Compression Performance with Different Build Orientation of Fused Filament Fabrication Polylactic Acid, Acrylonitrile Butadiene Styrene, and Polyether Ether Ketone

As the most widely used additive manufacturing technology, Fused Filament Fabrication 3D printing technology has attracted more and more attention and research on its mechanical properties. In this paper, Polylactic Acid (PLA), Acrylonitrile Butadiene Styrene (ABS) and Poly Ether-Ether Ketone (PEEK) materials are selected as the research objects to study the material correlation of the compression performance of the printed parts in different build orientations. Under the premise of ensuring that the other process parameters are basically the same, the comparison test results show that, the compressive strength of PLA and PEEK in build orientation Z₁ is larger than that in build orientation Z₂. On the contrary, the compressive strength of ABS in build orientation Z₂ is larger, which reflects the material correlation of mechanical properties. The cone beam Computed Tomography nondestructive testing and Field Emission Scanning Electron Microscope are used to scan the test pieces before and after the experiment. According to the analysis of the testing images, the interlaminar pores caused in the printing process are the main reasons for the different performance responses and structural damage of the test pieces under the compression load.