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dc.creatorHabbal, Osama
dc.creatorAyoub, Georges
dc.creatorPannier, Christopher
dc.date.accessioned2021-12-07T18:15:39Z
dc.date.available2021-12-07T18:15:39Z
dc.date.issued2021
dc.identifier.urihttps://hdl.handle.net/2152/90745
dc.identifier.urihttp://dx.doi.org/10.26153/tsw/17664
dc.description.abstractFollowing from developments in continuously variable extrusion width in fused filament fabrication additive manufacturing, this work explores the combination of in-plane bead width variation with bead trajectory variation as a technique to improve in-plane strength in polymer material extrusion additive manufacturing. Sinusoidal in-plane waveforms are used for the extruder trajectory instead of maintaining a straight line. The varied bead width, in conjunction with the non-straight bead trajectory, reduces anisotropy of strength within the layer. The findings apply to fully dense infill of single layers, commonly called horizontal perimeters in common slicing/toolpath planning computer programs. Experimental tensile testing results show a 48.6% reduction in anisotropy of tensile strength driven by 43% and 29% increases in the ultimate tensile strength in the 0° and 45° orientations, respectively. However, this comes at the cost of 99.6% reduction in toughness in the 90° orientation. We also present the principal concept behind the machine code generating script, that allows for the increase and decrease of the extruded bead width continuously along the extruded bead.en_US
dc.language.isoengen_US
dc.publisherUniversity of Texas at Austinen_US
dc.relation.ispartof2021 International Solid Freeform Fabrication Symposiumen_US
dc.subjectvariable extrusion widthen_US
dc.subjectbead ithen_US
dc.subjectbead trajectoryen_US
dc.subjectin-plane strengthen_US
dc.subjectfused filament fabricationen_US
dc.subjectadditive manufacturingen_US
dc.titleVariable Extrusion Width for Interlocking Features in Fused Filament Fabrication 3D Printingen_US
dc.typeConference paperen_US
dc.description.departmentMechanical Engineeringen_US
dc.rights.restrictionOpenen_US


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