Even smooth surfaces are full of microscopic imperfections. These play a crucial role in engineering because they affect the functionality of components. The so-called roughness power spectrum is often used to analyse technical surfaces and optimise their properties. It is based on the superposition of wave functions and allows the determination of important roughness parameters such as Rz and Ra. Scientifically, the roughness power spectrum provides valuable information for contact-mechanical analyses thanks to the multi-scale consideration of all wavelengths. Finally, the invisible world of surfaces becomes usable.
Rough surfaces
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