Publications by authors named "Carlos Belei"
Article Synopsis
- Fused-filament fabrication (FFF) is an affordable and easy-to-use additive manufacturing method with numerous materials, but it involves many overlooked process variables.
- This study focuses on less-studied variables like raster orientation angles and feeding rates to evaluate their effects on the mechanical properties of short carbon fiber-reinforced polyamide made by FFF.
- The results showed that a combination of stacking layers at 0°/90° and +30°/-30° provides optimal tensile and flexural strengths, while increasing the flow rate did not enhance part density or mechanical properties.
This study intends to contribute to the state of the art of Fused-Filament Fabrication (FFF) of short-fiber-reinforced polyamides by optimizing process parameters to improve the performance of printed parts under uniaxial tensile loading. This was performed using two different approaches: a more traditional 2k full factorial design of experiments (DoE) and multiple polynomial regression using an algorithm implementing machine learning (ML) principles such as train-test split and cross-validation. Evaluated parameters included extrusion and printing bed temperatures, layer height and printing speed.
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