TY  - JOUR
A1  - Frunzaverde, Doina
A1  - Cojocaru, Vasile
A1  - Bacescu, Nicoleta
A1  - Ciubotariu, Costel-Relu
A1  - Miclosina, Calin-Octavian
A1  - Turiac, Raul Rusalin
A1  - Marginean, Gabriela
T1  - The Influence of the Layer Height and the Filament Color on the Dimensional Accuracy and the Tensile Strength of FDM-Printed PLA Specimens
T2  - Polymers MDPI
N2  - Among the FDM process variables, one of the less addressed in previous research is the filament color. Moreover, if not explicitly targeted, the filament color is usually not even mentioned.
Aiming to point out if, and to what extent, the color of the PLA filaments influences the dimensional precision and the mechanical strength of FDM prints, the authors of the present research carried out experiments on tensile specimens. The variable parameters were the layer height (0.05 mm, 0.10 mm, 0.15 mm, 0.20 mm) and the material color (natural, black, red, grey). The experimental results clearly showed that the filament color is an influential factor for the dimensional accuracy as well as for the tensile strength of the FDM printed PLA parts. Moreover, the two way ANOVA test performed revealed that the strongest effect on the tensile strength was exerted by the PLA color (� 2 = 97.3%), followed by the layer height (� 2 = 85.5%) and the interaction between the PLA color and the layer height (� 2 = 80.0%). Under the same printing conditions, the best dimensional accuracy was ensured by the black PLA (0.17% width deviations, respectively 5.48% height deviations), whilst the grey PLA showed the highest ultimate tensile strength values (between 57.10 MPa and 59.82 MPa).
KW  - fused deposition modeling (FDM); fused filament fabrication (FFF); polylactic acid (PLA); layer height; layer thickness; filament color; PLA color; dimensional accuracy; tensile strength
Y1  - 2023
UR  - https://whge.opus.hbz-nrw.de/frontdoor/index/index/docId/4588
VL  - 2023
IS  - 15 / 10
SP  - 2377
ER  -