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Influence of FFF process parameters and macrostructure homogeneity on PLA impact strength
Abstract
The article presents studies of the additive manufacturing printing parameters influence on
the impact strength of PLA samples obtained by the fused filament fabrication (FFF) method. Two process
variables were taken into account in the research program: the height of the printed layer and
the printing temperature. An optical microscope was used to analyze the cross-section image (breakthrough)
of the samples. The impact strength was determined at −40°C and 23°C. Selected geometric
features of the macrostructure (uniformity and thickness of individual layers, voids) determined on the
basis of the sample cross-section image analysis, enhanced the possibility of assessing the PLA impact
strength, depending on the adopted process variables and the temperature at which the experiment was
carried out.
Keywords
PLA ; 3D printing ; Impact strength ; process parameters ; additive manufacturing PLA ; Druk 3D ; udarność ; parametry procesowe ; wytwarzanie przyrostowe
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