External hard particle size effect on changes in frictional performance and grit embedment during drag and stop mode braking
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The effects of silica sand of 50-180 µm, 180-355 µm and 355-500 µm on friction performance and grit embedment at brake disc and pad interface was investigated. Results showed that present of external hard particles caused higher friction coefficient due to higher number of smaller particles involved in mixing and changing the effective contact, while good friction stability was attributed to smaller grit particles and compacted wear debris. Grit embedment was greatly dependent on presence of compacted wear debris as most grits were embedded into compacted wear debris with embedment of 0.8% was observed for 50-180 µm, 2% for 180-355 µm and 3% for 355-500 µm.
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Effects of hard particles on friction coefficients and particle embedment in brake system during hard brakingAbdul Hamid, M.; Stachowiak, Gwidon; Syahrullail, S. (2012)The effects of hard particles on the friction coefficients and particle embedment during hard braking were investigated. Silica sands grit of the size between 180 to 355 µm were used during the experiments. The results ...
The effect of external grit particle size on friction coefficients and grit embedment of brake friction materialHamid, M.; Stachowiak, Gwidon; Syahrullail, S. (2013)Changes in friction and contact surfaces characteristics of a brake friction material during drag and stop mode test were investigated using a brake model tribo-tester. Scanning Electron Microscopy (SEM) was utilized to ...
Abdul Hamid, M.K.; Stachowiak, Gwidon (2012)The effects of external hard particles on the friction coefficients and its oscillation amplitudes during hard braking were investigated. Silica sands of the size between 180 to 355 µm were used during the experiments. ...