Identification between rotational fretting and rotational wear of PMMA/steel by means of tribo-noise and tribo-vibration signals

In this paper, the wear behavior of PMMA/steel was investigated by using the tribo-noise and tribo-vibration method under different angular displacement amplitudes. An intermediate zone definition between the boundaries of rotational fretting and rotational wear was proposed by the signals of tribo-vibration and tribo-noise. The relationship between the wear mechanism and the signals of both tribo-noise and tribo-vibration was established. The wear mechanism of rotational fretting and rotational wear has been well explained.

► Rotational fretting and rotational wear behaviors of PMMA against GCr15 steel balls were studied.
► Measurement of tribo-noise and tribo-vibration signals was introduced.
► Difference between rotational fretting and rotational wear was identified.