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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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Interior <str<strong>on</strong>g>Noise</str<strong>on</strong>g><br />

-Increasing Increasing Roller Speed<br />

70<br />

•Increased noise levels<br />

with increased speed 65<br />

•Fundamental shape <str<strong>on</strong>g>of</str<strong>on</strong>g><br />

spectra intact.<br />

(“oscillating” frequency<br />

resp<strong>on</strong>se)<br />

20 μPa<br />

dB re.<br />

SPL<br />

60<br />

55<br />

50<br />

45<br />

40<br />

35<br />

30<br />

2.9 [km/h]<br />

1.9 [km/h]<br />

1.3 [km/h]<br />

25<br />

100 200 300 400 500 600 700 800<br />

Frequency [Hz]<br />

10<br />

B<str<strong>on</strong>g>Brake</str<strong>on</strong>g> k pressure, 5 [b [bar]<br />

]

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