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De wereld van 3D printen is aan het veranderen naar een techniek die ook beschikbaar is voor de gewone consument. Om 3D printers meer toegankelijk te kunnen maken moet de kostprijs sterk naar omlaag en moet de kwaliteit verbeteren. Momenteel is het printmateriaal één van de grootste kosten bij een 3D printer. Als printmateriaal wordt bij huidige 3D printers steeds filament gebruikt, een kunststof draad vervaardigd uit granules. Deze masterproef onderzoekt de mogelijkheid om een compacte low-budget granule-extruder te ontwikkelen die het filament vervangt door de veel goedkopere granules. Met het oog op een implementatie in een 3D printer is een ontwerp opgesteld. Het RepRap project is hiervoor gebruikt als referentie. Voor een implementatie in een 3D printsysteem moet een extruder compact zijn en toch een stabiele werking hebben. Deze masterproef ontwikkeld en evalueert een dergelijk prototype. Resultaten tonen aan dat het prototype een stabiele werking heeft. Het gaat hier om een alleenstaand prototype. Voor werkelijke implementatie moet er verder onderzoek verricht worden en moet een verbeterd prototype getest worden als 3D printkop. Deze masterproef vormt een goede basis om dit te verwezenlijken. The world of 3D printing is changing to a technique which becomes available for ordinary consumers. To make 3D printing more accessible, the cost should be reduced strongly and the quality has to improve. Currently the printing materials are one of the biggest costs in a 3D printer. The 3D printers existing today all use filament as printing material. This is a plastic wire which is made from granules. This thesis examines the possibility to develop a compact low budget granule extruder which is capable of replacing the filament with much cheaper granules. With a view to an implementation in a 3D printer a design is drawn up. Therefor the RepRap project is used as reference. For an implementation in a 3D printing system, an extruder must be compact and still have a stable state of operation. In this thesis such a prototype is developed and evaluated. Results show that the prototype has a stable operation. It involves a standalone prototype. An actual implementation as a 3D printing head needs further research and demands an improved prototype to be tested. This thesis provides a good basis to achieve this.
3D printer. --- CAD - CAD. --- Extrusie. --- FDM. --- Granule-extruder. --- Kunststofverwerking - plastic processing. --- Low-budget. --- Productietechniek - production engineering. --- RepRap. --- T130-produktietechnologie. --- T210-toegepaste-plasticiteitsleer.
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Long description: Biographical note: Thomas Kaffka hat als Softwareingenieur sowie Projektleiter in Softwarehäusern und Wirtschaftsprüfungs- und Beratungsgesellschaften gearbeitet. Er ist ein echter Maker und beschäftigt sich mit verschiedenen Themen wie etwa dem Bau von LEGO-Robotern, der Künstlicher Intelligenzforschung sowie dem 3D-Druck.
Blender --- 3D-Modellierung --- buch --- ABS --- SketchUp --- FDM --- FFF --- PLA --- Slicer --- 3D-Scan --- Filament --- Paint 3D --- 3D Builder --- 3D-Drucker --- 3D-Modeling --- Druckbettheizung
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Biographical note: Detlef Ridder hat langjährige Erfahrung im Bereich CAD und bereits zahlreiche Bücher zu AutoCAD, Inventor, Revit und ArchiCAD veröffentlicht. Er gibt Schulungen zu diesen Programmen und zu CNC und weiß daher, welche Themen für Einsteiger besonders wichtig sind. Long description:
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Le travail est de un nouveau matériau d’intérêt pour les industriels wallons (exemple matériaux avec matrice polymère avec charges constituées de particules magnétiques dur). Plusieurs options devront être étudiées en fonction des limitations technologiques avant de commencer les travaux pratiques. A la fin du travail, une pièce éprouvette devra être fabriquée dans le matériau développé en guise de démonstrateur afin de pouvoir caractériser la qualité du résultat. Le projet sera divisé en 4 axes : • Le compoundage : Le but de cette tâche est d’étudier la « processabilité » du polymère dans la « compoundeuse » de Sirris en fonction du type de charge utilisée (Granulométrie, morphologie, composition…) Délivrable : évaluer la qualité du granulat (homogénéité du taux de charge entre granulats) en fonction du type de particules et du taux de charge utilisé. • Le Polymer processing : •Dans un premier temps cette tâche aura pour but de mettre au point la mise en oeuvre du fil polymère non chargé afin de maitriser les paramètres de l’extrusion à des fins de mise en oeuvre par additive manufacturing. •Dans un deuxième temps cette tâche consistera à réaliser un fil directement « processable » sur machine FDM à partir des granulats obtenus avec la Compoundeuse de Sirris. •Délivrable : évaluer la qualité de calibration du fil en fonction du taux de charge (0 à X %) et des paramètres de la phase de compoundage. • Additive manufacturing : •Cette tâche consistera à valider la processualité du fil développé sur les machines FDM de Sirris. •Ceci consistera donc à identifier la meilleure paramétrie pour obtenir des éprouvettes de caractérisation démontrant la validité du matériaux mis en oeuvre. (par exemple : Bonne adhésion entre couches, bonne homogénéité de la charge, …) •Délivrable : évaluer l’abattement des propriétés mécaniques (adhésion des couches) en fonction du taux de charge
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The family of technologies collectively known as additive manufacturing (AM) technologies, and often called 3D-printing technologies, is rapidly revolutionizing industrial production. AM’s potential to produce intricate and customized parts starting from a digital 3D model makes it one of the main pillars for the forthcoming Industry 4.0. Thanks to its advantages over traditional manufacturing methodologies, AM finds potential applicability in virtually all production fields. As a natural consequence of this, research in this field is primarily focused on the development of novel materials and techniques for 3D printing. This Special Issue of Technologies, titled “3D Printing Technologies”, aims at promoting the latest knowledge in materials, processes, and applications for AM. It is composed of six contributions, authored by influential scientists in the field of advanced 3D printing. The intended audience includes professors, graduate students, researchers, engineers and specialists working in the field of AM.
Technology: general issues --- History of engineering & technology --- electroless metallization --- catalysts --- 3D printing --- RS-333 alloy --- SLM 3DP --- in situ SEM tensile testing --- DIC analysis --- Ncorr --- poly(lactic acid) (PLA) --- shape-memory polymer (SMP) --- fused deposition modeling (FDM) --- infill pattern --- microrobots --- 3D printed --- drug delivery --- hydrogels --- alginate --- prototyping --- surface finishing --- physical vapor deposition --- mechanical properties --- composites --- fused deposition modeling --- surface quality --- chest wall --- surgery
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The family of technologies collectively known as additive manufacturing (AM) technologies, and often called 3D-printing technologies, is rapidly revolutionizing industrial production. AM’s potential to produce intricate and customized parts starting from a digital 3D model makes it one of the main pillars for the forthcoming Industry 4.0. Thanks to its advantages over traditional manufacturing methodologies, AM finds potential applicability in virtually all production fields. As a natural consequence of this, research in this field is primarily focused on the development of novel materials and techniques for 3D printing. This Special Issue of Technologies, titled “3D Printing Technologies”, aims at promoting the latest knowledge in materials, processes, and applications for AM. It is composed of six contributions, authored by influential scientists in the field of advanced 3D printing. The intended audience includes professors, graduate students, researchers, engineers and specialists working in the field of AM.
electroless metallization --- catalysts --- 3D printing --- RS-333 alloy --- SLM 3DP --- in situ SEM tensile testing --- DIC analysis --- Ncorr --- poly(lactic acid) (PLA) --- shape-memory polymer (SMP) --- fused deposition modeling (FDM) --- infill pattern --- microrobots --- 3D printed --- drug delivery --- hydrogels --- alginate --- prototyping --- surface finishing --- physical vapor deposition --- mechanical properties --- composites --- fused deposition modeling --- surface quality --- chest wall --- surgery
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The family of technologies collectively known as additive manufacturing (AM) technologies, and often called 3D-printing technologies, is rapidly revolutionizing industrial production. AM’s potential to produce intricate and customized parts starting from a digital 3D model makes it one of the main pillars for the forthcoming Industry 4.0. Thanks to its advantages over traditional manufacturing methodologies, AM finds potential applicability in virtually all production fields. As a natural consequence of this, research in this field is primarily focused on the development of novel materials and techniques for 3D printing. This Special Issue of Technologies, titled “3D Printing Technologies”, aims at promoting the latest knowledge in materials, processes, and applications for AM. It is composed of six contributions, authored by influential scientists in the field of advanced 3D printing. The intended audience includes professors, graduate students, researchers, engineers and specialists working in the field of AM.
Technology: general issues --- History of engineering & technology --- electroless metallization --- catalysts --- 3D printing --- RS-333 alloy --- SLM 3DP --- in situ SEM tensile testing --- DIC analysis --- Ncorr --- poly(lactic acid) (PLA) --- shape-memory polymer (SMP) --- fused deposition modeling (FDM) --- infill pattern --- microrobots --- 3D printed --- drug delivery --- hydrogels --- alginate --- prototyping --- surface finishing --- physical vapor deposition --- mechanical properties --- composites --- fused deposition modeling --- surface quality --- chest wall --- surgery --- electroless metallization --- catalysts --- 3D printing --- RS-333 alloy --- SLM 3DP --- in situ SEM tensile testing --- DIC analysis --- Ncorr --- poly(lactic acid) (PLA) --- shape-memory polymer (SMP) --- fused deposition modeling (FDM) --- infill pattern --- microrobots --- 3D printed --- drug delivery --- hydrogels --- alginate --- prototyping --- surface finishing --- physical vapor deposition --- mechanical properties --- composites --- fused deposition modeling --- surface quality --- chest wall --- surgery
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Concern around environmental issues facing society has grown significantly in recent years. Reduction in damages resulting from both industrial and domestic waste has become a key topic as a means to address environmental problems and the exhaustion of natural resources. Likewise, the use of materials of polymeric origin in applications such as tissue regeneration, controlled release of medicines, packaging, soil remediation, etc., makes the development of materials biodegradable in biological media increasingly important. Recently, significant progress has been achieved in the creation of biodegradable polymeric formulations with functionalities similar to those of non-biodegradable polymers, both of natural and of synthetic origin, extending their applicability to fields such as food packaging, electronics, production of health-related materials, agriculture, etc. In this context, biodegradable nanocomposites offer new and exciting possibilities. This book deals with the development of functional polymer nanocomposites that can undergo biodegradation in different media, including biological systems, soils, landfills, etc. Original and review articles covering aspects of polymer science and technology, such as synthesis, processing, characterization, properties, and applications of functional biodegradable nanocomposites for different applications, are included in this book.
Technology: general issues --- History of engineering & technology --- Materials science --- biodegradable --- biocompatible --- electronics --- nanocomposites --- polymer microgels --- hybrid microgels --- thermoresponsive --- rheology --- scaling theory --- fractal analysis --- poly(lactic acid) --- oligomeric lactic acid --- eco-friendly silver nanoparticles --- biopolymer properties --- antimicrobial activity --- packaging --- nanomaterials --- nanomedicine --- poly (lactic acid) --- shape memory properties --- biomedical --- thermoplastic polymer --- melt spinning --- thermoplastic yarn --- electric conductivity --- wearable textile --- biodegradable polymers --- coextrusion --- multilayer film --- barrier properties --- montmorillonite fillers --- 3D printing --- poly(lactic acid) (PLA) --- additive manufacturing (AM) --- fused deposition modeling (FDM) --- cellulose --- carbon nanoparticles --- n/a
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Three-dimensional printing, or additive manufacturing, is an emerging manufacturing process. Research and development are being performed worldwide to provide a better understanding of the science and technology of 3D printing to make high-quality parts in a cost-effective and time-efficient manner. This book includes contemporary, unique, and impactful research on 3D printing from leading organizations worldwide.
Technology: general issues --- metal additive manufacturing --- directed energy deposition --- alloy design --- elemental powder mixture --- advanced materials --- composition control --- porosity --- additive technology --- SLM --- computer tomography --- additive manufacture --- SLM Ti-6Al-4V --- variability --- anisotropy --- fatigue crack growth --- Ti-6Al-4V alloy --- laser powder bed fusion --- powder bed temperature --- microstructure evolution --- mechanical properties --- additive manufacturing --- pore --- pulsed emission --- X-ray imaging --- non-spherical --- hydride-dehydride (HDH) Ti-6Al-4V powder --- post-process heat treatment --- microstructure --- ductile fracture --- stress state --- Ti-6Al-4V --- 316L stainless steel --- soft materials --- smart materials --- stretchable devices --- FRP --- 3D printing --- defense --- FDM --- topology optimization --- neural network --- neural style transfer --- binder jetting --- sands --- vacuum thermoforming --- fiber reinforced composite --- n/a
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Three-dimensional (3D) printing has evolved massively during the last years. The 3D printing technologies offer various advantages, including: i) tailor-made design, ii) rapid prototyping, and iii) manufacturing of complex structures. Importantly, 3D printing is currently finding its potential in tissue engineering, wound dressings, tissue models for drug testing, prosthesis, and biosensors, to name a few. One important factor is the optimized composition of inks that can facilitate the deposition of cells, fabrication of vascularized tissue and the structuring of complex constructs that are similar to functional organs. Biocomposite inks can include synthetic and natural polymers, such as poly (ε-caprolactone), polylactic acid, collagen, hyaluronic acid, alginate, nanocellulose, and may be complemented with cross-linkers to stabilize the constructs and with bioactive molecules to add functionality. Inks that contain living cells are referred to as bioinks and the process as 3D bioprinting. Some of the key aspects of the formulation of bioinks are, e.g., the tailoring of mechanical properties, biocompatibility and the rheological behavior of the ink which may affect the cell viability, proliferation, and cell differentiation.The current Special Issue emphasizes the bio-technological engineering of novel biocomposite inks for various 3D printing technologies, also considering important aspects in the production and use of bioinks.
Information technology industries --- bacteria biofabrication --- 3D printing --- tissue engineering --- probiotic food --- pine sawdust --- soda ethanol pulping --- nanocellulose --- cytotoxicity --- absorption --- wound dressings --- bioprinting --- cellulose --- hydrogel --- physical cross-linking --- 3D bioprinting --- biocomposite ink --- tubular tissue --- tubular organ --- bacterial nanocellulose --- cellulose nanofibrils --- cellulose nanocrystals --- bioink --- collagen --- ECM --- extracellular matrix --- bioinks --- biomanufacturing --- biocomposite --- forest-based MFC --- fibrils --- additive manufacturing --- artificial limb --- fused deposition modeling (FDM) --- biofabrication --- hydrogels --- growth factor cocktail --- bioactive scaffold --- printability --- carboxylated agarose --- free-standing --- human nasal chondrocytes --- clinical translational --- polyhydroxyalkanoates --- scaffolds --- biomedicine --- drug delivery --- vessel stenting --- cancer --- 3D cell culture --- CNF --- cancer stemness --- n/a
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