DEPARTMENT 3. Frictional materials science

Department structure:

Sector 3.1 “Vibroacoustics of materials and friction units”
Staff - 11, including D.Sc. - 1, Ph.D. – 4

FUNDAMENTAL INVESTIGATIONS

Frictional materials science, methods of monitoring structure of composite materials and shaping processes of items;
modeling of vibration-absorbing structures of composite materials for tribojoints; investigation of vibroacoustic phenomena at nonstationary conditions of friction;
modeling of heat generation at nonstationary friction, development of numerical methods for determining the temperature fields in the frictional interaction of solids in the oil environment;
Modeling of laminated sound-absorbing structures; development of sound-absorbing materials based on native components.

APPLIED INVESTIGATIONS

eco-friendly heat-resistant friction material for stationary and nonstationary friction;
materials and technologies for recovering volume and surface defects of metal parts, technological equipment and pipelines;
optimization of techniques of noise and vibration absorbing materials used in engineering and construction;
thermal design of brakes and friction units.

DEVELOPMENTS

Materials and manufacturing methods of frictional materials, pads for brake units, clutches and transmissions;
Materials and manufacturing methods of friction discs for multidisc oil-cooled brakes and transmissions of hydromechanical gearboxes, clutches, couplings, power take-off shafts of vehicles;
Friction composites based on fluoroplastics and techniques of their molding into parts for stationary friction joints used in engineering equipment for manufacture of metal cord, chemical fibers and textile;
Sound-absorbing and damping composites based on natural and polymer fibers;
High-strength composites and methods of processing thermosetting plastics into items by forward extrusion;
Formulas of compositions and technology of reconditioning surface and volume defects of metal equipment;
engineering methods of calculating thermal loading of friction pairs

SERVICES

acoustic tests of sound-absorbing and sound-insulation materials (experimental determination of the acoustic characteristics of sound-absorbing media; selection of antinoise materials and structures, their testing on the noise spectrum and characteristics of sound field);
шумоизолирование объектов: подбор шумоизолирующих материалов и конструкций, установка их на объектах с учетом спектра шума и особенностей звукового поля);
vibration tests and diagnostics (determination of the dynamic elasticity modulus and loss factor of sound and vibration absorbing materials by resonant amplitudes, the vibration strength test of products; vibrodiagnostics of parts and machinery by noncontact Laser Doppler Vibrometry);
испытания изделий на вибропрочность;
вибродиагностика деталей, машин и механизмов методом бесконтактной лазерной доплеровской виброметрии);
measurement of noise using sound intensimeter (noise measurement, sound intensity, sound power source level, identification of noise sources, definition of acoustic performance of buildings and rooms).

The department has been accredited for engineering completeness and independence in vibration and acoustic measurements in accordance to ISO/IEC 17025 (Accreditation certificate №BY/112 02.1.0.0963)

FUNDAMENTAL PUBLICATIONS

Balakin V.A., Sergienko V.P. Thermal designes of brakes and friction units. Gomel, MPRI NASB, 1999.
Sergienko V.P., Bukharov S.N. Vibration and noise at nonstationary processes of friction. Minsk, Belarusian science, 2012.
Sergienko V.P., Bukhrov S.N. Nouse and Vibration in Friction Systems. – Cham / Heidelberg / New York / Dordrechr / London, Springer Series in Material Science (electronic resource) 2015. – V.212, 251 p.
Barkanov E., Mihovski M., Sergienko V. Innovative solution in repair of gas and oil pipelines. – Bulgarian society for non-destructive testing publishers, Sofia, 2016.