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The following topics are dealt with: power engineering; instrument making; technology, equipment and machine-building production automation; electromechanics; modern technical and information means in health services; material science; informatics and control in engineering systems; modern physical methods in science, engineering and medicine; quality management control; heat and power engineering.
On the chair of electric drive and electrical equipment the fundamental investigations connected with principles of electromechanical transformation of energy in capacity microelectric motors are made. In this work on the basis of the theory of an electric field and electromechanical transformation of energy the mathematical model of the step-type capacity motor with a rolling rotor was created.
This work proposed the method of nanostructuring superficial layer by using preliminary ultrasound treatment (UST) with subsequent surface strengthening by thermomechanical treatment. It has been supposed that preliminary superficial treatment by ultrasound will allow both increase in thickness of surface strengthened layer and formation of nonplane boundary between strengthened layer and matrix....
The aim of the paper is to discuss about the reacting powder materials. The rates of reaction processes in powders capable to nanostructures formation are higher then rates in powders with large particles. Reduction of the initial sizes of particles at preservation of all other parameters in a powder mixture can cause to change of mechano-chemical transformations regime. In case of powders with the...
After cracking, reinforced concrete (RC) behaves in a very different manner than plain concrete. Plain concrete cannot resist any tensile stresses after a full crack is formed, while the concrete between cracks in RC can still resist some tensile stresses. The contribution of concrete resistance between cracks is known as tension stiffening and plays an important role in reducing the post-cracking...
In this work. the photocatalytically active thin TiO2 films were produced by deposition of TiO2 by electrophoresis onto a transparent conducting electrode substrate. In order to avoid the filtration step of suspended particles after water treatment, TiO2 can be immobilized onto inert support material (Mills et al., 1999). The SnO2 or ITO (indium and tin oxides) - coated glass plate we used as a conducting...
When exerting magnetic and eddy current control of articles made of ferromagnetic materials one uses their magnetization up to the condition close to technical saturation as a rule. In the first case this operation refers to the main ones for the given kind of control, in the second case it is carried out as auxiliary one for decreasing influence- of magnetic heterogeneities on the control results...
Analysis of experimental data showed that at design of gear according to standard methods one observes significant wear in edge area (edge effect). Decreasing edge effect may be realized by finite elements method (FEM). For simulating interaction process and obtaining accurate solution in FEM accurate geometrical model is necessary. Gears were taken for investigation as the most spread driving mechanism...
In this paper, the author presented the proposed spectroscopic cell using light emitted diodes (using three different wavelengths) and three photodetectors as a light source. According to results (absorption data) from these detectors, mixture composition can be determined. Specific wavelength (in visible and infrared area) and number of light sources (LED as an example) was determined according to...
This article presents a study on the interaction of optical radiation with biological tissues applied to diagnosis and treatment of gullet diseases. Effects of esophageal tissue on ultraviolet (UV), visible, and infrared (IR) radiation are discussed.
The radiowave systems for detection and investigation of hidden underground objects are actively developed. One of the most effective systems for solving of this task is the subsurface radiotomography based on the synthetic aperture radar technology (SAR). Using of non-directed antennas allows detecting back-scattered radiation from all points of investigated medium. Thereby, while scanning of some...
According to (A.A. Tatarnikov and L.V. Burtelov, 2002) processing rubber mixtures in spite of their belonging to pseudoplastic mediums differs markedly from polymer melt processing. This difference lies in that the length of threaded part of the worm may be divided into three zones: pressure zone, buffer zone and supply zone. In pressure zone the worm is completely filled with the processed material...
The paper has analyzed the temperature field of multiphase induction motors stator under one or two phases breaking and rotation frequency decreasing. The motor thermal condition could be analyzed by using modern software. In this case ELCUT soft that allows to simulate thermal field in the motor stator core is used. ELCUT calculations are based on the thermal differential equations. When the necessity...
The paper presents the study of induction motor-induction generator system used in electric locomotives. Power properties were determined experimentally.
The technical problem of machine durability and maintainability forecasting is actual for car building to the full extent. Significant dimensions and weight of products and their high cost impose limitations on conducting extended full-scale tests aimed at getting statistically valid results. Experiments with finished products are usually carried out for checking this or that calculating procedure...
Design as a field of human activity is an extraordinary complex sphere with various elements and connections suggesting much knowledge in different branches of science for its realisation. To obtain this knowledge it is necessary to carry on investigations in different directions and organise heterogeneous systems of interaction.
Technocratism uses scientific conquering nature for scientific subjugation of a man. "The more rational, productive, technologically equipped and total is society management the more difficult it is to imagine the means and ways with the help of which individuals could destruct their slavery and get liberation" and "effectiveness of the system dulls individual's ability to recognize...
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