufficient to describe the basic magnetic phenomena
given by the relationship between vectors mG and J.
Format:
Pages : 6
Size: 1.25 mb
Author : E. Cermáková
Download:Magnetization of Steel Building Materials and Structures in the Natural Geomagnetic Field
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