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Natural Fiber Based Lightweight Sound Absorber Materials
Technical Paper
2007-01-2197
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A variety of synthetic and natural fibers are commonly used in the construction of sound absorbers for automotive applications. Sound absorbers incorporating these fibers are produced by a variety of manufacturing processes. These manufacturing processes generally utilize synthetic or natural fibers that have a starting length of 25mm or greater. The final sound absorber may also incorporate very long yarns, filaments or pieces of partially opened textiles referred to as shoddy. Largely absent from commercial automotive sound absorbers are high levels of short natural fibers, whose length is generally less than 3mm. The focus of this work was to evaluate the sound absorption performance of materials comprised primarily of short natural fibers. The data showed that sound absorbers utilizing a majority of short natural fibers could provide equivalent sound absorption at a lower weight than traditional structures using longer fibers.
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Authors
Citation
Hurley, J., "Natural Fiber Based Lightweight Sound Absorber Materials," SAE Technical Paper 2007-01-2197, 2007, https://doi.org/10.4271/2007-01-2197.Also In
References
- Veen, J. Material Construction, Manufacturing Processes and Acoustic Performance Characteristics of Fibrous Absorber Materials Used in the Automotive Industry 2005 SAE Noise and Vibration Conference Proceedings SAE International 2005
- Hirabayashi, T. et. al. Application of Noise Control and Heat Insulation Material and Devices in the Automotive Industry 2005 SAE Noise and Vibration Conference Proceedings SAE International 2005