About this Abstract |
Meeting |
MS&T24: Materials Science & Technology
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Symposium
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Additive Manufacturing Modeling, Simulation, and Machine Learning: Microstructure, Mechanics, and Process
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Presentation Title |
Modeling of the Impact of Defects on Mechanical Properties of 3D Printed Natural Carbon-Enhanced Polymer Composites |
Author(s) |
William Thomas Downs, Grace Baranack, Yahya Al-Majali |
On-Site Speaker (Planned) |
William Thomas Downs |
Abstract Scope |
This study investigates the impact of defects from fused deposition modeling (FDM) 3D printing on the mechanical performance of natural carbon-enhanced polymer composite (NCPC) materials. High-density polyethylene was compounded with natural carbons at various weight loadings (15-70 wt.%), producing 3D printable filaments compatible with commercial FDM printers. These filaments were used to 3D print test specimens to assess mechanical properties. In addition, computed tomography (CT) scans were obtained for the NCPC 3D printed structures to determine the percent porosity for each weight loading. CT scans were also used in the generation of a mesh to be input into the FEA software, ABAQUS, to simulate the deformation response due to the defects of the NCPC printed structure. The porous model was compared to a solid model validated through experimental testing, revealing significant strength loss with increased porosity. |