Holographic analysis of vibrations on squealing drum brake systems is a useful method to localize vibration sources on drum brake components. The results described in this paper are obtained by ...

The combination of vibrational analysis, empirical testing, and consistent test methodology led to the understanding and elimination of low frequency drum brake noise. Each of the above items served ...

Typical, medium-duty, hydraulic brake system with front discs (red circuit) and rear drums (green circuit). Boost, or assist (blue circuit), is provided by an engine-driven pump, although the power ...