Experimental Study of Wire Brush Brake Noise on a Personal Car

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Limiting Factors <strong>of</strong> Test Rig h<strong>Noise</strong> Masking hTire-roller Tire roller noise hRoller noise hElectrical Electrical engine hRoller mechanics hBackground Background noise 6
Interior <strong>Noise</strong> -Increasing Increasing <strong>Brake</strong> Pressure 65 •Increasing noise levels with brake pressure 60 •Broadband 20 μPa 55 •Low frequency 50 Spectra will be referred to as ether “flat” or “oscillating” in frequency, (fig in slide “oscillating”) dB re. SPL 45 40 35 30 25 5.0 [bar] 3.3 [bar] 1.8 [bar] 00.0 0 [bar] 100 200 300 400 500 600 700 800 7 Frequency [Hz] Roller speed, 1.3 [km/h]
Page 1 and 2: Experimental <stro
Page 3 and 4: Scope of Work 1. P
Page 5: Description of Tes
Page 9 and 10: Interior Noise -In
Page 11 and 12: Brake Pad Vibratio
Page 13 and 14: Conclusion h Noise
Page 15 and 16: Questions Acknowledgment The work h

Experimental Study of Wire Brush Brake Noise on a Personal Car

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