Sergey V. Levin

High Power Ultrasonic Oscillatory Systems

In paper the reasons limiting raise of productivity ultrasonic processes by increase of energy supplied into liquid technological medium of acoustic vibrations in a regime of developed cavitation are analysed. It is shown, that the solution of a problem is creation of special ultrasonic oscillatory systems with the increased surface radiation of multiresonant working tools. Creation of practical designs and research of their functionalities has allowed to confirm an opportunity of essential increase in power of ultrasonic technological apparatuses.

Increase in efficiency of processes through optimization of ultrasonic vibrating system consisting of half-wave modules of variable cross-section

In this paper the tendencies, which allow creating and applying piezoelectric transducers with enlarged radiation surface in order to increase efficiency of ultrasonic technological devices, are analyzed.

Efficiency increase of multi half-wave radiators

The article presents the results of the studies aimed at the efficiency increase of the piezoelectric vibrating systems with multi half-wave radiators made in the form of the bar with variable diameter. It is determined, that the change of the form of junction between the parts of different diameters of the radiator essentially influences on the efficiency of ultrasonic radiation in liquid media.

Rules and features of the design of piezoelectric sources of high-intensity ultrasonic action

In the article the rules and consequence of the design of separate units (piezoelectric transducers, boosters, concentrators and working tools) at the production of piezoelectric vibrating systems - sources of ultrasonic action on different technological processes are introduced. Proposed rules provide the development of the ultrasonic vibrating systems with necessary parameters of ultrasonic action, such as power, intensity of radiation, frequency, radiating surface, diraction of radiation, etc.

Development of the New Principle of Batching of Energy at Ultrasonic Welding and Creation of the Equipment for Connection of Thermoplastic Materials

In article results of the researches directed on development of a new principle of batching of energy of ultrasonic fluctuations during ultrasonic welding of thermoplastic materials and creation of the specialized ultrasonic equipment in which due to the continuous control of acoustic characteristics of connected materials over electric parameters of piezoelectric oscillatory systems the mode of optimum ultrasonic influence automatically is established are submitted

Measurement of Parameters and Automatic Selection of Optimal Modes During Ultrasonic Welding of Thermoplastic Materials

Article is devoted to research of changes of electric parameters of ultrasonic oscillatory systems (UOS) during ultrasonic welding of thermoplastic materials. In this article the basic problems interfering development of systems of automatic definition of quality of ultrasonic welding are analyzed. The technique performance researches which are directed on improvement of quality of welded connection at ultrasonic welding of thermoplastic materials, is described

The new technology of sliding ski surface covering

This article describes the results of researches and creation of new technology of sliding ski surface covering. The obtained results allowed to confirm the efficiency of offered technology and to recommend them for practical application. As a result of the work the specialized ultrasonic device for sliding ski surface covering was created.

Study of efficiency of ultrasonic treatment in running volumes

The article presents the results of studies allowing us to reveal the operation condition of the ultrasonic apparatuses with multi half-wave radiators in confined space, at which efficiency of ultrasonic influence on the technological process decreases and essential deviation from nominal operation mode is observed.

Determination of the reasons of efficiency decrease in the operation of ultrasonic apparatuses

The article presents the results of studies allowing us to reveal the operation condition of the ultrasonic apparatuses with multi half-wave radiators in confined space, at which efficiency of ultrasonic influence on the technological process decreases and essential deviation from nominal operation mode is observed, that can lead to the failure of the ultrasonic equipment.

Evaluation of the area of intensive coagulation of dispersed-phase particles in emulsion and suspension due to high-intensive ultrasonic treatment

The article is devoted to studying of intensification of stable emulsions and suspensions separation process under the action of ultrasonic treatment.