About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Mechanical Performance of 3D Printed PLA Across Varying Parameters: Correlation With Intenral Porosity via X-Ray CT |
Author(s) |
Roman Chavez, Nathan Nevarez, Fidel Baez Avila, Borys Drach |
On-Site Speaker (Planned) |
Roman Chavez |
Abstract Scope |
This study investigates the impact of layer height (LH) and line width (LW) on the porosity and mechanical performance of polylactic acid (PLA) fabricated via fused deposition modeling using a Bambu Lab P1S 3D printer. Cylindrical specimens with 8-mm diameter were manufactured, then imaged via X-ray computed tomography to analyze porosity at different LH and LW mixtures. Dog bone specimens were manufactured in accordance with ASTM D638 in both horizontal and vertical orientations and subjected to uniaxial tensile testing. Yield strength (YS) and ductility are significantly more sensitive to the examined printing parameters compared to Young’s modulus. There is a positive correlation between YS and LW in the case of vertical orientation of the dog bone specimens, and negative in the case of horizontal. No clear dependence of mechanical properties on pore volume fraction was observed in our study. Pore network morphologies are presented for each combination of parameters. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |