Magnets play a crucial role in a modern life; as we know, a vast number of devices are employed in the electromagnetic industry. In ancient times human beings experienced magnetic phenomena by utilizing natural iron minerals, especially magnetite. It was not until modern times that magnetic phenomena were appreciated from the standpoint of electromagnetics, to which many physicists such as Oers...

The present study investigates the mechanical and thermal behavior of polyurethane electrostatic powder coating waste reinforced epoxy composites. Different percentages (3, 6, 9 wt. %) composites were manufactured. mixture was mixed with a magnetic stirrer to ensure that dispersed well in epoxy, then placed under vacuum air bubbles removed. Tensile three-point tests performed determine changes ...

205 Diffusion MRI: Mitigation of Magnetic Field Inhomogeneities P. Marcon, K. Bartusek, Z. Dokoupil, E. Gescheidtova Department of Theoretical and Experimental Electrical Engineering, Faculty of Electrical Engineering and Communication, Brno University of Technology, Kolejni, 2906/4., 612 00, Brno, Czech Republic, [email protected] Institute of Scientific Instruments of the ASCR v.v.i., Kral...

This paper deals with the finite element analysis of a specific fault of the squirrel cage induction motors consisting in rotor bars breaking. Several variants of rotor bar faults are studied, using both quasi-static and transient magnetic field analyses. The numerical results in the reference case of healthy motor are experimentally validated by laboratory measurements.

Using the knowledge gained from the wave chaos theory, we present a simple modification of the shape of a reverberation chamber (RC) consisting in inserting a metallic hemisphere on a cavity wall. The presented simulation results show a significant improvement of the field statistical properties, and this without resorting to a mode stirrer.

An intrinsic reverberation chamber with non-parallel walls, ceiling not parallel to the floor, at most two walls placed perpendicular and with fixed field diffusers is presented. Inside this room no eigenmodes exist and a diffuse, statistically uniform field is created without the use of a mechanical mode stirrer. As a result, test time can be reduced drastically compared to mode stirred reverb...

We study the stationary state of Hall devices composed a load circuit connected to lateral edges Hall-bar. follow approach developed in previous work (Creff et al. J. Appl. Phys 2020) which ideal bar is defined by minimum power dissipation principle. The presence both and magnetic field induces injection current: so-called current. Analytical expressions for longitudinal transverse currents are...

The industrial crystallisation of well soluble substances is often dominated by secondary nucleation, in particular contact nucleation, and crystal growth. In different crystallisers types the attrition is mainly caused by the crystals impact onto stirrer blades, pumps, etc. The ultimate objective is to quantitatively describe a crystallization process, which is governed by the formation and gr...