Measuring Bulk Properties of Sound-Absorbing Materials Using the Two-Source Method 2003-01-1586
The two-source method was used to measure the bulk properties (complex characteristic impedance and complex wavenumber) of sound-absorbing materials, and results were compared to those obtained with the more commonly used two-cavity method. The results indicated that the two-source method is superior to the two-cavity method for materials having low absorption. Several applications using bulk properties are then presented. These include: (1) predicting the absorptive properties of an arbitrary thickness absorbing material or (2) layered material and (3) using bulk properties for a multi-domain boundary element analysis.
Citation: Tao, Z., Herrin, D., and Seybert, A., "Measuring Bulk Properties of Sound-Absorbing Materials Using the Two-Source Method," SAE Technical Paper 2003-01-1586, 2003, https://doi.org/10.4271/2003-01-1586. Download Citation
Author(s):
Z. Tao, D. W. Herrin, A. F. Seybert
Affiliated:
University of Kentucky
Pages: 8
Event:
SAE 2003 Noise & Vibration Conference and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 2003 Transactions Journal of Passenger Cars - Mechanical Systems-V112-6
Related Topics:
Noise
Mathematical analysis
Materials properties
Test procedures
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