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Showing 1 to 20 of 38 for “"Fused Filament Fabrication (FFF)"”.
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Generation of Thermotropic Liquid Crystalline Polymer (TLCP)-Thermoplastic Composite Filaments and Their Processing in Fused Filament Fabrication (FFF)
One of the major limitations in Fused Filament Fabrication (FFF), a form of additive manufacturing, is the lack of composites with superior mechanical properties. Traditionally, carbon and glass fibers are widely used to improve the physical properties of polymeric matrices. However, the blending …
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Modelling material behavior for additively manufactured metals and polymers produced by fused filament fabrication
… as automotive, aerospace, and medical sectors. Fused Filament Fabrication (FFF) stands out as a prominent AM technique that builds the product layer by layer. Metal Fused Filament Fabrication (MFFF) employs a filament composed of metal powder and a polymer binder. The MFFF process involves three …
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Manufacturing Strain Sensor Via Printed Electronics Onto 3D Printed Substrates
… such as digital customization, reduced cost and fabrication time, and non-contact printing. These features enable inkjet printing to fabricate on novel, diverse substrates such as 3D printed substrates. 3D printing technology builds 3D structures with freedom of design, mass customization, low …
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Characterizing tensile loading responses of 3D printed samples
… a number of 3D printed samples created through Fused Filament Fabrication (FFF). Printed samples were made from ABS or PLA plastic. A range of infill densities from 25% to 100% were tested for each material. Additionally, samples were printed with layers at several angles relative to the tensile …
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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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Modification of Fused Filament Fabrication Printer to Print High Temperature Thermoplastics to Improve Z-Strength
A fused filament fabrication (FFF) desk top three dimensional printer was modified with a pre-deposition heating method using an infrared heat lamp in an omega shape around the printing nozzle to print high temperature materials and improve the tensile and flexural properties. The FFF additive …
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Development of High-Strength Composites with Sustainable Fibers for Structural Applications
… low-value biomass, specifically aspen fiber, in fused filament fabrication (FFF) to develop biocomposites. Various chemical treatments (NaOH, silane, and maleic anhydride (MA)) were applied to improve fiber compatibility with polylactic acid (PLA). Both untreated and treated fibers at 10% loading …
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Printing on Objects: Curved Layer Fused Filament Fabrication on Scanned Surfaces with a Parallel Deposition Machine
… While the technology for the most common type, Fused Filament Fabrication (FFF), has systematically improved and sales have increased, fundamentally, the capabilities of the machines have remained the same. FFF printers are still limited to depositing layers onto a flat build plate. This makes …
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The effects of layer deposition angle and layer temperature on the orthotropic mechanical properties of 3D printed PLA parts
<p>The mechanical properties of fused filament fabrication, FFF, additive manufactured parts are strongly affected by the specific printing parameters. Previous work in 3D printed PLA characterization under quasi-static tensile loading has focused on the effect of build-orientation and infill …
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Improving the strength of fused filament fabrication parts by non-planar alignment of material extrusion wih stress vectors
Fused Filament Fabrication (FFF), a prominent additive manufacturing technique, has been limited in producing end-use parts due to significant anisotropy and weak interlayer bonding. This thesis presents a novel approach to improve mechanical properties of FFF-produced parts through non-planar …
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A joule heating mechanism for high-speed fused filament fabrication
Extrusion-based additive manufacturing, known as fused filament fabrication (FFF), is one the most accessible methods of rapid prototyping, capable of handling a wide variety of engineering thermoplastics. Productivity limitations hinder the further application of FFF to both prototyping and …
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Creation of controlled polymer extrusion prediction methods in fused filament fabrication. An empirical model is presented for the prediction of geometric characteristics of polymer fused filament fabrication manufactured components
… a model for the procedures of manufacturing Fused Filament Fabrication (FFF) components by calculating required process parameters using empirical equations. Such an empirical model has been required within the FFF field of research for a considerable amount of time and will allow for an …
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Toolpath Planning Methodology for Multi-Gantry Fused Filament Fabrication 3D Printing
… industries manufacture and prototype products. Fused filament fabrication (FFF) is one of the most popular processes in AM as it is inexpensive, requires low maintenance, and has high material utilization. However, the biggest drawback that prevents FFF printing from being widely implemented in …
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Modeling abrasive wear of a 3D printer extruder drive mechanism
… more specifically 3D printing using fused filament fabrication (FFF), is a valuable technique; however, little has been done in developing a new mechanism for driving filament through the hot end of the 3D printer. This investigation focuses on a prototype extruder mechanism that …
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Structure-Property Relationships of 3D Printed Thermoplastics for Implantable Orthopedic Devices
… with relevant medical applications through fused filament fabrication (FFF) processing. Four FFF materials (PLA, PEEK, PEKK, and PPSU) are investigated with an emphasis on characterizing printed weld formation and the corresponding mechanical properties. Each material has properties that are …
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High throughput extrusion additive manufacturing – rate limits and system design
Fused filament fabrication (FFF) is an additive manufacturing (AM) process in which a polymer feedstock is melted and extruded through a nozzle while guided by a motion system, resulting in a three-dimensional part. FFF is applicable across a range of length scales and with a wide variety of …
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Collapsibility behaviour of ABS P400 and PMMA used as sacrificial pattern in direct investment casting process
… by two different types of technique which are Fused Filament Fabrication (FFF) and Polyjet technique. There were three different types of internal structures which are hollow, square and hexagon patterns. The thermal properties of the materials were studied by thermogravimetry analyzer (TGA) …
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Systematic assessment of the influence of voids on the material performance and failure in additively manufactured polymers.
Fused filament fabrication (FFF) is increasingly used for small-scale manufacturing for niche applications, however, its wide adoption for industrial-scale production of structural components requires significant improvement in the overall quality and functionality of the produced products. While …
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Wear of ultra-high molecular weight polyethylene manufactured with laser powder bed fusion
… use of extrusion-based AM techniques such as fused filament fabrication (FFF). Hence, in this work, we use laser-powder bed fusion (L-PBF) to manufacture UHMWPE specimens. We print and post-process cylindrical pin specimens and perform pin-on-disc wear testing against stainless steel …
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Additive Manufacturing in Spacecraft Design and In-Space Robotic Fabrication of Large Structures
… with the most commonly used process being Fused Filament Fabrication (FFF). Small satellites have also made significant advancements over the past two decades with the number of missions launched annually increased by orders of magnitude over that time span. Small satellites offer several …
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