Fused Deposition Modeling FDM

The composite was used for fused deposition modelling (FDM). FDM is a filament based rapid prototyping system (80). The application of FDM demands that the material can be made in feedstock filament form. 

Stratasys Inc., Minneapolis, WI, U.S.A. Fused Deposition Modelling (FDM) Thermoplastic filaments (PA, etc.)as well as wax melting the plastic in a mini extruder... 

SFF encompasses many different approaches to additive fabrication, including Stereolithography (SLA), Selective Laser Sintering (SLS), Electron Beam Melting (EBM), Laminated Object Manufacturing (LOM), Fused Deposition Modeling (FDM), and 3D Printing. 

Other attempts were made to synthesize solvent-free template arrays constituted of PCL nanowires, which would be able to encapsulate active ingredients and enhance mesenchymal stem cell performances. Zein et al. created alternating ply designs of PCL using the fused deposition model (FDM) method. Their results demonstrated that FDM could be used to produce scaffolds having adequate porosity for bone tissue engineering, while having mechanical properties just equal to soft trabecular bones. 

Fused deposition modeling (FDM) is a technique that builds plastic objects by extmsion of a polymer-wax filament through a nozzle (Fig. 6.52). A modification of the technique, referred to as fused deposition of ceramics (FDC), has been developed to create ceramic components from particle-filled polymer filaments (73). Ceramic-polymer mixtures used in FDC are similar to those described earlier for injection molding of ceramics. The mixture is first extmded to form filaments with a diameter of 2 mm, after which the spooled filaments are fed into a computer-controlled extrusion head. Extrusion of the plastic mixture through a nozzle is used to form the object layer by layer. Subsequent processing steps follow those described for injection molded bodies. 

Fused deposition modeling (FDM) is a technology where the melt extrasion method is used to deposit filaments of thermal plastics according to a specific pattern. Similar to 3DP, the layout for FDM consists of a printhead able to move along X and Y directions above a build platform. The polymer is extraded through the heated nozzle and laid down as filaments according to the CAD design. The build platform is then lowered and another layer can be built, until the scaffold is completed. ... 

Skowyra J, Pietrzak K, Alhnan M (2015) Fabrication of extended-release patient-tailored prednisolone tablets via fused deposition modelling (FDM) 3D printing. Eur J Pharm Sci 68 11-17. doi 10.1016/j.ejps.2014.11.009... 

This research focused on the technology of Fused Deposition Modeling (FDM), because it offers lower equipment cost (Kochan, 2000) and as such, it is within reach of small and medium enterprises and research institutions. 

All the lock components were prototyped at Federal University of Itajuba (UNIFEI), at the Dimension SST 768 machine, by the Fused Deposition Modeling (FDM), as Figure 6 shows. 

FIGURE 4.137 Extrusion processes on the example of Fused Deposition Modeling (FDM) Advantages and Disadvantages... 

Fused deposition modeling (FDM) is an extrusion process developed by Stratasys. Parts are built up in layers from extruded plastic strands. In principle, the FDM process is suitable for all materials that can be melted and extruded. Plastics such as ABS, ABSi, PC-ABS, PC, PC-ISO, and PPSF are typical of the materials used. The material for extrusion must be in filament form, with a circular cross-section and a diameter between 1 and 2 mm. The initial data in 3D CAD form are generally converted to SLA format, and this data is used to create 2D cross-sections as slices through the part to be produced. Although the material solidifies very quickly, structures made of support material are needed for cantilever structures. These supporting structures are subsequently easy to remove. Filaments of different materials are needed for the part and the supporting structure. Drive rollers carry the two filaments to an electrically heated plastifier, where the filaments are heated to just below melting temperature (Fig. 7.3). 

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