Tribological performance of non-asbestos brake friction material in contact with brake disc of varying topography
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 2 July 2020
Issue publication date: 13 November 2020
Abstract
Purpose
The purpose of this paper is to evaluate experimentally the influence of different surface roughness of the contacting disc on tribological performance of the non-asbestos brake friction material (BFM).
Design/methodology/approach
Taguchi method was applied to design an experiment using three different discs of gray cast iron with different surface roughness, which is measured using optical profilometer. These discs were subjected to sliding against pins prepared with the developed non-asbestos BFM, using pin on disc friction and wear monitor.
Findings
The experimental results shows that the disc 2 (Ra = 3.77 µm) gives wear of 22.78 µm and coefficient of friction of 0.462, which is recommended for extreme brake performance. Analysis of Taguchi design revealed that the disc surface was most significant parameter among the parameters under study.
Practical implications
During braking, continuous sliding between the BFM and brake disc or drum not only results into wear of BFM but also changes the surface finish of the brake drum or disc. This leads to variation in surface topography of the drum or disc surface with application of brakes, which further affects the characteristics of the BFM.
Originality/value
The tribological performance of BFM depends upon the topography of the surface on which it was sliding. To get best performance of the non-asbestos friction materials, disc having moderate surface finish is recommended. Scanning electron microscope micrographs had shown the different plateaus formed and energy-dispersive X-ray spectroscopy spectra identified presence of different chemical elements prior to sliding of the pins surface over different discs surface topography.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-04-2020-0120/
Keywords
Acknowledgements
The authors acknowledge the SVKM’s Narsee Monjee Institute of Management Studies (NMIMS) for the financial support to carry the research work presented here, Material Characterization Lab of Advanced Center for Material Science (ACMS) – Indian Institute of Technology Kanpur(IIT-K) for extending their Optical Profiler to carry out the 2D and 3D surface profiles of the discs, Head of Mechanical Engineering Department Sardar Vallabhbhai National Institute of Technology (SVNIT), Surat, for permitting to carry out the experimentation in the Tribology Lab and the Sophisticated Analytical Instrumentation Facility (SAIF) at Indian Institute of Technology – Bombay (IIT-B) for extending SEM and EDS facilities to provide microstructural images. The authors also extend their deep gratitude toward Mr Yogendra Borole from Universal Brakes, Jalgaon, (MS, India) for providing necessary help in manufacturing the brake friction lining materials.
Citation
Shinde, D., Bulsara, M. and Mistry, K.N. (2020), "Tribological performance of non-asbestos brake friction material in contact with brake disc of varying topography", Industrial Lubrication and Tribology, Vol. 72 No. 10, pp. 1277-1283. https://doi.org/10.1108/ILT-04-2020-0120
Publisher
:Emerald Publishing Limited
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