2018
DOI: 10.1016/j.addma.2018.09.022
|View full text |Cite
|
Sign up to set email alerts
|

Experimental validation of a numerical model for the strand shape in material extrusion additive manufacturing

Abstract: We investigate experimentally and numerically the influence of the processing conditions on the cross-section of a strand printed by material extrusion additive manufacturing. The parts manufactured by this method generally suffer from a poor surface finish and a low dimensional accuracy, coming from the lack of control over the shape of the printed strands. Using optical microscopy, we have measured the cross-sections of the extruded strands, for different layer heights and printing speeds. Depending on the p… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1

Citation Types

9
136
2
3

Year Published

2019
2019
2022
2022

Publication Types

Select...
7

Relationship

1
6

Authors

Journals

citations
Cited by 92 publications
(150 citation statements)
references
References 52 publications
9
136
2
3
Order By: Relevance
“…Thus, the shape of the cross-section differs considerably to those shown in Ref. [23], where the deposited filament height is close to the nozzle gap size i.e. H ≈ G N .…”
Section: Resultscontrasting
confidence: 51%
See 3 more Smart Citations
“…Thus, the shape of the cross-section differs considerably to those shown in Ref. [23], where the deposited filament height is close to the nozzle gap size i.e. H ≈ G N .…”
Section: Resultscontrasting
confidence: 51%
“…More recently experimental comparisons have been presented by Gleadall et al [22], who employ a new computationallyefficient method based on conservation of volume to predict the geometry of a 3D lattice, and Comminal et al [23], who employ a full (isothermal) computational fluid dynamics (CFD) model of a single deposited filament. Extrusion of single polymer filaments has many applications including antenna manufacture with conductive filaments [24], custom polymer vascular inserts [25] as well as scaffolding structures [26] for the initial layers of the FFF process.…”
mentioning
confidence: 99%
See 2 more Smart Citations
“…Extrusion-based additive manufacturing (AM) is in its current state primarily dominated by layered strategies in which a geometry is manufactured by consolidating thin layers of material [1,2] using three degrees of freedom (DOF). This is also true for higher DOF systems, such as 6DOF robot arms [3], i.e., systems that, despite more than a decade of research efforts into multiple DOF job generation methods and manufacturing setups, still operate using 3DOF strategies [4][5][6][7].…”
Section: Introductionmentioning
confidence: 99%