Brake noise has been a problem since the introduction of friction brakes. In motor vehicle applications, the increase of passenger comfort resulting from systematic studies on the transmission, the handling and suspension systems and the acoustics of the passenger compartment has brought the brake noise problem to the fore as a result of the risk of increased warranty costs and reduced product marketability. Due to the friction between the brake rotor and the frictional surfaces (pads), brake noise will occur. This noise is often called brake squeal. In fact, the brake squeal occurs only when the brake system demonstrates resonance vibration. The elimination of this noise is of great of interest for improvement of comfort in vehicles. However, the aim of the present study is to give some insights on the behavior of this phenomena. Different types of frictional surfaces (pads) were used. The test rig has been designed to suit the measurements of the brake vibro-acoustic characteristics at different operating conditions (applied pressure, sliding speed, etc). The results indicate that the pad types and the vibration instability of the brake components are found to be responsible for the squeal energy source.


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    Title :

    Passenger car disc brake squeal


    Contributors:
    Saad, A. (author) / Watany, M. (author) / Abouel-Seoud, S. (author) / Abdel-Gawad, I. (author)


    Publication date :

    1998


    Size :

    12 Seiten, 11 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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