Mechanical properties and failure mechanisms of 3D-printed PLA scaffolds: A preliminary study

Abstract

Polylactic acid (PLA) porous composite scaffolds with three different infill patterns were subjected to compression testing. The composites were fabricated by 3D printing based on Fused Filament Fabrication (FFF) technology. Stress-strain curves were obtained which allowed to identify Young’s modulus, yield point and residual strain of samples. 3D tomography images were taken before and after deformation. Comparison between images corresponding to a particular sample were used to identify deformation and failure mechanisms.

Surface texture and thermo-mechanical properties of material extruded and ironed polylactic acid

“…PLA/clay nanocomposites reported storage modulus values between 2.75 and 3.75 GPa while ABS/montmorillonite nanocomposites varied between 1.1 and 1.6 GPa. Distinct relationships between the strength of material extruded PLA and process parameters, such as infill density and print orientation are known to significantly impact the mechanical response and failure mode [26].…”