Demin V.M., Majbuk Z.Yu.Ya., Los' V.F., Lementueva R.A. «Apparatus and technique for prolonged measurements of electromagnetic radiation and acoustic emission» Приборы и техника эксперимента, 38, № 4, с. 149-154 (1995)

The apparatus permits to measure the electromagnetic (EMR) and acoustic (AR) radiations during uninterrupted prolonged measurements when simulating the processes of fractures for rock samples. It ensures the EMR and AR energy spectra determination and their combined processing in such main parameters as signal energy and number of signal, mean signal energy and energy release. The apparatus allows to obtain a new prognostic parameter of rock fracture, determined as the ratio of total energies of EMR and AR.

Andriyanov Yu.V., Andriyanova O.N., Bagaudinov K.G., Garilevich B.A., Maksimov D.V. «Three-beam generator of acoustic shock-wave pulses» Приборы и техника эксперимента, 40, № 2, с. 123-125 (1997)

A three-beam generator of shock-wave acoustic pulses is described. The generator consists of three plane radiators of electromagnetic type with acoustic focusing lenses. The radiators are located on a general base symmetrically relative to the generator axis and so, thus the axes of acoustic lenses intersect in one point being the geometric focus for each lens. Measurement results of the pressure amplitude distribution of a shock-wave acoustic pulse in the zone of three beams intersection are presented. It is shown that the pressure distribution has plateau-like form. The generator is intended for crushing the kidney and bile gall-stones.

Erofeev Vladimir I., Antonov Artem M., Malkhanov Alexey O. «On the velocities of Rayleigh surface waves propagating along boundaries of generalized continua» Журнал Сибирского Федерального университета. Математика и физика, 18, № 2, с. 191-198 (2025)

Показано, что математические модели градиентно-упругой среды и редуцированной среды Коссера, в отличие от модели классического деформируемого твердого тела, позволяют описать наблюдаемую экспериментально дисперсию поверхностной волны Рэлея, т.е. зависимость фазовой скорости от поверхностной волны частоты. При этом, согласно модели градиентно-упругого полупространства, скорость поверхностной волны не может превосходить скорости сдвиговой волны, но при определенных значениях частоты может ее достигать. Согласно же редуцированной модели Коссера скорость поверхностной волны превышает скорость сдвиговой волны, а также скорость распространения поверхностной волны в классическом полупространстве и градиентно-упругом полупространстве. Ключевые слова: градиентно-упругое полупространство, редуцированная модель Коссера, поверхностная волна, дисперсия, фазовая скорость, частота.

Dobershtejn S.A., Malyukhov V.A., Nikolaenko K.V. «High-selective self-matching filters based on surface acoustic waves with low losses for short and ultra-short wave range» Приборы и техника эксперимента, 34, № 2, с. 231-232 (1991)

The developed filters based on acoustic waves was designed for operating in radioreceiver input circuits in the range of short and ultra-short waves, in portable and moving receivers-transmitters, frequency synthesizers, intermediate frequency tracts of domestic receivers. The specific feature of filters was the receiving of active input impedances in transmission band without using matching LC-components. It was reached by selection for piezoelectric prescribed section of certain number of electrode couples in input and output converters.

Mednikov A.M., Abrosimov I.N., Saatov E.A., Petukhov M.V. «Acoustooptical modulator of light polarization» Приборы и техника эксперимента, 34, № 2, с. 0 (1991)

The modulator was described applied to polarization measurements. The modulator was made of melted quartz resonating at the frequencies from 55 up to 60 kHz, the resonance quality factor was of 10³–10⁴. The oscillations were excited by piezoceramic components master oscillator supplied. The modulation amplitude was controlled by analogous signal or digital code. The light beam diameter did not exceed 10 mm.

D'yachko A.N., Melikhov S.V., Titov A.A. «Broadband power amplifier for acoustic-optical systems» Приборы и техника эксперимента, 34, № 2, с. 111-112 (1991)

The circuit for the amplifier with output power exceeding the power delivered to separate transistors was described. It was possible due to the application of superbroadband adder. The specifications of the amplifier were the following ones: working frequency range 150 kHz–230 MHz; amplification factor 45 DB; output power 25 W; power demand 250 W. To provide the optimum load impedance of channel amplifier output transistors the transformers with transformation factor 1:4 were connected between channel amplifiers outputs and adder.

Ivanov V.V., Labutin S.A., Mel'nikov V.I. «Computer acoustic diagnostic system for two-phase flows» Приборы и техника эксперимента, 36, № 1, с. 238-239 (1993)

The authors describe a system determining the local and volume steam content, the velocity of the motion and the size of steam or gas bubbles in a liquid flow. The complex includes four acoustic converters, a measuring part connected with a computer and made in the form of a plate located inside the computer and a package of applied programmes. The measurement of the parameters of two-phase flows is based on the measurement of a signal passing from a radiator of an acoustic pulse to an acoustic receiver. The main technical characteristics are given.

Bezotvetnykh V.V., Kamenev S.I., Kuz'min E.V., Morgunov Yu.N., Nuzhdenko A.V. «An acoustic transceiver for monitoring dynamic processes in the ocean» Приборы и техника эксперимента, № 6, с. 129-133 (2023)

An acoustic transceiver for the monitoring of dynamic processes in the ocean by acoustic tomography methods is described, and the results of its tests are presented. At an acoustic pressure of 2–6 kPa/m produced by the transceiver in the emission mode at frequencies of ≈250 Hz and an rms error in determining time intervals no larger than 2 ms, the flow velocity component can be measured to an accuracy of 10 cm/s by using the countersounding scheme.

Bezotvetnykh V.V., Kamenev S.I., Kuz'min E.V., Morgunov Yu.N., Nuzhdenko A.V. «An acoustic transceiver for monitoring dynamic processes in the ocean» Приборы и техника эксперимента, 45, № 1, с. 129-133 (2002)

An acoustic transceiver for the monitoring of dynamic processes in the ocean by acoustic tomography methods is described, and the results of its tests are presented. At an acoustic pressure of 2–6 kPa/m produced by the transceiver in the emission mode at frequencies of ≈250 Hz and an rms error in determining time intervals no larger than 2 ms, the flow velocity component can be measured to an accuracy of 10 cm/s by using the countersounding scheme.