A Lightweight Multilayer Dissipative Material with High Acoustic Performance 2023-01-1083
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.
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. Download Citation
Author(s):
KimTong Gan, Thomas Herdtle, Brian Anderson, Taewook Yoo
Affiliated:
3M, 3M Company
Pages: 6
Event:
Noise and Vibration Conference & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Acoustics
Noise
Harshness
Vibration
Transmissions
Manufacturing systems
Fibers
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