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Light Weight Systems: The Role of Sound Barriers
Technical Paper
2003-01-1516
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Recent trends in interior noise control, driven in part by mass reduction needs, have led to increased reliance on absorption alone as the control method of choice.
A logical exposition is presented, describing the continuing need for sound barrier systems. The insufficiency of either treatment approach by itself is discussed, and argument is presented for balance and control of both direct and reflected sound.
The issue of sound barrier mass is addressed. Opportunities exist for lighter weight barriers to replace traditional heavy materials. Appropriate mass, as defined by acoustical function, must be the guide for part and system design. Lower mass sound barrier materials can be applied in many cases without adverse effect on vehicle interior acoustical environment.
It is the role of the acoustical development engineer to understand the distinction between absorber and barrier, direct and reflected sound, and to select materials for a balanced, mass effective solution.
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Citation
Semrau, W., "Light Weight Systems: The Role of Sound Barriers," SAE Technical Paper 2003-01-1516, 2003, https://doi.org/10.4271/2003-01-1516.Also In
References
- Private communication with OEM NVH Engineer
- VanBuskirk, Jeff “A Lightweight Alternative to Automotive Sound Control” Automotive & Transportation Interiors Expo Conference 1998
- Wentzel, R.E. VanBuskirk, J. “A Dissipative Approach to Vehicle Sound Abatement” SAE Paper 1999-01-1668 1999
- Harris, C.M. “Handbook of Noise Control” McGraw-Hill 1957
- Industrial Noise Control Manual, Revised Edition 1978 National Institute for Occupational Safety and Health Cincinnati, Ohio
- SAE Recommended Practice J1400
- Hirabayashi, T. et al “Application of Noise Control and Heat Insulation Materials and Devices in the Automotive Industry” SAE Paper 951375 1995
- Wyerman, B. et al “Automotive Noise and Vibration Control Practices in the New Millennium” SAE Paper 2003-01-1590 2003