Friction and wear of additive manufactured polymers in dry contact

Abstract

The use of additive manufacturing (AM) is widely advancing the scope of rapid prototyping and manufacturing in tribological applications and material science research. However, there is still limited research focused on investigating the frictional and wear performance of AM polymers, especially of Polyjet manufactured parts. This work focuses on the effect of varying the contact load on the friction and wear mechanisms of additively manufactured acrylonitrile butadiene styrene (3D ABS) and Verogray polymers fabricated using Polyjet technology. Loads of 1, 5 and 10 N were applied under dry sliding contact with a 52100 steel counterface at room temperature. Dependence of friction and wear on the surface orientation to the sliding direction is noted. The results demonstrate that at 1 N load, the friction coefficient is primarily dependent on the orientation of the surface to the sliding direction. However, at higher loads of 5 N and 10 N, this dependency is shown to be a function of the bulk material properties rather than the surface roughness. Further correlation between the surface morphology and wear rate is shown to be dependent on the bulk material properties and the applied load. The results from this study provide alternate application uses for Polyjet materials in metal-polymer tribo-contacts for improved friction and wear performance.

Evaluation of the printing strategies design on the mechanical and tribological response of acrylonitrile styrene acrylate (ASA) additive manufacturing parts

“…3.1 Effects of fused filament fabrication parameters on surface finish of acrylonitrile styrene acrylate Surface finish, in terms of roughness, plays an important role in the friction and sliding behavior of the materials. The size and micro-geometrical characteristics of the surface topography have a significant influence in the mechanisms and wear rate of surfaces under tribological conditions (Aziz et al, 2020;Dangnan et al, 2020). Under these considerations, high and thin asperities can be removed by lower contact pressures, resulting in higher wear rates and unstable friction coefficients, mainly because of the appearance of attached debris in the sliding track.…”

The State of the Art of Material Jetting—A Critical Review

“…They applied different contact loads (1, 5 and 10N) and stated that in MJ parts, the wear rate depends on the applied load and surface orientation to the sliding direction. For both parallel and perpendicular orientations, the highest coefficient of friction was observed under a 1N load [ 62 ]. It was stated that with plastic reinforcements, the elastic modulus of elastomeric parts produced by MJ can be increased by 6.79%–21.03% [ 24 , 25 ].…”

Investigating the Influence of Friction and Material Wear on Triboelectric Charge Transfer in Metal-Polymer Contacts

“…An important factor to consider with regards to the application and use of polymers within a tribological contact is that polymers often exhibit low mechanical moduli [46]; which in turn may possibly lead to significant material wear within polymer contacts [47]. The unfortunate phenomenon that accompanies higher applied loads in dry friction is an increase in these material wear rates [48]. The ability to simultaneously measure both the friction response and electrical output of the UMT-TENG contact gives an insight into how tribology influences triboelectrification within it.…”