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 of 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. This paper discusses the limitations of some of the ways the data are typically presented using this method. The paper also discusses 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.
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