In the “MetaVib” project, manufacturing technologies for the industrial application of vibroacoustic metamaterials are being studied. For metallic structures, new forming production process chains are being developed to manufacture high-precision filigree structures and integrate VAMM in sheet metal and car body components. When it comes to sheet metal forming, the aim is to further refine the stamping process so that semi-finished sheet products containing VAMMs can be manufactured. This will reduce the scattering of resonator geometries to a defined minimum and also enable reproducible production. In areas where these processes reach their limits, for example in terms of the material or the geometries that can be produced, there are plans to cleverly combine them with typically slower processes, in particular 3D printing (plastic and metal).
Fraunhofer IBP's role in the project
In the “MetaVib” project, Fraunhofer IBP is responsible for developing methods for acoustic metamaterials using the application scenario of pipe silencers and silencer baffles as an example.