This paper reports the measurement and modelling of magnetic properties of SOMALOY 500, a soft magnetic composite (SMC) material, under different 2D vector magnetisations, such as alternating along one direction, circularly and elliptically rotating in a 2D plane. By using a 2D magnetic property tester, the B-H curves and core losses of the SMC material have been measured with different flux de...

The following paper presents the results of modelling of the magnetic characteristics of isotropic (Ni–Zn ferrite) and anisotropic material (Fe40Ni38Mo4B18 amorphous alloy in as quenched state), both useful for sensor applications. For the modelling an extended Jiles–Atherton model was used. Extension of the model connects model’s parameter k, describing average energy required to break pinning...

In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief description of tools that are most commonly employed to infer the magnetic field in the solar atmosphere with emphasis in the photosphere of sunspots. We then address separately the global and local magnetic structure of suns...

Abstrac t This paper presents a measuring system capable of detecting longitudinal and circumferential defects using remote field eddy current in stainless steel tubes with an AMR sensor. An excitation coil is required with a time varying current to produce a magnetic field that penetrates the material on test. The experimental results from both defects are compared with other results for the s...

The performances of the synchronous reluctance motor are essentially dependent on the magnetic dissymetry of the machine, respectively of its rotor, as in [1], [2], [3], [4], [5], [6]. The last one is made from grain-oriented steel laminations, alternating with insulation and non-magnetic material. The fastening is realized with clamping plates and screws made from non-magnetic material (brass ...

One of the advantages of anisotropic soft materials is that their structures and, consequently, their properties can be controlled by moderate external fields. Whereas the control of materials with uniform orientational order is straightforward, manipulation of systems with complex orientational order is challenging. We show that a variety of structures of an interesting liquid material, which ...

The current distribution and the AC loss in a composite superconducting tape containing a layer from magnetic material is calculated and compared with experiments, showing a very good agreement. The situations of an alternating uniform applied field or a transport current are studied. The newly developed numerical model is an approximation to the critical state model, adapted for the applicabil...

introduction: public and occupational exposure to extremely low frequency (elf) electric and magnetic fields induced by electrical equipment is a significant issue in the environment and at the workplace due to their potential health effects on public health. the purpose of this study was assessment of the electric and magnetic fields intensities and determination of mental and psychological ef...

introduction: it has been reported that cardiovascular effects are among the possible health effects of being exposed to extremely low frequency electromagnetic fields (elf emss). material and methods: this study has been conducted to evaluate the long term effects of exposure to magnetic and electric fields on electrocardiogram signal changes. nine power transmission posts having different vol...