Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 144 for “"FDM"”.
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Optically Clear FDM Printing
… whether this process could be amended for FDM 3D printing or if there is another way to make optically clear lenses with an FDM printer. I discovered that the other traditional smoothing techniques were not sufficient to create a clear surface, but resin coating could result in a fully …
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FDM 3D tiskárna typu delta
Táto práca sa zaoberá technológiou 3D tlače. Hlavným cieľom práce bol návrh a testovanie 3D tlačiarne typu delta. Konštrukcia tlačiarne má šesťuholníkový tvar vďaka ktorému je pevnosť výslednej konštrukcie veľmi vysoká. Tlačiareň využíva základnú dosku Bigtreetech SKR mini E3 V3 na ktorej beží …
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Frequency stabilization of an optical FDM system
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1990.
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Investigation of sine-wave inputs for an FDM EIT system
… drive for a frequency division multiplexing (FDM) electrical impedance tomography (EIT) system. This thesis was commissioned by Prof. J. Tapson, on the 1 st of November 200 1. The goals were as follows: 1. Investigate the research done on this project by previous researchers. 2. Investigate …
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Návrh temperovaného stolu pro FDM 3D tiskárnu s využitím simulace MKP
… práce se zabývá návrhem vyhřívaného stolu pro FDM 3D tiskárnu pomocí metody konečných prvků. Je stručně popsána historie RepRap tiskáren, konstrukce a části, ze kterých se skládá. Jsou diskutovány dva způsoby vyhřívání, vyhřívání pomocí PCB desky a pomocí výkonových rezistorů na které se práce …
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Analysis of linear motion systems for a large scale FDM 3D printer
3D printers have been around for quite some time in one way or another. Only in resent years with programs such as Reprap, an open source 3D printer that can self replicate a lot of it's own parts, has helped greatly in bringing 3D printing into the price range and homes of hobbyists. When …
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Technologie rychlého prototypování za použití metody FDM a současně technologie vytavitelného modelu
Stanovení přesnosti voskových modelů je důležitým krokem v širším uplatnění metod rychlého prototypování v průmyslové výrobě odlitků. Výsledkem této práce je srovnání stupňů přesnosti voskových modelů, vyrobených ve formě silikonové a v matečné kovové formě, které se dále využijí v přesném lití. …
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Automated Loading and Unloading of the Stratasys FDM 1600 Rapid Prototyping System
… developed to automatically load and unload the FDM 1600 rapid prototyping system (Stratasys, Inc.). The modifications made to the FDM 1600 system are minimal. The door to the FDM 1600 build chamber is removed, and the .SML build files that are used to drive the FDM 1600 are modified at both ends …
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Meso-scale FDM material layout design strategies under manufacturability constraints and fracture conditions
… of this family is the fused deposition modeling (FDM) or fused filament fabrication (FFF) process. This process works by selectively depositing uniform, approximately isotropic beads or elements of molten thermoplastic material (typically structural engineering plastics) in a series of …
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An investigation into the dynamic implementation of a 16-electrode FDM Electrical Impedance Tomography System
… 16-electrode, Frequency Division Multiplexed (FDM) Electrical Impedance Tomography measurement system using square-wave excitation, as well as Neural Network (NN) based image reconstruction algorithms. Research succeeding Teague's investigated the use of sine-wave excitation on an single plane, …
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Using FDM and FEM to simulate the decarburization in AISI 1074 during heat processing and its impact
The metallurgical processes and the products developed from these processes have been the cornerstone on which our civilizations have developed and flourished. Many of the new materials that have been developed over centuries were often the result of serendipitous occurrences. Because of the …
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Characterization and development of polycaprolactone (PCL)/montmorillonite (MMT)/hydroxapaptite (HA) nano-composites for fused deposition modelling (FDM) process
… filament wire for Fused Deposition Modelling (FDM) was investigated. The polycaprolactone (PCL) filled montmorillonite (MMT) and Hydroxyapaptite (HA) composites were prepared by melting and compounding using a single screw extruder. The mechanical properties were assessed by tensile, flexural …
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Analysis of Bridge Deck Sections by Pseudo-compressibility method based on FDM and LES: Improving Performance through Implementation of Parallel Computing
<p>The incidence of wind on bridges produces static and dynamic loading that must be adequately addressed when designing bridges. Dynamic loading is the primary concern, as the amplitude of the structures response to the applied loading may be greatly amplified. Ideally, the bridge's properties …
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Stavba 3D tiskárny
Práce se zaměřuje na problematiku FDM 3D tisku. Část práce se věnuje vzniku a historii FDM 3D tisku. Porovnává jednotlivé typy FDM 3D tiskáren, jejich rozdílné konstrukce a popisuje jejich výhody a nevýhody. Dále se věnuje nejdůležitějším součástem každé FDM 3D tiskárny a popisuje nejběžnější …
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Modeling Astrophysical and Large-Scale Structure Signatures in Axion Cosmologies
… and cosmological imprints of fuzzy dark matter (FDM), a promising class of models which find ample motivation within theories of particle physics. Notably, the string axiverse hypothesis posits the existence of a multitude of pseudoscalar particles called axions with logarithmically distributed …
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Fused deposition modelling three-dimensional printing of solid dosage forms
… models, fused deposition modelling 3D-printing (FDM-3DP) has shown the potential to fabricate objects with various internal structures and the ability to introduce multiple specific functionalities. This thesis’s main aim was to understand printability in FDM-3DP and the factors influencing it, …
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Characterization and processing of composite PP/UHMWPE filament for fused deposition modelling application
… bone defect using Fused Deposition Modelling (FDM). This effort aimed to reduce the cost and processing time of manufacturing of a product like this and make it available to all. The effects of addition UHMWPE on the mechanical, thermal, rheology and toxicity of PP were investigated. All the …
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Method for Evaluating Changing Blood Perfusion
… model based on the finite-difference method (FDM) specifically designed to produce accurate results under different blood flow perfusion conditions. A comparative analysis concludes that the FDM-based model is consistent with traditional error function methods under constant blood perfusion …
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Additive manufactured biodegradable and biocompatible polymeric nanocomposite scaffolds for bone tissue engineering applications
… focus is on using the fused deposition modeling (FDM) method to manufacture functional biodegradable nanocomposite Polymeric Bone Tissue Scaffolds (PBTS). PBTSs are complex products, which have attracted significant attention in the literature in recent decades. In this study, a commercial and …
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