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This article is devoted to the development and investigation of ultrasonic equipment used for reduction of friction coefficient during the moving of free-flowing and hard filling compounds through tubular members.
In this article the methods of defect elimination in existing equipment for ultrasonic laparoscopy are offered and the results of this equipment investigation are presented.
The device for ultrasonic drying having improved technical specifications obtained due to drying chamber of special form is described in the article. The results of experiments showed that ultrasonic drier has maximum efficiency during the drying of capillary-porous materials. It was found out that the maximum efficiency can be achieved with ultrasonic exposure together with supply of heated (no more...
The article is devoted to the problems which can occur during the ultrasonic processing of liquid media with high damping of ultrasonic vibrations. The disadvantages of existing equipment are shown. The new ways of ultrasonic cavitational processing of viscous media are offered; they let to realize new technological processes, which are impossible in ordinary conditions without ultrasonic influence.
Ultrasonic welding is the most perspective method of obtaining of qualitative welded connection of thermoplastic polymer materials. In the article the results of investigations on the development of specialized ultrasonic vibrating systems for ultrasonic circular welding are presented. The designed ultrasonic vibrating systems are recommended to apply for ultrasonic welding of the goods made of thermo-plastic...
Results of researches of influence of acoustical contacts between exchangeable operating tool and electro-acoustical transducer on mechanical and electrical characteristics of oscillatory system are presented in this article. Measured amplitude-frequency and phase-frequency dependence of oscillatory system with various types of operating tools are shown. Analyze of measured dependences is made. Searching...
In article are suggest multifrequency ultrasonic transducer with stepped-plate disk. This device is mean for coagulation aerosols with 0.4 mum particle size. Also present method of engineering calculation stepped-plate radiator.
The article is devoted to the development of ultrasonic device for destruction of subcutaneous fat as an aid during weight-reducing treatment. Developed equipment meets necessary technical requirements and now is at the stage of clinical trials.
In the conditions of economic crisis the most actual technologies are technologies used local materials or waste as a fuel. The technological equipment for pressing of fuel briquettes from fibrous materials (straw with flammable powder) was developed. It allowed to transfer mechanical vibrations of high-intensity ultrasonic frequency on the press-form and provided the quality improvement of produced...
In the article construction of ultrasonic coagulation camera designed on the base of disk piezoelectric irradiator is described. The experimental results are also given, which prove its effectiveness. The developed construction of the camera insures not only aerosol coagulation but also further its settling.
In the article the laboratory measuring equipment for investigation of mixing in the ultrasonic mass-transfer apparatus is described. The experimental results of testing the equipment during dissolving of crystalline substance in liquid medium with the help of high-intensity ultrasonic vibrations are considered.
This article is devoted to comparative researches of half-wave ultrasonic piezoelectric transducers which are made on various constructive schemas. Measuring results of amplitude-frequency and phase-frequency characteristics with operating tools of one-wave and half-wave length are used for their comparison. All operating tools are used in the ultrasonic therapeutic devices.
In this paper the tendencies, which let to create and apply piezoelectric transducers with enlarged radiation surface in order to increase the efficiency of ultrasonic technological devices, are analyzed. The article demonstrates some practical examples of using of designed systems including the device for wastewater treatment.
It is shown theoretically and experimentally that an important investment into the intensification of mass exchange processes in capillary porous system filled with liquid, for example, diffusion and filtration processes, introduce the extraction caused by LtreverseGt ultrasound capillary effect, which arises in the low frequency ultrasonic field. The rules obtained in changing the kinetics of mass...
In the article parameters of ultrasonic welding influencing quality of welded connection are analyzed. Results of researches on definition of welded connections strength of thermoplastic polymeric materials obtained by ultrasonic welding are presented.
In the article describes the device for ultrasonic drying possessing enhanced specification received due to application drying chamber of the special form.
The article is devoted to problems of the matching of ultrasonic vibratory systems with electronic generators, for automatic maintenance of an optimum behaviour of energy transfer from the electronic generator to an ultrasonic vibratory system.
The information on possibilities and specificities of usage of a noncontact stroboscopic measuring method of amplitude is presented in the article. Results of the stroboscopic method comparison with measuring by means of a hour-type displacement measurer are presented. The carried out analysis allows determining advantages and disadvantages of examined measuring methods.
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