Abstract This paper proposed a type of lightweight multilayer honeycomb membrane-type acoustic metamaterials (AMs) and the transmission loss is studied experimentally. It is demonstrated that lightweight honeycomb sandwich panel AMs can break the mass law and obtain the great sound transmission loss at a light-weight. The mass per cell area of the metamaterial structure has 0.29 kg/ m 2 only and the total thickness of the structure is 4.2 mm, but the average sound transmission loss (STL) can achieve 17 dB. Experimental results from the impedance tube are presented to validate the conclusion and show that the STL peak frequency can be tuned to specific values by varying the combination of cell structures and membrane properties.

中文翻译：

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一种轻质多层蜂窝膜式声学超材料

摘要 本文提出了一种轻质多层蜂窝膜式声学超材料（AMs），并对其传输损耗进行了实验研究。结果表明，轻质蜂窝夹芯板 AMs 可以打破质量定律，并在重量轻的情况下获得巨大的传声损失。超材料结构的每单元面积质量仅为0.29 kg/m 2 ，结构总厚度为4.2 mm，但平均声传输损失（STL）可以达到17 dB。提出了阻抗管的实验结果以验证结论，并表明可以通过改变细胞结构和膜特性的组合将 STL 峰值频率调整到特定值。