Browse Publications Technical Papers 2019-01-1577
2019-06-05

Optimization of Multi-Layer Panel Constructions using Experimental Modeling via Transfer Matrix Method 2019-01-1577

In a previous paper, a method was introduced to predict the sound transmission loss (STL) performance of multilayer panel constructions using a measurement-based transfer matrix method. The technique is unique because the characterization of the poro-elastic material is strictly measurement based and does not require modeling the material. In this paper, it is demonstrated how the technique is used to optimize the STL of lightweight, multi-layer panel constructions. Measured properties of several decoupler materials (shoddy and foam) are combined with sheet metal and barrier layers to find optimal combinations. The material properties are measured with the impedance tube per ASTM E2611.

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