Tribological Study on Exrusion-Based, 3D-Printed, Polymer Samples

Additive manufacturing offers new opportunities regarding freedom of design, reduction of mass by hollow structures and fast time-to-market production. The current study offers insights on how the surface quality and the filling degrees of the printed parts impact their tribological behavior. This study was conducted on an MCR Tribometer from Anton Paar with a ball-on-three-plates test configuration.


Additive manufacturing is the latest among processes which are used to manufacture parts or components. This method has opened up many possibilities which were previously not feasible. Additive manufacturing offers multiple advantages over conventional processes such as cutting or injection molding in terms of design freedom, mass reduction, and fast development. Fused Filament Fabrication (FFF) is one of the many variants of additive manufacturing and the current application report deals with samples manufactured using this technique.

As the process deals with deposition of the single layers, the product might be susceptible to anisotropy, wherein the properties are direction-dependent. Depending on the printing parameters, porous structures and rough surfaces are produced. This report will deal with these issues of extrusion-based printed parts.

This study covers the deposition orientations of the printed surface, the difference between the first and the last printed layers, as well as the filling capacity of porous structures as a dry-running property.

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