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| Поле | Співвідношення |
| Title | Tribo-acoustic analysis of the processes of dynamic friction |
| Names |
Dykha, A.
Zaspa, Y. Vychavka, A. |
| Date Issued | 2017 (iso8601) |
| Abstract | The experimental results of the tribo-acoustic control in the integrity of real time of nominally stationary friction joints under conditions of fretting are presented. Violation of the integrity due to the wear of tribofrictions are securely fixed both by the general change in the acoustogram shape of the operating noise, and by the spectrum of noise – the emergence of strong mid-range modes of the contact gap. The emergence of two oppositely directed wave energy cascades in the fretting regimes has been noted: a direct cascade from the mod pumping in the direction of high frequencies and the reverse – toward the low infrasonic frequencies. The first one is related to microplastic deformations in the zones of actual contact, the second one is related to dynamic pointing the slow angular motions in the system of friction. For research, the installation for testing the fretting, which doesn’t contain rotating elements, creating high level of con-tact noise was used. It is shown that the use of a pub-licly available sound recording equipment and standard computer software allows to carry out (for low noise experimental units) contactless acoustic control of the integrity of nominally stationary friction joints under conditions of fretting. Established that low frequency auto-modulation of the friction process, which is mani-fested in the spectrum of the acoustic emission is a consequence of the dynamic targeting slow angular motion in the system of friction. |
| Genre | Стаття |
| Topic | fretting |
| Identifier | Dykha A. Tribo-acoustic analysis of the processes of dynamic friction / A. Dykha, Y. Zaspa, A. Vychavka // MOTROL. Commission of Motorization and Energetics in Agriculture. – 2017. – Vol. 19, No 2. – P. 11–14. |