Experimental Study on Corrugation of a Sliding Surface Caused by Frictional Self-Excited Vibration

• Published in: Tribology transactions Vol. 59; no. 1; pp. 8 - 16
• Main Authors: Hu, W. P., Wang, P., Chen, G. X., Hu, Y., Cui, X. L., Peng, J. F., Zhu, M. H.
• Format: Journal Article
• Language: English
• Published: Philadelphia Taylor & Francis 02-01-2016; Taylor & Francis Inc
• Subjects: Accelerometers; Corrugating; Corrugation; Evolution; frictional self-excited vibration; Lasers; rail corrugation; Scars; Sensors; Sliding; Sliding friction; squealing vibration; Tribology; Vibration; Vibration analysis; Wear
• ISSN: 1040-2004; 1547-397X
• DOI: 10.1080/10402004.2015.1041628

A series of tests is conducted on a pin-on-disc tester to study the effect of frictional self-excited vibration on evolution of the scar profiles. A laser displacement sensor is used to measure the profile size of the worn scars. An accelerometer is used to measure vibration of the pin specimen. The test results show that a sustained frictional self-excited vibration easily occurs under dry friction. When the vibration lasts for a long enough time, corrugation is generated on the sliding surface of the disc specimen. The wavelength of corrugation is approximately equal to the sliding speed multiplied by the period time of the friction-induced vibration.