scholarly journals Preparation of polypropylene/short glass fiber composite as Fused Deposition Modeling (FDM) filament

2019 ◽  
Vol 12 ◽  
pp. 205-222 ◽  
Author(s):  
Gholamhossein Sodeifian ◽  
Saghar Ghaseminejad ◽  
Ali Akbar Yousefi
Keyword(s):  
Glass Fiber ◽  
Fused Deposition Modeling ◽  
Fiber Composite ◽  
Fused Deposition ◽  
Short Glass Fiber ◽  
Glass Fiber Composite ◽  
Deposition Modeling ◽  
Short Glass

scholarly journals Analysis of the surface quality of polycaprolactam 3D prints enriched with carbon and glass fiber

2021 ◽  
Vol 338 ◽  
pp. 01005
Author(s):  
Damian Dzienniak ◽  
Jan Pawlik
Keyword(s):  
Glass Fiber ◽  
Surface Quality ◽  
Fused Deposition Modeling ◽  
Polyamide 6 ◽  
Fiber Glass ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
The Impact ◽  
The Relationship

Additive manufacturing has been gaining popularity and availability year by year, which has resulted in its dynamic development. The most common 3D printing method as of today, FDM (Fused Deposition Modeling), owing to its peculiarity, does not always guarantee producing objects with low surface roughness. The authors of the present article have taken on the analysis of the impact of FDM printing on the roughness of the filament thus processed. They also investigate the relationship between the roughness of the unprocessed filament (made of polycaprolactam, that is, polyamide 6 or PA6) with admixtures of other materials (carbon fiber, glass fiber) and the surface quality of the manufactured object. The main subject of the analysis is the side surfaces of 3D prints, as it is their quality that is usually directly dependent on many factors connected with the process of the laying of the consecutive layers. The authors check step by step whether there exists a pronounced relationship between the roughness of the original filament material and the roughness of the obtained surface.

scholarly journals Full-Density Fused Deposition Modeling Dimensional Error as a Function of Raster Angle and Build Orientation: Large Dataset for Eleven Materials

2018 ◽  
Author(s):  
Sherri L. Messimer ◽  
Tais Rocha Pereira ◽  
Albert E. Patterson ◽  
Maliha Lubna ◽  
Fabiano O. Drozda
Keyword(s):  
Fused Deposition Modeling ◽  
Fiber Composite ◽  
Impact Testing ◽  
Polymer Materials ◽  
Full Density ◽  
Large Dataset ◽  
Dimensional Error ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Accuracy And Repeatability

This report describes the collection of a large dataset (6930 measurement) on dimensional error in the fused deposition modeling (FDM) additive manufacturing process for full-density parts. Three different print orientations were studied, as well as seven raster angles (0°, 15°, 30°, 45°, 60°, 75°, and 90°) for the rectilinear infill pattern. All measurements were replicated ten times on ten different samples to ensure a comprehensive dataset. Eleven polymer materials were considered: acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), high-temperature PLA, wood-composite PLA, carbon-fiber-composite PLA, copper-composite PLA, aluminum-composite PLA, high-impact polystyrene (HIPS), polyethylene terephthalate glycol-enhanced (PETG), polycarbonate, and synthetic polyamide (nylon). The samples were ASTM-standard impact testing samples, since this geometry allows the measurement of error on three different scales; the nominal dimensions were 3.25mm thick, 63.5mm long, and 12.7mm wide. This dataset is intended to give engineers and product designers a benchmark for judging the accuracy and repeatability of the FDM process for use in manufacturing of end-user products.

scholarly journals Full-Density Fused Deposition Modeling Dimensional Error as a Function of Raster Angle and Build Orientation: Large Dataset for Eleven Materials

2019 ◽  
Vol 3 (1) ◽  
pp. 6 ◽  
Author(s):  
Sherri Messimer ◽  
Tais Pereira ◽  
Albert Patterson ◽  
Maliha Lubna ◽  
Fabiano Drozda
Keyword(s):  
Fused Deposition Modeling ◽  
Fiber Composite ◽  
Impact Testing ◽  
Polymer Materials ◽  
Full Density ◽  
Large Dataset ◽  
Dimensional Error ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Accuracy And Repeatability

This paper describes the collection of a large dataset (6930 measurements) on dimensional error in the fused deposition modeling (FDM) additive manufacturing process for full-density parts. Three different print orientations were studied, as well as seven raster angles ( 0 ∘ , 15 ∘ , 30 ∘ , 45 ∘ , 60 ∘ , 75 ∘ , and 90 ∘ ) for the rectilinear infill pattern. All measurements were replicated ten times on ten different samples to ensure a comprehensive dataset. Eleven polymer materials were considered: acrylonitrile butadiene styrene (ABS), polylactic acid (PLA), high-temperature PLA, wood-composite PLA, carbon-fiber-composite PLA, copper-composite PLA, aluminum-composite PLA, high-impact polystyrene (HIPS), polyethylene terephthalate glycol-enhanced (PETG), polycarbonate, and synthetic polyamide (nylon). The samples were ASTM-standard impact-testing samples, since this geometry allows the measurement of error on three different scales; the nominal dimensions were 3 . 25 mm thick, 63 . 5 mm long, and 12 . 7 mm wide. This dataset is intended to give engineers and product designers a basis for judging the accuracy and repeatability of the FDM process for use in manufacturing of end-user products.

An innovative design approach in three-dimensional printing of continuous fiber–reinforced thermoplastic composites via fused deposition modeling process: In-melt simultaneous impregnation

2019 ◽  
Vol 234 (1-2) ◽  
pp. 243-259 ◽  
Author(s):  
Behnam Akhoundi ◽  
Amir Hossein Behravesh ◽  
Arvin Bagheri Saed
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Thermoplastic Composites ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
Fiber Volume ◽  
Fused Deposition ◽  
Deposition Modeling

In this study, an innovative method was devised and implemented to produce continuous glass fiber–reinforced thermoplastic composites via a fused deposition modeling three-dimensional printer to enhance the mechanical properties of the printed products. In the extrusion-based, or filament-based, additive manufacturing process, namely, fused deposition modeling, the parts are basically formed via deposition of the material in the molten state, and thus embedding continuous fiber, in a solid form, is highly challenging. Hence, a nozzle system was designed and manufactured to feed the continuous fiber into the molten polymer simultaneously, which is called, here, in-melt simultaneous impregnation. With the presence of continuous fibers in the nozzle outlet, the feed of filament was calculatedly adjusted in the G-codes depending on the fiber volume percentage, to produce sound flow, and consistent deposition. Composite products were produced with various geometrical shapes. Via analysis and close control of the filament feeding, as a critical requirement to produce a sound printed product, composites with various fiber volume percentages were printed. Also, the mechanical properties of the printed parts with 30% by volume of glass fiber were measured. The results of the tensile test indicated that the continuous fibers were appropriately and effectively embedded that could result in remarkable increases in tensile strength and modulus of the samples, higher than 700%. The resulted values of tensile modulus were consistent with the values calculated via the rule of mixture. In addition, scanning electron microscopic images of the fracture sections suggest a sound adhesion between fibers and the matrix.

Biodegradable 3D Printed Polymer Microneedles for Transdermal Drug Delivery

2018 ◽  
Author(s):  
Michael A. Luzuriaga ◽  
Danielle R. Berry ◽  
John C. Reagan ◽  
Ronald A. Smaldone ◽  
Jeremiah J. Gassensmith
Keyword(s):  
Drug Delivery ◽  
3D Printing ◽  
Transdermal Drug Delivery ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Modeling Software ◽  
Deposition Modeling ◽  
3D Printed ◽  
Microfabrication Technique ◽  
Mechanical Strengths

Biodegradable polymer microneedle (MN) arrays are an emerging class of transdermal drug delivery devices that promise a painless and sanitary alternative to syringes; however, prototyping bespoke needle architectures is expensive and requires production of new master templates. Here, we present a new microfabrication technique for MNs using fused deposition modeling (FDM) 3D printing using polylactic acid, an FDA approved, renewable, biodegradable, thermoplastic material. We show how this natural degradability can be exploited to overcome a key challenge of FDM 3D printing, in particular the low resolution of these printers. We improved the feature size of the printed parts significantly by developing a post fabrication chemical etching protocol, which allowed us to access tip sizes as small as 1 μm. With 3D modeling software, various MN shapes were designed and printed rapidly with custom needle density, length, and shape. Scanning electron microscopy confirmed that our method resulted in needle tip sizes in the range of 1 – 55 µm, which could successfully penetrate and break off into porcine skin. We have also shown that these MNs have comparable mechanical strengths to currently fabricated MNs and we further demonstrated how the swellability of PLA can be exploited to load small molecule drugs and how its degradability in skin can release those small molecules over time.

Sign in / Sign up

Export Citation Format

Share Document