EXPERIMENTAL SUPPORT OF INFORMATIVE FREQUENCIES OF ACOUSTIC EMISIS TRIBOSYSTEMS WITH CHANGE DESIGN, TECHNOLOGICAL AND OPERATING FACTORS

Authors

  • Віктор Анатолійович Войтов
  • Катерина Андріївна Фененко
  • АндрійГригорович Кравцов

DOI:

https://doi.org/10.18372/0370-2197.3(92).15927

Abstract

In the presented work experimental dependences which confirmed adequacy of the developed mathematical models of formation of acoustic radiation (AE) from a zone of friction of tribosystems taking into account design, technological and operational factors are received. According to the results of research, a rating of factors influencing the formation of the values of the informative frequencies of AE and the limits of the range of their radiation.

In the first place, according to the degree of impact, there are operational factors - sliding speed and load. The values of the coefficient of variation when changing these factors have the maximum value and are equal to 69,0%. Information frequencies are in the band 110-600 kHz. In second place, according to the degree of influence, is a constructive factor - the size of the area of friction. The value of the coefficient of variation when this factor changes is equal to 65,7%. Information frequencies are in the band 120-580 kHz. In third place, according to the degree of influence, are technological factors - the roughness of the friction surfaces, Ra and Sm. The value of the coefficient of variation when Ra changes is equal to 62,5%, when changing Sm – 50,0%. Information frequencies are in the band 120-650 kHz. In fourth place, according to the degree of impact, are the materials of triboelements and tribological properties of lubricants, which are related to design factors. The value of the coefficient of variation when changing the bonded materials in the tribosystem is 33,3%, when changing the tribological properties of the lubricant – 15,8%. Information frequencies are in the band 210-420 kHz.

Analysis of the obtained dependences confirms the theoretical conclusion that the choice of informative frequencies of acoustic emission signals taking into account design, technological and operational factors will increase the robustness and informativeness of the AE method in the diagnostic process. This analysis can be the basis for the development of methods for diagnosing tribosystems during their operation.

Author Biographies

Віктор Анатолійович Войтов

д.т.н., проф., завідувач кафедри транспортних те-хнологій і логістики,Державний біотехнологічний університет

Катерина Андріївна Фененко

аспірантка кафедри транспортних технологій і логістики,Державний біотехнологічний університет

АндрійГригорович Кравцов

к.т.н., доц., доцент кафедри транспортних техно-логій і логістики, Державний біотехнологічний університет

Published

2021-09-27

Issue

Section

Проблеми тертя та зношування