Previously, the parameters that influence the acoustic properties of acoustic metamaterials have not been extensively researched. According to the current state of the art, there is no method for conception and manufacturing an acoustic metamaterial. This subject shall be taken up in the present work by identifying influencing variables on the sound reduction by a parameter variation. In the present work the effectiveness of acoustic metamaterials in noise reduction is to be investigated. Concepts of different geometries are to be designed and are to be manufactured by means of an additive manufacturing process. According to the current state of the art, simulations of acoustic metamaterials can not provide comprehensive and exact results. Therefore, experimental studies with the acoustic impedance tube and sound level meter will be carried out to examine the potential of the prototypes in sound absorption. Based on the experimental results, proposals for improving the properties of the demonstrators regarding minimal weight, maximal attenuation and broadband attenuation of the prototypes are to be suggested.
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Previously, the parameters that influence the acoustic properties of acoustic metamaterials have not been extensively researched. According to the current state of the art, there is no method for conception and manufacturing an acoustic metamaterial. This subject shall be taken up in the present work by identifying influencing variables on the sound reduction by a parameter variation. In the present work the effectiveness of acoustic metamaterials in noise reduction is to be investigated. Concepts...
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