Abstract
The vibration damping performance of materials that are used in the automotive industry are usually tested by either (1) the Geiger plate test method or (2) the complex modulus test method. The first test method has some advantages for testing materials that are unique to the automotive industry. Both of these methods have certain limitations, though the second method is a superior one in the sense that it can measure the damping performance with temperature and frequency. The limitations of some of the ways the data are typically presented using this method as well as how design charts can be used to overcome these limitations and compute the damping performance of the composite material (composite loss factor) for a given application are discussed.
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