This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
The Impact of Fiber Filling Density Variation on the Acoustic Performance of Silencers
Technical Paper
2005-01-2367
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Fibrous materials are often used to fill chambers in automotive silencers to achieve acoustic attenuation of air borne noise (especially above 200 Hz) in exhaust systems. It is clear that one of the major determinants of the acoustic performance of an absorptive silencer is the amount of fibrous material in the silencer [1]. However, there is little published data as to the impact upon acoustic performance of fiber packing density variations [2] within a silencer chamber In this study, cylindrical silencers with a straight through perforated tube have been used to experimentally study the impact of large density variations and voids, in both the radial and axial directions, upon the acoustic performance of a silencer. The acoustic transmission loss in a no-flow apparatus was the test measurement employed to determine acoustic performance.
Recommended Content
Authors
Citation
Huff, N., "The Impact of Fiber Filling Density Variation on the Acoustic Performance of Silencers," SAE Technical Paper 2005-01-2367, 2005, https://doi.org/10.4271/2005-01-2367.Also In
SAE 2005 Transactions Journal of Passenger Cars: Mechanical Systems
Number: V114-6; Published: 2006-02-01
Number: V114-6; Published: 2006-02-01
References
- Selamet A. Xu M. B. Lee I-J. Huff N. T. Journ. Acoust. Soc. Of Am. Analytical Approach for Sound Attenuation in Perforated Dissipative Silencers
- Selamet A. Xu M. B. Lee I.-J. Huff N. T. Int. J. Vehicle Noise and Vibration Dissipative Expansion Chamber With Two Concentric Layers of Fibrous Materials.
- Selamet A. Dickey N. S. Novak J. M. 1994 Journ. Acoust. Soc. of Am. 96 3177 3185 The Herschel-Quincke tube: A theoretical, computational, and experimental investigation.