ultrasonic machining (usm) is a mechanical material removal process used to erode holes and cavities in hard or brittle work pieces by using shaped tools, high-frequency and an abrasive slurry. this paper addresses the concept and development of an expert system (es) for hard and brittle material, such as glass, quartz, diamond, carbides, semi conducting materials, ceramic and graphite which ca...

Assassin bugs (Stenolemus bituberus) hunt web-building spiders by invading the web and plucking the silk to generate vibrations that lure the resident spider into striking range. To test whether vibrations generated by bugs aggressively mimic the vibrations generated by insect prey, we compared the responses of spiders to bugs with how they responded to prey, courting male spiders and leaves fa...

The article is devoted to an experimental research of the effectiveness continuous contact ultrasonic drying dense woolen fabrics. For drying, stand was created in form a small-sized continuous-action machine. In process, dried fabric rewound from reel reel, through zone (150 W) and thermal (at temperatures 50 °C 80 °C) exposure. It has been established that action (together with thermal) provi...

The article is devoted to measures improving the energy efficiency of technological process applying wear-resistant multifunctional composite protective coatings by method electroacoustic spraying. proposed technique for increasing based on use methods optimal planning an experiment using non-orthogonal matrices and obtained interpolation-regression equations output main parameters quality proc...

The structure and martensitic transformations in NiTi foams produced by self-propagating high-temperature synthesis under the action of ultrasonic vibrations (USV) at different pre-heating temperatures powder mixture are studied. It has been found that with an increase temperature, porous changes from layered to isotropic one foams, but cavities appear. USV treatment reduces number increases ma...

The task of measuring rotating shafts angular deformation by means ultrasonic vibration meter is considered in the article. Measurement parameters objects an urgent technical diagnostics electromechanical units, turbines, drilling rigs and metal-cutting machines subject to disturbances. measured include their torques arising from torsional vibrations shafting stationary mobile objects. Timely m...