About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Feasibility of Concave Quadrilateral Nozzle Design for Producing Square-Shaped Extrudates in 3D Printing |
Author(s) |
Rawan Elsersawy, Arafater Rahman, Mainul Hossain , Mohammad Abu Hasan Khondoker |
On-Site Speaker (Planned) |
Mohammad Abu Hasan Khondoker |
Abstract Scope |
Conventional extrusion 3D printing uses round nozzles, which results in poor interlayer bonding and surface quality, needing an extra stage of post-processing. This study investigates a custom-designed 3D printed nozzle with a concave quadrilateral orifice to generate square cross-section extrudates utilizing die swell. Square extrudates, when aligned, are expected to improve interlayer and intralayer adhesion while decreasing surface roughness. A customized hot end was developed, and six different 1.75 mm filaments (PLA, ABS, PVA, CNT, Carbon Black, and TPE) were used. Microscopic imaging and image processing were used to evaluate the extrudates' geometric accuracy and uniformity. The findings confirmed the nozzle's ability to produce square extrudates with high shape fidelity, demonstrating the potential of non-circular nozzles to increase mechanical performance and surface. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |