Tribological and mechanical properties investigation of 3D printed polymers using DLP technique

• Main Authors: Hanon, Muammel M., Zsidai, László
• Format: Conference Proceeding
• Language: English
• Subjects: Coefficient of friction; Friction; Mechanical properties; Orientation effects; Post-processing; Rapid prototyping; Surface finish; Surface roughness; Surface structure; Tensile strain; Tensile strength; Tensile stress; Three dimensional printing; Tribology; Ultraviolet radiation; Wear
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0000267

Experiments have been accomplished to determine the tribological and mechanical properties of parts fabricated utilizing 3D printing based digital light processing (DLP). The effect of print orientation angle on the friction and wear properties as well as the tensile strength was studied, which revealed anisotropic behavior. The 3D printed specimens were subjected to post-processing with heating and UV light to achieve better cured surface finish for the tensile, friction, and wear tests. Due to its relevance, the surface roughness was evaluated as well. Tribological testing results reported that the post-processing leads up to smaller wear depth and greater coefficient of friction for the specimens as compared to the non-post processed samples. Mechanical experiment results indicated that tensile stress of DLP 3D printed test pieces was improved by post-processing. In contrast, the tensile strain was much better for the specimens without post-curing process. Furthermore, the surface structure of the worn area after tribology test for various print orientation angle specimens has been discussed.