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.
Measuring Bulk Properties of Sound-Absorbing Materials Using the Two-Source Method
Sae Technical Papers
SAE 2003 Noise & Vibration Conference and Exhibition ; 2003
2003-05-05
Conference paper
English
Measuring Bulk Properties of Sound-Absorbing Materials Using the Two-Source Method
British Library Conference Proceedings | 2003
|Measuring bulk properties of sound-absorbing materials using the two-source method
Automotive engineering | 2003
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