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 |
Thermal Exposure Optimization for Enhanced Interlayer Strength in FFF-Printed ABS: A DOE and Microstructural Investigation |
Author(s) |
Tanvir Ahmed Shanto, Robert M Taylor, Ankur Jain, Rakin Ahmed, Parimal Patel |
On-Site Speaker (Planned) |
Tanvir Ahmed Shanto |
Abstract Scope |
This study systematically explores the combined effects of printhead configuration, print speed, and inter-specimen spacing on the toughness of Acrylonitrile Butadiene Styrene (ABS) components fabricated via Fused Filament Fabrication (FFF). Employing a 2 full factorial experimental design and ANOVA, significant influences and interactions among factor combinations were identified. The thermal history during printing was quantified through infrared tomography and Differential Scanning Calorimetry (DSC), enabling calculation of a bond potential metric based on residence time above the polymer's glass transition temperature (Tg). Representative specimens were further characterized by micro-computed tomography (礐T) and scanning electron microscopy (SEM) of fracture surfaces, revealing correlations between void morphology, interlayer fusion quality, and mechanical toughness. Results indicate that the modified nozzle design and optimized specimen spacing significantly enhance thermal exposure time, promoting polymer interdiffusion and mechanical performance. This integrated methodological framework offers valuable insights for process optimization and property enhancement in polymer-based additive manufacturing. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |