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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.

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Author of HS ReutlingenSchilling, Richard
Erschienen in:Polymers
Place of publication:Basel
Document Type:Article
Year of Publication:2018
Tag:additive manufacturing; anisotropy; desktop 3D printing; digital fabrication; fused deposition modeling; fused filament fabrication; interlayer bonds; mechanical strength; polylactic acid
Page Number:11
First Page:1
Last Page:11
Article Number:313
DDC classes:540 Chemie
Open Access?:Ja
Licence (German):License Logo  Creative Commons - CC BY - Namensnennung 4.0 International