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Appl. Sci. 2016, 6(10), 289; doi:10.3390/app6100289

Wear Characteristics of Metallic Counterparts under Elliptical-Locus Ultrasonic Vibration

School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
Author to whom correspondence should be addressed.
Academic Editors: Stefano Invernizzi and Chien-Hung Liu
Received: 13 July 2016 / Revised: 26 September 2016 / Accepted: 28 September 2016 / Published: 11 October 2016
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Wear behavior is influential to improve friction drive and wear lifespan of actuators or motors, which work at an elliptical locus vibration. Sliding wear tests of metallic friction pairs are conducted by a laboratory rig of ultrasonic vibration. Surfaces of the different metallic sliders are characterized using surface roughness, Abbott curves and fractal dimension. Results show that surface roughness is reduced to varying degrees in the metallic sliders due to ultrasonic polishing and/or micro-rolling effect. Variations in the fractal dimensions of contact surfaces are consistent with that of surface roughness. Wear traces demonstrate that plastic deformation and cracking are the primary failure modes. Where the driving tip on the slider is in intermittent contact followed by impact effects, ripples of 3~5 μm traces suggest the occurrence of fretting in duralumin sliders. Nodular cast iron showed a favorable performance during running of ultrasonic motor, exhibiting a stable output performance and durable wear life. View Full-Text
Keywords: metal; wear; surface roughness; fractal dimension; confocal laser-scanning microscope metal; wear; surface roughness; fractal dimension; confocal laser-scanning microscope

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Zhang, Y.; Qu, J.; Wang, H. Wear Characteristics of Metallic Counterparts under Elliptical-Locus Ultrasonic Vibration. Appl. Sci. 2016, 6, 289.

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