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Friction and wear behavior of pin-bushing with magnetorheological fluids

Peng Zhang (Inha University, Incheon, Republic of Korea)
Gwanghee Lee (Inha University, Incheon, Republic of Korea)
Chulhee Lee (Department of Mechanical Engineering, Inha University, Incheon, Republic of Korea)
Hyung Yoon (Caterpillar Inc, Mossville, Illinois, USA)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 13 November 2017

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Abstract

Purpose

The purpose of this paper is to carry out research on friction and wear behavior of pin-bushing with magnetorheological fluids (MRFs).

Design/methodology/approach

The oscillation friction characteristics of MRFs with a magnetic field are evaluated by a pin-bushing friction wear tester. The housing is adjusted to apply the magnetic field to MRFs. Experiments are carried out with and without a magnetic field, and the coefficient of friction and temperature on the contact interface are measured. The surfaces of the pin and bushing are also examined by a surface profilometer and an optical microscope before and after tests. The experiment results show a lower coefficient of friction is observed when a magnetic field is applied.

Findings

The temperature is lowest when grease is used. The case when a magnetic field is present shows the higher temperature. The coefficient of friction is higher than grease lubrication when an MRF is applied. The coefficient of friction of the pin-bushing is lowest with grease and highest when a magnetic field is present. The friction coefficient of grease and MRFs decreases as the load increases and remains stable after 3 kN is added. The roughness, surface profile and morphology of the pin show the best results when grease is used as compared with MRFs.

Originality/value

The tribology characteristic of pin-bushing with MRFs shows more deficiency than that with grease. Nevertheless, it is necessary to carry out the research on the friction and wear characteristics of a pin-bushing with MRFs, as it is expected to increase the load-carrying capacity when an MRF is applied to the pin-bush system. Better friction and wear characteristics could be achieved by enhancing the property of MRFs.

Keywords

Acknowledgements

This work was supported by Inha University Research Grant, and the authors gratefully acknowledge the support of Caterpillar in providing the lubricant samples (MRF and grease) for the study.

Citation

Zhang, P., Lee, G., Lee, C. and Yoon, H. (2017), "Friction and wear behavior of pin-bushing with magnetorheological fluids", Industrial Lubrication and Tribology, Vol. 69 No. 6, pp. 912-918. https://doi.org/10.1108/ILT-01-2016-0012

Publisher

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Emerald Publishing Limited

Copyright © 2017, Emerald Publishing Limited

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