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A Lightweight Multilayer Dissipative Material with High Acoustic Performance
Technical Paper
2023-01-1083
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A multilayer acoustic treatment constructed of fibrous acoustic absorption material combined with dissipative acoustic material achieves a low profile and is lightweight and multi-functional, with properties that are desirable for NVH (noise, vibration, and harshness) treatments. The dissipative material consists of microfibers and acoustically active particles; this material was introduced in the last SAE NVH conference: A Novel Dissipative Acoustic Material [1].
In this paper, the acoustic performance of the multilayer treatment was evaluated by using random incidence absorption and transmission loss measurements, as well as in-vehicle experiments. Absorption and transmission loss were additionally modeled using the transmission matrix method (TMM). In the in-vehicle test, an OEM wheelhouse liner with Trim, for an SUV, was evaluated utilizing this new multilayer 3M treatment.
Authors
Citation
Gan, K., Herdtle, T., Anderson, B., and Yoo, T., "A Lightweight Multilayer Dissipative Material with High Acoustic Performance," SAE Technical Paper 2023-01-1083, 2023, https://doi.org/10.4271/2023-01-1083.Also In
References
- Yoo , T. , Gerdes , R. , and Shi , T. A Novel Dissipative Acoustic Material
- Biot , M.A. Theory of Propagation of Elastic Waves in a Fluid Saturated Porous Solid. I Low Frequency Range J. Acoust. Soc. Am. 28 1956 168 178
- Biot , M.A. Theory of Propagation of Elastic Waves in a Fluid Saturated Porous Solid. II Higher Frequency Range J. Acoust. Soc. Am. 28 1956 179 191
- ASTM 10.1520/C0522-03
- ASTM 10.1520/E1050-08
- ASTM