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Application of a Constrained Layer Damping Treatment to a Cast Aluminum V6 Engine Front Cover
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 16, 2005 by SAE International in United States
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Constrained Layer Damping (CLD) treatments have long provided a means to effectively impart damping to a structure [1, 2 and 3]. Traditionally, CLD treatments are constructed of a very thin polymer layer constrained by a thicker metal layer. Because the adhesion of a thin polymer layer is very sensitive to surface finish, surfaces that a CLD treatment can be effectively applied to have historically been limited to those that are very flat and smooth. New developments in material technology have provided thicker materials that are very effective and less expensive to apply when used as the damping layer in a CLD treatment. This paper documents the effectiveness of such a treatment on a cast aluminum front cover for a V6 engine. Physical construction of the treatment, material properties and design criteria will be discussed. Candidate applications, the assembly process, methods for secondary mechanical fastening will be presented. Noise and vibration data from both bench testing and engine dynamometer testing will also be presented.
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CitationOosting, N., Hennessy, J., Hanner, D., and Fang, D., "Application of a Constrained Layer Damping Treatment to a Cast Aluminum V6 Engine Front Cover," SAE Technical Paper 2005-01-2286, 2005, https://doi.org/10.4271/2005-01-2286.
- Beranek Leo L. “Noise and Vibration Control” 1988
- Baxa Donald E. “Noise Control in Internal Combustion Engines” 1982 John Wiley & Sons
- Nashif Ahid D. Jones David I.G. John P.