Strength of PLA components fabricated with fused deposition technology using a desktop 3D printer as a function of geometrical parameters of the process
- The current paper studies the influence of geometrical parameters of the fused deposition modeling (FDM) - fused filament fabrication (FFF) 3D printing process on printed part strength for open source desktop 3D printers and the most popular material used for that purpose - i.e., polylactic acid (PLA). The study was conducted using a set of different nozzles (0.4, 0.6, and 0.8 mm) and a range of layer heights from the minimum to maximum physical limits of the machine. To assess print strength, a novel assessment method is proposed. A tubular sample is loaded in the weakest direction (across layers) in a three point bending fixture. Mesostructure evaluation through scanning electronic microscopy (SEM) scans of the samples was used to explain the obtained results. We detected a significant influence of geometric process parameters on sample mesostructure, and consequently, on sample strength.
| Author of HS Reutlingen | Schilling, Richard |
|---|---|
| URN: | urn:nbn:de:bsz:rt2-opus4-21751 |
| DOI: | https://doi.org/10.3390/polym10030313 |
| ISSN: | 2073-4360 |
| Published in: | Polymers |
| Publisher: | MDPI |
| Place of publication: | Basel |
| Document Type: | Journal article |
| Language: | English |
| Publication year: | 2018 |
| Tag: | additive manufacturing; anisotropy; desktop 3D printing; digital fabrication; fused deposition modeling; fused filament fabrication; interlayer bonds; mechanical strength; polylactic acid |
| Volume: | 10 |
| Issue: | 3 |
| Page Number: | 11 |
| First Page: | 1 |
| Last Page: | 11 |
| Article Number: | 313 |
| DDC classes: | 540 Chemie |
| Open access?: | Ja |
| Licence (German): |  Creative Commons - CC BY - Namensnennung 4.0 International |
