scholarly journals Multicriteria Analysis in Additive Manufacturing: An ELECTRE-MOr Based Approach

2021 ◽  
Author(s):  
Paula Drumond ◽  
Marcio Pereira Basílio ◽  
Igor Pinheiro de Araújo Costa ◽  
Daniel Augusto de Moura Pereira ◽  
Carlos Francisco Simões Gomes ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Unit Cost ◽  
Multicriteria Analysis ◽  
3D Printer ◽  
Waste Generation ◽  
Decision Aiding ◽  
Fused Deposition ◽  
Deposition Modeling

3D printing technologies define the essence of Additive Manufacturing and make possible the agile production of customized parts from different materials, with lower unit cost and waste generation. Currently, one of the most widespread 3D printer technologies is the Fused Deposition Modeling (FDM) type, which is the object of this paper. The choice of 3D printing equipment depends on the alignment of the purpose of use and technical knowledge to consider certain requirements. Therefore, this choice can be time-consuming and/or imprecise. In this sense, this work aimed to classify FDM-type 3D printer models by applying the ELECTRE-MOr method, a Multi-criteria Decision Aiding (MCDA) method. As a result, based on a categorization between classes, the FABER 10 alternative was the only one that presented class A performance in all evaluated scenarios, based on criteria defined by the experts consulted in this study.

scholarly journals Dual Sacrificial Molding: Fabricating 3D Microchannels with Overhang and Helical Features

Micromachines ◽  
2018 ◽  
Vol 9 (10) ◽  
pp. 523 ◽  
Author(s):  
Wei Goh ◽  
Michinao Hashimoto
Keyword(s):  
3D Printing ◽  
Fused Deposition Modeling ◽  
Microfluidic Devices ◽  
High Impact ◽  
3D Printer ◽  
Original Design ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Indispensable Tool ◽  
Single Material

Fused deposition modeling (FDM) has become an indispensable tool for 3D printing of molds used for sacrificial molding to fabricate microfluidic devices. The freedom of design of a mold is, however, restricted to the capabilities of the 3D printer and associated materials. Although FDM has been used to create a sacrificial mold made with polyvinyl alcohol (PVA) to produce 3D microchannels, microchannels with free-hanging geometries are still difficult to achieve. Herein, dual sacrificial molding was devised to fabricate microchannels with overhang or helical features in PDMS using two complementary materials. The method uses an FDM 3D printer equipped with two extruders and filaments made of high- impact polystyrene (HIPS) and PVA. HIPS was initially removed in limonene to reveal the PVA mold harboring the design of microchannels. The PVA mold was embedded in PDMS and subsequently removed in water to create microchannels with 3D geometries such as dual helices and multilayer pyramidal networks. The complementary pairing of the HIPS and PVA filaments during printing facilitated the support of suspended features of the PVA mold. The PVA mold was robust and retained the original design after the exposure to limonene. The resilience of the technique demonstrated here allows us to create microchannels with geometries not attainable with sacrificial molding with a mold printed with a single material.

Incorporation of fluorescent quantum dots for 3D printing and additive manufacturing applications

2018 ◽  
Vol 6 (28) ◽  
pp. 7584-7593 ◽  
Author(s):  
Cole D. Brubaker ◽  
Talitha M. Frecker ◽  
James R. McBride ◽  
Kemar R. Reid ◽  
G. Kane Jennings ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Quantum Dot ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Cadmium Sulfur Selenide ◽  
Functionalized Materials ◽  
Deposition Modeling ◽  
Manufacturing Applications

3D printing of cadmium sulfur selenide quantum dot functionalized materials compatible with fused deposition modeling type processes and applications.

scholarly journals Experience of implementation in educational process modern technologies of FDM 3D printing

2021 ◽  
pp. 55-59
Author(s):  
Petr Andrienko ◽  
Vladimir Vasilevskij ◽  
Ivan Vittsivskyi
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Current Transformer ◽  
Educational Process ◽  
Small Scale ◽  
Thermoplastic Material ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Modern Technologies

Fused Deposition Modeling is an additive manufacturing technology where a temperature-controlled head extrudes a thermoplastic material onto a build platform in a predetermined path. Standard, advanced thermoplastics and composites are used for printing. Among the areas of application for FDM printing, the main ones are rapid prototyping, as well as small-scale and batch production. The purpose of the work is the implementation of FDM 3D printing technology in the educational process of students in specialty 141 "Electroenergy, electrotechnics and electromechanics". The features of the technology of additive manufacturing of electrical apparatuses parts by the method of FDM printing have been investigated. Parts of four standard sizes were printed using ABS + and PLA plastics, namely, current transformer carcasses in the amount of 110 pieces and sensor bodies in the amount of 100 pieces. For printing, an FDM 3D printer was used built on the XZ Head Y Bed kinematic scheme with an open working chamber. The analysis of defects in finished products was carried out, which showed that the main defects are deviations of the actual dimensions and geometric shape of the finished products. Ways to prevent the occurrence of these defects are considered, namely, correcting the size of the model at the stage of preparing the model for printing, minimizing the filling density of the model, using brims in models, setting the optimal temperature of the working platform and simultaneously printing several products. The results of the study o features of the technology of additive manufacturing of electrical apparatuses parts by the method of FDM printing made it possible to develop a set of laboratory works for students of the specialty 141 "Electroenergy, electrotechnics and electromechanics".

scholarly journals Development and Accuracy Test of a Fused Deposition Modeling (FDM) 3D Printing using H-Bot Mechanism

2021 ◽  
Vol 3 (1) ◽  
pp. 46-53
Author(s):  
Budi Hadisujoto ◽  
Robby Wijaya
Keyword(s):  
3D Printing ◽  
Manufacturing Process ◽  
Fused Deposition Modeling ◽  
Industrial Revolution ◽  
3D Printer ◽  
Initial Development ◽  
Fused Deposition ◽  
Accuracy Test ◽  
Custom Made ◽  
Deposition Modeling

Additive manufacturing process known as the 3D printing process is an advanced manufacturing process including one of the components to support industrial revolution 4.0. The initial development of a 3D printing machine at Sampoerna University is the background of this research. The 3D printing setup of Fused Deposition Modeling (FDM) was built using H-bot moving mechanism by considering the rigidity aspect. The FDM printing method is selected due to its cost and reliability. In this early development, the brackets were custom made using a 3D printer with Polylactic Acid (PLA) material. The result showed that the software worked properly in accordance with the assembled mechanical and electrical parts. The 3D printer could print simple objects such as planes and cubes with small dimensions. However, the printing specimen still lacked accuracy caused by the less rigidity of linear rail brackets, less coplanar belt arrangement, and error in some electronic components.

scholarly journals Z-axis limit switch 3D printer

2020 ◽  
pp. 22-27
Author(s):  
Vadym Shalenko ◽  
Boris Korniychuk ◽  
Andriі Masluyk
Keyword(s):  
3D Printing ◽  
Large Scale ◽  
Fused Deposition Modeling ◽  
Selective Laser Sintering ◽  
3D Printer ◽  
Fused Deposition ◽  
Laminated Object Manufacturing ◽  
The Future ◽  
Deposition Modeling ◽  
Additive Methods

Not much time has passed since the appearance of the first 3D printer. Today there are many different printers. They differ in various 3D printing technologies, namely: Stereolithography – SL, Selective Laser Sintering, Fused Deposition Modeling – FDM, Laminated Object Manufacturing – LOM, Polyjet and Ployjet Matrix. In recent years, the spread of 3D printing technology has become and continues to be used more and more today. Of course, in the future we will see a large-scale spread of additive methods, but the practical application of 3D printing today is available to everyone. Melting deposition modeling technologies have become widespread and available. The authors in this article consider possible options for upgrading the mounting of the end sensor of the Z Axis and automating the process of calibration of the zero gap of the extruder nozzle relative to the working surface of the printer. This calibration is important. This affects the accuracy and printing process of the future plastic model. During the operation of the 3D printer, it is often necessary to service the extruder, which forces the process of calibrating the zero gap of the printer nozzle. Optimally correct selected nozzle clearance affects the accuracy, geometry of the model and printing as a whole. It also allows you to get rid of peeling off the model from the desktop surface and the destruction of the model during printing.

Finite Element Analysis of Additive Manufacturing Based on Fused Deposition Modeling: Distortions Prediction and Comparison With Experimental Data

2018 ◽  
Vol 141 (1) ◽  
Author(s):  
Alberto Cattenone ◽  
Simone Morganti ◽  
Gianluca Alaimo ◽  
Ferdinando Auricchio
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Step Size ◽  
Time Step ◽  
Time Step Size ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
The Impact ◽  
Functional Components

Additive manufacturing (or three-dimensional (3D) printing) is constantly growing as an innovative process for the production of complex-shape components. Among the seven recognized 3D printing technologies, fused deposition modeling (FDM) covers a very important role, not only for producing representative 3D models, but, mainly due to the development of innovative material like Peek and Ultem, also for realizing structurally functional components. However, being FDM a production process involving high thermal gradients, non-negligible deformations and residual stresses may affect the 3D printed component. In this work we focus on meso/macroscopic simulations of the FDM process using abaqus software. After describing in detail the methodological process, we investigate the impact of several parameters and modeling choices (e.g., mesh size, material model, time-step size) on simulation outcomes and we validate the obtained results with experimental measurements.

scholarly journals Polysaccharide 3D Printing for Drug Delivery Applications

Pharmaceutics ◽  
2022 ◽  
Vol 14 (1) ◽  
pp. 145
Author(s):  
Alexandra Zamboulis ◽  
Georgia Michailidou ◽  
Ioanna Koumentakou ◽  
Dimitrios N. Bikiaris
Keyword(s):  
Drug Delivery ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Large Family ◽  
Cellulose Derivatives ◽  
Natural Polymers ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Drug Delivery Applications

3D printing, or additive manufacturing, has gained considerable interest due to its versatility regarding design as well as in the large choice of materials. It is a powerful tool in the field of personalized pharmaceutical treatment, particularly crucial for pediatric and geriatric patients. Polysaccharides are abundant and inexpensive natural polymers, that are already widely used in the food industry and as excipients in pharmaceutical and cosmetic formulations. Due to their intrinsic properties, such as biocompatibility, biodegradability, non-immunogenicity, etc., polysaccharides are largely investigated as matrices for drug delivery. Although an increasing number of interesting reviews on additive manufacturing and drug delivery are being published, there is a gap concerning the printing of polysaccharides. In this article, we will review recent advances in the 3D printing of polysaccharides focused on drug delivery applications. Among the large family of polysaccharides, the present review will particularly focus on cellulose and cellulose derivatives, chitosan and sodium alginate, printed by fused deposition modeling and extrusion-based printing.

Additive Manufacturing as an Important Industry Player for the Next Decades

2019 ◽  
Vol 17 (16) ◽  
pp. 68-71
Author(s):  
Nastase-Dan Ciobota ◽  
Gheorghe Ion Gheorghe ◽  
Veronica Despa
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Rapid Prototyping ◽  
Full Advantage ◽  
Fused Deposition Modeling ◽  
Consumer Products ◽  
Motor Vehicles ◽  
Academic Institutions ◽  
Fused Deposition ◽  
Deposition Modeling

Abstract Additive Manufacturing (AM) concerns all classes of materials – polymers, metals, ceramics and glasses as well. For this reason, AM is in the focus of material scientists from all branches. Leaders of the industry realize that the possibilities of 3D printing are endless, and that these possibilities need ways and means to be taken full advantage of. Today, aerospace engineers are using the fused deposition modeling (FDM) method for rapid prototyping, part manufacturing, and tooling. They are followed by leaders and engineers from industry (industrial machines, motor vehicles, consumer products, medical/dental) but also from academic institutions and government/military.

scholarly journals Prototype for fit investigation

2021 ◽  
Vol 11 (1) ◽  
pp. 5-15
Author(s):  
Talal Alsardia ◽  
László Lovas ◽  
Péter Ficzere
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Physical Model ◽  
Fused Deposition Modeling ◽  
3 Dimensional ◽  
Promising Technology ◽  
3D Printing Technology ◽  
Fused Deposition ◽  
Deposition Modeling

Nowadays, additive manufacturing is a powerful tool and promising technology both for manufacturing and educational purposes. This work aims to present a case study of using 3 dimensional (3D) printing technology for fit investigations. It describes the creation of a physical model (prototype) by using the Fused Deposition Modeling (FDM) method. The prototype of two plates was made to perform an inspection how the prototype fits with other components.

Towards an ultra-affordable 3D bioprinter: A Heated Inductive-Enabled Syringe Pump Extrusion (HISPE) multifunction module for open-source FDM 3D printers

2021 ◽  
pp. 1-31
Author(s):  
Lamis R. Darwish ◽  
Mohamed T. El-Wakad ◽  
Mahmoud Farag
Keyword(s):  
3D Printing ◽  
Open Source ◽  
Fused Deposition Modeling ◽  
Cost Effective ◽  
3D Printer ◽  
Syringe Pump ◽  
Fused Deposition ◽  
Filament Diameter ◽  
3D Printers ◽  
Deposition Modeling

Abstract The extrusion systems of the widespread Fused Deposition Modeling (FDM) 3D printers enable printing only with materials in the filament form. This property hinders the usage of these FDM 3D printers in many fields where the printing materials are in forms other than filaments. Thus, this paper proposes a Heated Inductive-enabled Syringe Pump Extrusion (HISPE) multifunction open-source module with a potential application in bioprinting (i.e., extrusion-based bioprinting). The proposed HISPE module is designed to be cost-effective, simple, and easy to replicate. It is capable of replacing the conventional extrusion system of any open-source cartesian FDM 3D printer. This module widens both the range of the FDM 3D printing materials (e.g., bioinks, biopolymers, blends of materials, or composites) and their forms (e.g., hydrogels, powder, pellets, or flakes). The capabilities of the proposed module were investigated through 3D printing bone scaffolds with a filament diameter of 400 µm and pore size of 350 µm by a Polycaprolactone (PCL) biodegradable polymer in the pellets form. The morphological accuracy of the printed scaffolds was investigated by SEM. The investigation results confirm the accurateness of the proposed HISPE module in printing high-precision models.

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