The Variation of Friction Vibration under Different Loads During the Running-in Process

Abstract

Running-in wear experiments were conducted on a spherical-on-disk tester to study the variation of friction vibration under different loads. Variations of friction vibration under each loads were analyzed by time-frequency features. Experimental results show that the amplitude of friction vibration signals gets larger with the increase of load at each moment, which shows the same trend with the friction coefficient and the worn surface roughness. Therefore, the friction vibration can reflect the variation of wear states under different loads in the running-in process.