Acoustic Metamaterials

Metamaterials are artificial, heterogeneous, engineered structures with unusual properties like negative mass or negative stiffness. Realizations of such structures contain, e.g., internal resonators as substructures or consist of a periodic array of small-scale units. The peculiar apparent properties shall be exploited in three applications: sound transmission loss of lightweight double walls, low-frequency performance of noise barriers, and reduction of structure-borne sound. The project partners aim at a long-term market-driven cooperation on acoustic topics including transfer of results to the industry.