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Acoustical Drain Plugs in Body Cavity Sealer “Baffles”
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English
Abstract
Heat reactive expanding sealer materials are used as acoustical “baffles” to block noise propagation in rails, pillars, posts, and rockers. However, should moisture enter and collect in vertical pillars water damage may occur. Therefore, effort is being made to implement a drainage system for these problem applications. This paper discusses an effective way to prevent water damage by adding an acoustical drain plug to the baffle system with a minimal reduction in acoustical performance. The paper also discusses the performance and the effect of adding this plug to the baffle system. Finally, results of design variations of the plug on the baffle system are reported.
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Citation
Saha, P. and Jones, D., "Acoustical Drain Plugs in Body Cavity Sealer “Baffles”," SAE Technical Paper 971908, 1997, https://doi.org/10.4271/971908.Also In
References
- Groening, J.A. “Automotive Acoustical Insulation: Old and New” Society of Automotive Engineers Automotive Materials Application for Automotive Interiors TOPTEC June 1996
- Apps, D.C. “Automobile Noise” Handbook of Noise Control Harris Cyril M. McGraw-Hill Book Company 1957
- Saha, P. Myers, R.D. “Evaluating Acoustical Performance of Expandable Sealant Materials” SAE Technical Paper No. 930336 International Congress & Exposition Detroit, Michigan March 1-5 1993
- Saha, P. “Proper Standards for Evaluating the Acoustics of Automotive Materials” Automotive & Transportation Interiors Expo Conference Detroit, Michigan May 8 1996
- SAE Recommended Practice J1400 “Laboratory Measurement of the Airborne Sound Barrier Performance of Automotive Materials and Assemblies” 1990