Humidity and Water Effect on Wear Characteristics of Disc Braking System

Abstract:

A series of wet braking tests has been performed using two different pad materials. Brake tests were conducted in different operating conditions i.e. dry, humid air and wet environment in which both pad samples were tested against grey cast iron disc at certain sliding speed and contact pressure. Wear analysis was performed to find correlation between presence of water and changes in brake pad wear characteristics. The results revealed that regardless of the frictional behaviour, wear rate for both pad materials tested at humid air and wet braking is significantly lower than in dry results.

• Periodical: Applied Mechanics and Materials (Volume 819)
• Pages: 612-617
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.819.612
• Online since: January 2016
• Authors: Muhammad Faiz Fadzli Abdul Mokti, Mohd Kameil Abdul Hamid*, Abdul Rahim Abu Bakar
• Keywords: Humidity, Surface Topography, Water Tribofilm, Wear Debris

References

[1] P.J. Blau and J.C. McLaughlin, Effects of water films and sliding speed on the frictional behavior of truck disc brake materials, Tribology International, 36 (2003) 709–715.

DOI: 10.1016/s0301-679x(03)00026-4

[2] N.S.M. El-Tayeb, and K.W. Liew, Effect of water spray on friction and wear behaviour of non-commercial and commercial brake pad materials. Journal of Materials Processing Technology. 208 (1–3) (2008) 135-144.

DOI: 10.1016/j.jmatprotec.2007.12.111

[3] N.S.M. El-Tayeb, and K.W. Liew, On the dry and wet sliding performance of potentially new frictional brake pad materials for automotive industry. Wear. 266 (1–2) (2009) 275-287.

DOI: 10.1016/j.wear.2008.07.003

[4] M., Eriksson, and S., Jacobson, Tribological surfaces of organic brake pads. Tribology International, 33(12) (2000) 817-827.

DOI: 10.1016/s0301-679x(00)00127-4

[5] S.W., Kim, et al., A comprehensive study of humidity effects on friction, pad wear, disc wear, DTV, brake noise and physical properties of pads, SAE International. (2011).

DOI: 10.4271/2011-01-2371

[6] M. Eriksson, J. Lord, and S. Jacobson, Wear and contact conditions of brake pads: dynamical in situ studies of pad on glass. Wear, 249(3–4) (2001) 272-278.

DOI: 10.1016/s0043-1648(01)00573-7

[7] M.H. Cho, S.J. Kim, R.H. Basch, J.W. Fash, H. Jang, Tribological study of gray cast iron with automotive brake linings: The effect of rotor microstructure . Tribology International, 36 (7) (2003) 537-545.

DOI: 10.1016/s0301-679x(02)00260-8