Experimental Study of Wire Brush Brake Noise on a Personal Car
Experimental Study of Wire Brush Brake Noise on a Personal Car
Experimental Study of Wire Brush Brake Noise on a Personal Car
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<str<strong>on</strong>g>Brake</str<strong>on</strong>g> Pad Vibrati<strong>on</strong>s<br />
-Increasing Increasing Roller Speed<br />
•Increased vibrati<strong>on</strong> levels<br />
with increased roller speed<br />
•Fundamental shape <str<strong>on</strong>g>of</str<strong>on</strong>g><br />
spectra NOT intact<br />
•“Flatter” Flatter frequency<br />
resp<strong>on</strong>se<br />
•Peaks intact with<br />
iincreasing i roller ll speedd<br />
s 2<br />
1 μm/s<br />
dB re.<br />
Level<br />
90<br />
88<br />
86<br />
84<br />
82<br />
80<br />
78<br />
76<br />
74<br />
72<br />
NB! <str<strong>on</strong>g>Brake</str<strong>on</strong>g> force 70<br />
unchanged (if<br />
2.9 [km/h]<br />
1.9 [km/h]<br />
1.3 [km/h]<br />
68<br />
100 200 300 400 500 600 700 800<br />
Coulomb fricti<strong>on</strong>)<br />
12<br />
Frequency [Hz]<br />
B<str<strong>on</strong>g>Brake</str<strong>on</strong>g> k pressure, 5 [b [bar]<br />
]
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