The aim of this paper is to investigate the influence of different surface parameters on the adhesion behavior of dry-adhesive microstructures. Selective laser melting surfaces, which are partly reworked in a solid rolling process, are used to investigate the influence of different surface parameters. The surface parameters are determined using a laser scanning microscope. Experiments with three different test masses and dry-adhesive microstructures are carried out on the surfaces to determine the pull-off stress. The experiments show that the surface parameter root-means-square roughness has an influence on the adhesion behavior of the dry-adhesive microstructures. It becomes clear that the size relationship between the root-means-square roughness and the tip diameter of the dry-adhesive microstructures has a crucial role in the adhesion behavior. Moreover, increasing the pull-off stress reduces the number of surfaces where adhesion takes place. Furthermore, it can be seen that when the average element length of the ripple is reduced and the total height of the ripple, the arithmetic average roughness and the mean roughness depth are increased, the adhesion behavior is reduced. In addition, increasing the pull-off stress leads to a reduction in the number of surfaces to which adhesion occurs. The reduction in adhesion behavior can be explained by the impediment of contact formation between the mushroom heads of the dry-adhesive microstructures and the surface.

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Analysis of Surface Properties for Process-Reliable Handling with Dry-Adhesive Microstructures

  • Mirja Louisa Krüger,
  • Kirsten Tracht

摘要

The aim of this paper is to investigate the influence of different surface parameters on the adhesion behavior of dry-adhesive microstructures. Selective laser melting surfaces, which are partly reworked in a solid rolling process, are used to investigate the influence of different surface parameters. The surface parameters are determined using a laser scanning microscope. Experiments with three different test masses and dry-adhesive microstructures are carried out on the surfaces to determine the pull-off stress. The experiments show that the surface parameter root-means-square roughness has an influence on the adhesion behavior of the dry-adhesive microstructures. It becomes clear that the size relationship between the root-means-square roughness and the tip diameter of the dry-adhesive microstructures has a crucial role in the adhesion behavior. Moreover, increasing the pull-off stress reduces the number of surfaces where adhesion takes place. Furthermore, it can be seen that when the average element length of the ripple is reduced and the total height of the ripple, the arithmetic average roughness and the mean roughness depth are increased, the adhesion behavior is reduced. In addition, increasing the pull-off stress leads to a reduction in the number of surfaces to which adhesion occurs. The reduction in adhesion behavior can be explained by the impediment of contact formation between the mushroom heads of the dry-adhesive microstructures and the surface.