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Showing 1 to 20 of 64 for “"Fused Deposition Modeling"”.
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Multiple Independent Extrusion Heads for Fused Deposition Modeling
Fused Deposition Modeling is a rapid prototyping technique in which miniature extruders melt filaments of polymeric materials. The extruder is mounted to an X/Y stage, and a computer controls the machine so that the polymer is deposited in only the appropriate locations. Material is deposited on …
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Modeling print time for a fused deposition modeling machine
… predict printing time of any given object on a fused deposition modeling machine. Preliminary experiments are conducted to detect the significant factors that cause the error between actual and estimated submission time. A proposed method models the movements and heating processes of the …
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Characterization of mechanical properties of fused deposition modeling manufactured polycarbonate composites
… polycarbonate composites manufactured by the Fused Deposition Modeling (FDM) method. The approach comprises of tensile testing of FDM manufactured samples following the ASTM D 638-03 and ASTM D 3039-00 standards. This gives the mechanical properties of either individual polycarbonate fibers or …
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Fused Deposition Modeling of Composite Reinforced by Continuous Ultra-High Molecular Weight Polyethylene Fiber
Fused Deposition Modeling (FDM) of composites with compliant high-strength fibers couldexpand opportunities for the design and fabrication of complex compliant structures. However, this area of additive manufacturing (AM) is currently not reported in the open literature. This study pursued …
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Investigation of Traditional and Alternate Living Hinge Designs for Fused Deposition Modeling Additive Manufacturing Process
… designs in the additive manufacturing process of fused deposition modeling. Initial research included comparing numerical and analytical linear analyses on a traditional living hinge design. The second research consisted of tensile testing for the material properties of the Acrylonitrile Butadiene …
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Effect of print orientation on mechanical material behavior in fused deposition modeling 3-D printing
… of the methods used for 3-D printing, such as Fused Deposition Modeling (FDM), are layer-based processes, resulting in anisotropic material behavior of the printed object. Thus, the print orientation of the object is a crucial factor in its mechanical properties, such as strength and elastic …
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Material Coefficient of Thermal Expansion Investigation for Use in Additive Manufacturing Fused Deposition Modeling for Composite Tooling
<p>Polymer matrix composites are being used to manufacture light weight, high stiffness aircraft structures. These structures are often manufactured from carbon fiber reinforced epoxy. When these structures are damaged, they must be repaired to restore strength to the component to avoid the cost …
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Feasibility of waste-derived hydroxyapatite mixed with ultra high molecular weight polyethylene composites for fused deposition modeling process
… (HAp) reinforced UHMWPE composites for Fused Deposition Modeling (FDM) process was investigated. Compared to the commercial HAp, derived from natural resources such as corals, fish bone and eggshells have been converted into HAp and show the similarity with the commercial HAp. Ca/P ratio …
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Simulátor 3D tiskárny
… založenou na nejrozšířenější metodě 3D tisku - Fused Deposition Modeling. Vstupem simulátoru je 3D model ve formátu STL. Pro daný 3D model simulátor poskytuje odhad celkové doby tisku. Součástí simulace je také vizualizace procesu 3D tisku. Výsledkem práce je přenositelný program testovaný pod …
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A comparative study of rapid prototyping systems
… Selective Laser Sintering (SLS), PolyJet, Fused Deposition Modeling (FDM), and 3D Printing (3DP) at the University of Missouri, Columbia. The results can be used as a preliminary guide to help users determine optimal strategies for rapid prototyping system selection.
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Mechanické vlastnosti velkorozměrových 3D tištěných dílů
… vůči podložce. Vzorky byly tištěny technologií Fused Deposition Modeling (FDM) na robotickém rameni KUKA KR8 R1620. Jejich tvar byl navržen tak, aby se eliminovaly koncentrace napětí vzniklé výrobou, dále byly vzorky testovány tahovou zkouškou. Nakonec proběhlo vzájemné porovnání maximální …
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Osteogenic and chondrogenic differentiation of rat bone marrow stromal cells in 3D culture with novel PCL-TCP scaffolds
… scaffolds. PCL-TCP scaffolds fabricated by fused deposition modeling (FDM), are honeycombed, highly reproducible bioresorbable 3D structures with a completely interconnected pore network and custom-tailored porosity and pore size. After expansion in vitro, BMSCs were enzymatically lifted and …
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Modeling fused filament fabrication machine height accuracy through layer thickness variation
This thesis addresses the modeling and prediction of total height error of a 3D printed part using a layer-by-layer approach. Layer to layer thickness error is modeled across the build height of Polyactic acid (PLA) and Acrylonitrile butadiene styrene (ABS) parts. A height error compensation model …
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Defextiles: 3D Printing Quasi Woven Textiles via Underextrusion
… to produce tulle-like fabrics on unmodified fused deposition modeling (FDM) printers. The under-extrusion of filament is a common cause of print failure, resulting in objects with periodic gap defects. In this paper, we demonstrate that these defects can be finely controlled to quickly print …
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High-throughput extrusion additive manufacturing using electrically resistive preheating
… additive manufacturing, commonly known as fused deposition modeling (FDM) or fused filament fabrication (FFF) is incredibly useful in industry for a variety of reasons, including rapid prototyping and the ability to create complex geometries easily. However, its further adoption is limited …
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Development of a biofidelic cranial bone surrogate using additive manufacturing
… were explored, including material jetting, fused deposition modeling (FDM), and stereolithography (SLA). Several materials were selected for investigation, with varying sample types for each material. Mechanical evaluation included both tensile and flexural testing. Porosity was introduced …
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Integration of Physically-based and Data-driven Approaches for Thermal Field Prediction in Additive Manufacturing
… problem. The framework consists of (i) thermal modeling using 3D finite element analysis (FEA), (ii) surrogate modeling using functional Gaussian process, and (iii) Bayesian calibration using the thermal imaging data. Based on heat transfer laws, I first investigate the transient thermal …
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Integration and visualization of rapid prototyping and reverse engineering.
… for simulating rapid prototyping process---FDM (Fused Deposition Modeling). The visual simulation technique simulates the part prior to fabricating the physical model. Careful examination of the virtual prototype before the actual fabrication can help minimize unwanted design iterations. The …
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Advancing sustainability in additive manufacturing: material formulation and process development for recycled PET and PET/HDPE blend
… to develop sustainable feedstock materials for Fused Deposition Modeling (FDM) and pellet-based 3D printing (or additive manufacturing-AM). Firstly, reactive chain extension was employed to enhance the rheological properties of r-PET, improving its melt strength, viscosity, and printability for …
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