Related Experiment Video
Updated: Aug 29, 2025
09:39
Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing
Published on: June 28, 2024
1.1K
Characterization and Multiscale Modeling of the Mechanical Properties for FDM-Printed Copper-Reinforced PLA
Arda Özen1, Gregor Ganzosch2, Christina Völlmecke3
1Chair of Polymer Materials Science and Technologies, Institute of Material Science and Technology, Technische Universität Berlin, Ernst-Reuter-Platz 1, 10587 Berlin, Germany.
Polymers
|September 9, 2022
Summary
Optimizing fused deposition modeling (FDM) process parameters like layer thickness and raster width significantly impacts copper-reinforced poly(lactic acid) (PLA) properties. Lower layer thickness and wider raster width enhance mechanical strength and reduce porosity.
Area of Science:
- Materials Science
- Mechanical Engineering
- Additive Manufacturing
Background:
- Fused deposition modeling (FDM) is a widely used additive manufacturing technique known for its design flexibility.
- FDM-printed polymers and composites exhibit anisotropic properties due to manufacturing processes and inherent material characteristics.
- Investigating process parameter effects on composite materials is crucial for understanding and optimizing their performance.
Purpose of the Study:
- To investigate the influence of layer thickness and raster width on FDM-printed copper-reinforced poly(lactic acid) (PLA).
- To analyze the resulting mesostructural and microstructural changes and their effect on mechanical properties.
- To validate simulation models with experimental data for accurate material response prediction.
Main Methods:
- Mechanical characterization using high-resolution cameras.
- Optical microscopy for mesostructural analysis.
- Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) for microstructural investigation.
- 2D digital image correlation with machine learning for porosity and feature analysis.
- Finite element method (FEM) for multiscale homogenization simulations.
Main Results:
- A lower layer thickness and a greater raster width resulted in increased elasticity modulus and ultimate tensile strength (UTS).
- Optical microscopy confirmed that reduced layer thickness and increased raster width enhance inter-layer contact, lowering mesoscale porosity.
- Mesostructural features and porosity ratios were accurately quantified and modeled.
Conclusions:
- Process parameters critically influence the mesostructure and mechanical properties of FDM-printed copper-PLA composites.
- Optimized parameters (lower layer thickness, greater raster width) lead to superior mechanical performance.
- Mesoscale and multiscale simulations accurately predict material behavior, validated by experimental results.
