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Performance of Non Asbestos Disc Brake Friction Material for Automotive Application - An Experimental Case Study
Technical Paper
2010-01-1678
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Friction stability and wear resistance are key factors in brake
system design and performance. The paper deals with the
experimental investigation of friction characteristics and wear of
three commercially available NAO (non-asbestos organic) disc brake
friction materials viz. Grade A, Grade B and Grade C for a sport
utility vehicle. The composites were evaluated for various friction
performance properties such as average coefficient of friction,
performance at various speeds (8.34 m/s to 38.89 m/s) and pressures
(2 MPa to 12 MPa), fade & recovery behavior. These friction and
wear characteristics were determined using four wheeler inertia
dynamometer. The physical properties such as density, hardness,
heat swell, water swell, adhesive bond strength at room temperature
and adhesive bond strength at 400°C were studied according to
Indian Standards. In addition SEM-EDX (Scanning electron microscope
with energy dispersive X-ray) analysis was carried out for finding
ingredients and micro structural characterization of brake friction
material. Finally the results are discussed and correlated to the
observed friction phenomenon. The coefficient of friction was found
to be highest for Grade B and lowest for Grade A and wear of Grade
A was lower than that of grades B and C. It was observed that the
coefficient of friction increases with increase in speed from 8.34
m/s to 22.23 m/s and then it continuously decreases for speed up to
38.89 m/s. The maximum coefficient of friction was observed at a
speed of 22.23 m/s for all the grades viz. A, B and C.
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Citation
Kosbe, P., Sahasrabudhe, N., Khandagale, R., and Kulkarni, R., "Performance of Non Asbestos Disc Brake Friction Material for Automotive Application - An Experimental Case Study," SAE Technical Paper 2010-01-1678, 2010, https://doi.org/10.4271/2010-01-1678.Also In
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