Machine acoustics

The low noise level of products is an increasingly important requirement, not least due to legal requirements such as the EU Machinery Directive. The approach to noise avoidance is based on the machine acoustic transmission chain. From a design point of view, it is therefore particularly worthwhile to be able to predict the acoustic product properties at an early stage of product development. In this context, the IMW is involved in the development of design rules for the design of low-noise products (Design for Acoustics). Another field of activity is the further development of the basic machine acoustic equation and the modeling of acoustic product properties. In the propagation of sound in solid bodies (structure-borne sound), the points at which the cross-section or the material changes are of particular interest, as there is a so-called impedance jump that can significantly influence the propagation of sound. In addition, the focus is currently on determining the acoustic properties of products made from renewable raw materials and the design of innovative absorber concepts.