Dresden 2017 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 17: Poster: Polymer Networks and Dynamics
CPP 17.2: Poster
Montag, 20. März 2017, 18:30–21:00, P1C
Theoretical and experimental investigations of sealing systems — •Felix Senf1, Robin Fonk2, Sean Schneeweiß2, Ulrich Simon2, and Othmar Marti1 — 1Institut für Experimentelle Physik, Ulm — 2Ulmer Zentrum für wissenschaftliches Rechnen, Ulm
The following investigation is about leak tightness between surface structures as well as material data to describe critical leakage systems. In technical applications the sealing of hardware components is described with leakage rates based on different boundaries of the system. In general, physical rules state that an absolutely sealed system is not possible. Different parameters like materials, surface structures, roughness parameters, closing forces and not least the design of the sealing system influence the function of the sealing joint. Engineer standards to describe the surface influence of sealing are only based on roughness parameters of the hardware surface. They don't consider that roughness parameters are only statistical parameters with limited information to the real sealing behavior of the joint. Therefore the real systems can show high tolerances in sealing limits. The research program is about understanding the alignment between elastomers and metal surface structures and the resulting open volumes. The theory of contact problems, FEA simulation tasks and compression experiments help us to describe this alignment. An experimental set up for leakage measurements and the combination with CFD simulation are the main part to understand the leakage nature more detailed. Out of this toolbox we want to create a new practical understanding on how sealing works.