Experimental Research Into Generation of Acoustic Emission Signals in the Process of Friction of Hadfield Steel Single Crystals

7th International Scientific Practical Conference "Innovative Technologies in Engineering"

Lychagin, D.V.^1,2 ; Filippov, A.V.^2,3 ; Novitskaia, O.S.^3 ; Kolubaev, E.A.^2,3 ; Sizova, O.V.^3

National Research Tomsk State University, Lenin av. 36, Tomsk, Russia^1

National Research Tomsk Polytechnic University, Lenin av. 30, Tomsk, Russia^2

Institute of Strenght Physics and Materials Sciences SB RAS, per. Academicheskii 2/4, Tomsk, Russia^3

关键词: Acoustic emission signal;    Amplitude frequency characteristics;    Dry sliding friction;    Experimental research;    Friction factors;    Friction regime;    Friction surfaces;    Short time Fourier transforms;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/142/1/012098/pdf
DOI  :  10.1088/1757-899X/142/1/012098

来源: IOP

【 摘 要 】

The results of experimental research into dry sliding friction of Hadfield steel single crystals involving registration of acoustic emission are presented in the paper. The images of friction surfaces of Hadfield steel single crystals and wear grooves of the counterbody surface made after completion of three serial experiments conducted under similar conditions and friction regimes are given. The relation of the acoustic emission waveform envelope to the changing friction factor is revealed. Amplitude-frequency characteristics of acoustic emission signal frames are determined on the base of Fast Fourier Transform and Short Time Fourier Transform during the run-in stage of tribounits and in the process of stable friction.