scholarly journals Monitoring of the Impacts of Used Materials for Resulting Attributes of an Electric Motor Created via Additive Technology

TEM Journal ◽  
2020 ◽  
pp. 826-830
Author(s):  
Jozef Török ◽  
Martin Pollák ◽  
Monika Töröková ◽  
Zuzana Murčinková ◽  
Marek Kočiško
Keyword(s):  
Magnetic Field ◽  
3D Printing ◽  
Electric Motor ◽  
Additive Technologies ◽  
Additive Technology ◽  
The Individual ◽  
The Magnetic Field

The article discusses the possibilities of production of a brushless electric motor with usage of additive technologies and verification the functionality of the design. A few electromotor stators have been produced by 3D printing. They were made of PLA plastic with different admixtures to increase the intensity of the magnetic field. The contribution at the end offers a comparison comprising the individual measurements and the efficiency of the electric motor.

scholarly journals Possible influence of variations in the geomagnetic field on migration paths of snow buntings

2019 ◽  
Vol 19 (2) ◽  
pp. 195-201
Author(s):  
Chris M. Hall ◽  
Magnar G. Johnsen
Keyword(s):  
Magnetic Field ◽  
Geomagnetic Field ◽  
Flight Time ◽  
Short Term ◽  
Breeding Grounds ◽  
Declining Populations ◽  
Plectrophenax Nivalis ◽  
The Individual ◽  
Magnetic North ◽  
The Magnetic Field

AbstractA hypothesis is proposed wherein changes in the Earth's magnetic field affect the migratory paths of snow buntings (Plectrophenax nivalis), and in particular from wintering grounds in the Russian/Ukrainian steppes to breeding grounds on Svalbard and with a typical stopover in Finnmark in northern Norway. If one were to assume ignorance of the secular movement of the magnetic north pole approximately 1500 km northwards between 1908 and 2020, the magnetoreceptor contribution to snow buntings' navigation would result in winter-to-summer migratory paths progressively further to the East. In turn, this could be a contributing factor to declining populations in Finnmark and favouring a more frequent flightpath over the Kola Peninsula. On the other hand, short-term perturbations in the magnetic field (i.e. induced by solar activity) and therefore existing for a relatively small proportion of the flight time (if at all) for the individual migrations legs seem unlikely to influence the stopover locations significantly. Even so, these space-weather induced variations cannot be disregarded, particularly for success in reaching Svalbard.

scholarly journals Solitary potential structures observed in the magnetosheath by the Cluster spacecraft

2003 ◽  
Vol 10 (1/2) ◽  
pp. 3-11 ◽  
Author(s):  
J. S. Pickett ◽  
J. D. Menietti ◽  
D. A. Gurnett ◽  
B. Tsurutani ◽  
P. M. Kintner ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Time Series Data ◽  
Broad Band ◽  
Low Frequency ◽  
Bow Shock ◽  
Local Magnetic Field ◽  
Series Data ◽  
The Individual ◽  
Almost All ◽  
The Magnetic Field

Abstract. Bipolar pulses of ~ 25-100 µs in duration have been observed in the wave electric field data obtained by the Wideband plasma wave instrument on the Cluster spacecraft in the dayside magnetosheath. These pulses are similar in almost all respects to those observed on several spacecraft over the last few years. They represent solitary potential structures, and in this case, electron phase space holes. When the time series data containing the bipolar pulses on Cluster are transformed to the frequency domain by a windowed FFT, the pulses appear as typical broad-band features, extending from the low-frequency cutoff of the bandpass filter, ~ 1 kHz, up to as great as 20-40 kHz in some cases, with decreasing intensity as the frequency increases. The upper frequency cutoff of the broad band is an indication of the individual pulse durations (1/f). The solitary potential structures are detected when the local magnetic field is contained primarily in the spin plane, indicating that they propagate along the magnetic field. Their frequency extent and intensity seem to increase as the angle between the directions of the magnetic field and the plasma flow decreases from 90°. Of major significance is the finding that the overall profile of the broad-band features observed simultaneously by two Cluster spacecraft, separated by a distance of over 750 km, are strikingly similar in terms of onset times, frequency extent, intensity, and termination. This implies that the generation region of the solitary potential structures observed in the magnetosheath near the bow shock is very large and may be located at or near the bow shock, or be connected with the bow shock in some way.

scholarly journals Photospheric magnetic structure of coronal holes

2019 ◽  
Vol 629 ◽  
pp. A22 ◽  
Author(s):  
Stefan J. Hofmeister ◽  
Dominik Utz ◽  
Stephan G. Heinemann ◽  
Astrid Veronig ◽  
Manuela Temmer
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Coronal Hole ◽  
Magnetic Structure ◽  
Coronal Holes ◽  
Line Of Sight ◽  
Magnetic Elements ◽  
Background Magnetic Field ◽  
The Individual ◽  
The Magnetic Field

In this study, we investigate in detail the photospheric magnetic structure of 98 coronal holes using line-of-sight magnetograms of SDO/HMI, and for a subset of 42 coronal holes using HINODE/SOT G-band filtergrams. We divided the magnetic field maps into magnetic elements and quiet coronal hole regions by applying a threshold at ±25 G. We find that the number of magnetic bright points in magnetic elements is well correlated with the area of the magnetic elements (cc = 0.83 ± 0.01). Further, the magnetic flux of the individual magnetic elements inside coronal holes is related to their area by a power law with an exponent of 1.261 ± 0.004 (cc = 0.984 ± 0.001). Relating the magnetic elements to the overall structure of coronal holes, we find that on average (69 ± 8)% of the overall unbalanced magnetic flux of the coronal holes arises from long-lived magnetic elements with lifetimes > 40 h. About (22 ± 4)% of the unbalanced magnetic flux arises from a very weak background magnetic field in the quiet coronal hole regions with a mean magnetic field density of about 0.2−1.2 G. This background magnetic field is correlated to the flux of the magnetic elements with lifetimes of > 40 h (cc = 0.88 ± 0.02). The remaining flux arises from magnetic elements with lifetimes < 40 h. By relating the properties of the magnetic elements to the overall properties of the coronal holes, we find that the unbalanced magnetic flux of the coronal holes is completely determined by the total area that the long-lived magnetic elements cover (cc = 0.994 ± 0.001).

scholarly journals Polarization Observations of Supernova Remnants

1974 ◽  
Vol 60 ◽  
pp. 335-346 ◽  
Author(s):  
D. K. Milne ◽  
John R. Dickel
Keyword(s):  
Magnetic Field ◽  
Faraday Rotation ◽  
Supernova Remnants ◽  
Power Structure ◽  
Total Power ◽  
Field Patterns ◽  
Angular Extent ◽  
The Individual ◽  
The Magnetic Field ◽  
Galactic Background

Polarization and total power at 5000 MHz and 2700 MHz have been obtained for 30 supernova remnants (SNR) using the 64-m radio telescope at Parkes. This large sample includes a range of SNR from the young bright objects (such as Kepler's SNR) through the old faint sources such as MSH 14-63. Among the old remnants, the individual SNR have very varied properties, but several general conclusions emerge from our study. (1) In many cases, the polarization of the galactic background is as strong as that of the SNR and can vary significantly over the angular extent of the SNR. (2) The Faraday rotation is generally small and varies quite uniformly across the source. (3) The magnetic field patterns, although associated with the SNR, do not show any particularly characteristic pattern or relations to the total-power structure of the source.

scholarly journals Investigation of Thermoplastic Polyurethane Finger Cushion with Magnetorheological Fluid for Soft-Rigid Gripper

Energies ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6541
Author(s):  
Marcin Białek ◽  
Cezary Jędryczka ◽  
Andrzej Milecki
Keyword(s):  
Magnetic Field ◽  
3D Printing ◽  
Permanent Magnets ◽  
Force Measurement ◽  
Thermoplastic Polyurethane ◽  
Magnetorheological Fluid ◽  
Fluid Viscosity ◽  
Element Analysis ◽  
Mr Fluid ◽  
The Magnetic Field

This paper presents a study of penetrating a pin into a magnetorheological fluid (MR) cushion focused on the force measurement. The research is supported by detailed finite element analysis (FEA) of the magnetic field distributions in several magnetic field exciters applied to control rheological properties of the MR inside the cushion. The cushion is a part of the finger pad of the jaw soft-rigid gripper and was made of thermoplastic polyurethane (TPU) using 3D printing technology. For the pin-penetrating setup, the use of a holding electromagnet and a magnetic holder were considered and verified by simulation as well as experiment. In further simulation studies, two design solutions using permanent magnets as the source of the magnetic field in the cushion volume to control MR fluid viscosity were considered. The primary aim of the study was to analyze the potential of using an MR fluid in a cushion pad and to investigate the potential for changing its viscosity using different magnetic field sources. The analysis included magnetic field simulations and tests of pin penetration in the cushion as an imitation of object grasping. Thus, an innovative application of 3D printing and TPU to work with MR fluid is proposed.

Electro Physical Hardening of Non Metallic Composite Materials in Additive Technology

2017 ◽  
Vol 265 ◽  
pp. 490-495
Author(s):  
I.V. Zlobina ◽  
N.V. Bekrenev ◽  
G.K. Muldasheva
Keyword(s):  
3D Printing ◽  
Strength Properties ◽  
Additive Technologies ◽  
Material Structure ◽  
Powder Materials ◽  
Additive Technology ◽  
Physical Hardening ◽  
Main Production ◽  
3D Printed ◽  
Physical Effects

The analysis of the prospects for the use of additive technologies in the production of aerospace equipment has been performed. It is shown that one of the main problems of implementation of these technologies in the main production is the lack of strength and endurance of 3D printing objects. The influence of electro physical effects of varying intensity on the strength properties of the objects from powder materials, formed by 3D printing has been researched. It is found that the electromagnetic field of medium intensity of the investigated range causes an increase in the flexural strength of the plates made of powder Zp130 impregnated with cyanoacrylate Z-Bond TM90, not less than 38%. Thus, a 24% decrease in pore size and reduction in their dispersion by almost 30% is noticed. It is shown that the composite material structure becomes denser with a large number of connections between the agglomerates. The increase in the number of connections, and the increased uniformity of the structure after the electrophysical influence is one of the mechanisms to improve the strength of 3D printed objects exposed to electro-physical influence.

scholarly journals ADDITIVE TECHNOLOGY IN CONSTRUCTION

2020 ◽  
pp. 33-42
Author(s):  
Yu.V. Denisova
Keyword(s):  
3D Printing ◽  
Quartz Sand ◽  
Additive Technologies ◽  
Additive Technology ◽  
Dense Structure ◽  
Innovative Technologies ◽  
Basic Properties ◽  
Construction Market

the main innovative technologies of construction 3-D printing in modern construction are considered. This direction of research confirms the relevance of the selected issue. Development of compositions for building 3D printing allows for construction of not only individual constructions, but also buildings and constructions in general. Experimental compositions with effective for building print supplements will receive enough dense structure of concrete are developed. To assess the use of quartz sand for use in 3-d printers studies were conducted of their basic properties. The role of additive technologies in modern construction in the construction of buildings and structures that will lead to future changes in the construction market.

scholarly journals Study of the effect of electromagnetic field and radiation on the intensification of brewi ng processes

2021 ◽  
Vol 2 (3(58)) ◽  
pp. 44-46
Author(s):  
Vasilij Sidor ◽  
Svitlana Usatiuk ◽  
Olena Tyshchenko ◽  
Iryna Baranovska
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Electromagnetic Waves ◽  
X Rays ◽  
Barley Malt ◽  
Enzyme Preparations ◽  
The Individual ◽  
Increased Activity ◽  
Positive Effect ◽  
The Magnetic Field

The object of research is the enzymatic preparations Termamil and San-Super, malt and yeast. One of the most problematic places is that the action of the magnetic field and radiation can both stimulate the amylase activity of barley malt and cause its deactivation. During the study, a certain number of electrophysical factors were used, namely: laser radiation, which was carried out using a helium-neon laser, ultraviolet radiation – using a nitrogen gas laser, X-rays, a constant uniform magnetic field, ultrasound. Results have been obtained that confirm the positive effect of the magnetic field on the activation of the amyloletic activity of concentrated preparations. A study was also conducted in accordance with the effect of electromagnetic waves on the activation of enzymes in barley and wheat malt, which showed a positive effect. This is ensured by the fact that in the course of the study, thanks to experiments, the best duration of irradiation with electromagnetic waves and different types of radiation for enzyme preparations, malt and yeast was found. These methods have a number of features. This is the availability of the appropriate equipment and knowledge of the individual types of rays, magnetic fields and electromagnetic waves, and their potential effects on enzymes, as well as control of the exposure time and magnetic field load. Due to the action of electromagnetic waves and radiation, for a certain amount of time, it is possible to obtain an increased activity of enzymatic preparations. Compared to the fermentative preparations Termamil and San-Super, malt and yeast, which are not susceptible to the load of magnetic fields, electromagnetic waves and various types of radiation, the fermentative preparations Termamil and San-Super, malt and yeast, which were susceptible to the action of electromagnetic waves, as well as radiation show increased activity of action. At the same time, these preparations reduce the amount of costs and increase the yield of finished products, which will serve as a positive aspect for the economic sphere of the enterprise.

scholarly journals The creation of objects of the Kazakh culture with the use of additive technologies

2020 ◽  
Vol 329 ◽  
pp. 03022
Author(s):  
Railya Mukhamadeyeva ◽  
Yerzhan Akinov
Keyword(s):  
3D Printing ◽  
National Culture ◽  
Three Dimensional ◽  
Digital Technologies ◽  
Additive Technologies ◽  
Additive Technology ◽  
New Production ◽  
The Creation ◽  
The Republic ◽  
Gold Producer

The article presents material about the main prospects for the introduction and operation of new additive technology in the Republic of Kazakhstan. Additive technology (3D printing) is a global phenomenon that contributes to the development of new industries that use digital technologies. 3D printing is necessary for the production of quality products. Kazakhstan, the world’s fifteenth largest gold producer, does not actively promote the jewellery industry. Jewellery is an obligatory attribute of a family celebration and an element of the national culture of Kazakhstan. Jewellery products purchased in Kazakhstan are only 10% local; all the rest are from Russia, Turkey and Europe. New production of jewellery products using three-dimensional modelling and additive technologies should become an image industry in Kazakhstan, due to exclusivity and affordable cost

Analisis Motor Listrik Tipe Synchronous dengan Metode Komputasi

2021 ◽  
pp. 71-78
Author(s):  
James Julian ◽  
Fitri Wahyuni ◽  
Lomo Mula Tua ◽  
Nely Toding Bunga
Keyword(s):  
Magnetic Field ◽  
Electric Motor ◽  
Analytical Study ◽  
Technological Development ◽  
Synchronous Motor ◽  
Industrial Applications ◽  
Computational Method ◽  
Efficient Energy ◽  
Technological Advances ◽  
The Magnetic Field

In the current technological development, the electric motor is the most popular in various industrial applications. Electric motors today have evolved very quickly and have a significant impact on the lives of the wider community. The use of environmentally friendly and efficient energy is one of the reasons why this motorbike has become a pioneer of technological advances, especially in the automotive world. This research focuses on conducting a comprehensive analytical study on one type of electric motor, namely synchronous because it is widely applied in various conditions today. The analysis was carried out using a computational method by applying the finite element as a method of solving the magnetic field case involving Maxwell's equations and its impact on the torque generated in this synchronous motor. From the computation results, it is found that this synchronous motor does have a high torque when the magnetic field flux works constantly at 0.015 Wb. With an average torque generated by this synchronous motor of 1.5 kW.

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