Continuous Fiber Reinforced; Dimensional Accuracy; 3D Printing
Abstract :
[en] Material Extrusion (MEX) technology for continuous fiber reinforced thermoplastic composites (CFRTCs) is based on the extrusion of a continuous fiber to create three-dimensional composite objects layer by layer. This technology explores three distinct methods: pre-impregnated filament, dual-nozzle, and coextrusion. The goal of this paper is to compare two printers, one using the dual nozzle technology and another relying on coextrusion. The first printer, Mark Two of Markforged, is based on dual-nozzle technology. The second printer, the Anisoprint Composer A4, stands out for its coextrusion method. Three adaptive Geometrical Benchmark Test Artifacts (GBTA), proposed by Spitaels et al. were fabricated with each printer to determine their dimensional performances. Measurements are taken using a Coordinate Measuring Machine (CMM) Wenzel LH 54. The overall deviation results of the two printers are around the IT14 standard. Deviations for measurements between 1 and 10 mm are greater compared to dimensions exceeding 10 mm, averaging around IT 12. Along the Y-axis, Markforged shows smaller deviations, attributed to its smaller print bed dimension compared to Anisoprint. Additionally, Z-axis deviations are lower than those along other axes, suggesting both printers have better precision in vertical build plate movement compared to print head movement. Notably, significant deviations are observed at the center of the GBTA in comparison to the other three axes (X, Y, and Z) for both printers.
Disciplines :
Mechanical engineering
Author, co-author :
Ochana, Imi; Science and Technology Research Unit, Haute Ecole Provinciale de Hainaut Condorcet, Square Hierneaux 2, 6000 Charleroi, Belgium ; Machine Design and Production Engineering Lab, Research Institute for Science and Material Engineering, University of Mons, Mons, Belgium
Ducobu, François ; Université de Mons - UMONS > Faculté Polytechnique > Service de Génie Mécanique
Spitaels, Laurent ; Université de Mons - UMONS > Faculté Polytechnique > Service de Génie Mécanique
Homrani, Mohamed Khalil ; Université de Mons - UMONS > Faculté Polytechnique > Service de Génie Mécanique
Demarbaix, Anthonin ; Science and Technology Research Unit, Haute Ecole Provinciale de Hainaut Condorcet, Square Hierneaux 2, 6000 Charleroi, Belgium
Language :
English
Title :
Comparative accuracy analysis of continuous fiber composite printers: Coextrusion vs. dual-nozzle technology
Publication date :
15 May 2024
Journal title :
Materials Research Proceedings, Vol. 41
Peer reviewed :
Peer reviewed
Research unit :
F707 - Génie Mécanique
Research institute :
R400 - Institut de Recherche en Science et Ingénierie des Matériaux
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