scholarly journals 3D-Extrusion Manufacturing of a Kaolinite Dough Taken in Its Pristine State

2021 ◽  
Vol 8 ◽  
Author(s):  
Séverine A. E. Boyer ◽  
Lucie Jandet ◽  
Alain Burr
Keyword(s):  
Process Parameters ◽  
Computer Aided Design ◽  
Raw Materials ◽  
Sustainable Manufacturing ◽  
Model Material ◽  
Optimization Of Process Parameters ◽  
Complex Shapes ◽  
Deposition Modeling ◽  
Aided Design

Ceramic is among the complicated materials to use in the design of fine objects. Complex shapes without any major defect are not easy to produce. In most of the cases, the production of ceramic parts is the results of three steps. Firstly, the “sculpture” of the raw piece by adding raw materials to lead to the final object. Secondly, the “drying” and finally the “high temperature oven-dry” of the dried raw object to transform the granular dough into a nice consistent compact material. Exploiting the special characteristics of ceramic is not only a thing of the past. Nowadays new possibilities, i.e., shapes and styles, can be offered in the use of ceramics, and especially where it concerns the application of the Additive Manufacturing (AM) concept. The combination of Computer Aided Design (CAD) to AM opens a completely new means of finding novel ways of processing final objects. By choosing to use kaolin clay without any chemical additions (or improvers) as “a model material,” the ability to produce controlled structures with freedom in design by additive deposition modeling is exposed. Discussions relate to the concomitant control of the process parameters, the kaolin hydration and the complexity of printed structures. The optimization of process parameters (nozzle speed, layer thickness, wall thickness) were defined with the calibration of the material flow. Both windows adjusting water content in dough (%wt) and imposing pressure in the tank of the 3D printer have been defined accordingly. The role of layer impression support was also found to be important. This study credits to use the state-of-the art technique (3D printing) to explore sustainable manufacturing of potteries.

scholarly journals Desain dan Pembuatan Prototype Piston Honda MEGAPRO FI Menggunakan 3D Printing

2020 ◽  
Vol 1 (2) ◽  
pp. 81-91
Author(s):  
Frince Marbun ◽  
Richard A.M. Napitupulu
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Layer By Layer ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Manufacturing Technologies ◽  
Aided Design

3D printing technology has great potential in today's manufacturing world, one of its uses is in making miniatures or prototypes of a product such as a piston. One of the most famous and inexpensive 3D printing (additive manufacturing) technologies is Fused Deposition Modeling (FDM), the principle FDM works by thermoplastic extrusion through a hot nozzle at melting temperature then the product is made layer by layer. The two most commonly used materials are ABS and PLA so it is very important to know the accuracy of product dimensions. FDM 3D Printing Technology is able to make duplicate products accurately using PLA material. FDM machines work by printing parts that have been designed by computer-aided design (CAD) and then exported in the form of STL or .stl files and uploaded to the slicer program to govern the printing press according to the design. Using Anet A8 brand 3D printing tools that are available to the public, Slicing of general CAD geometry files such as autocad and solidwork is the basis for making this object. This software is very important to facilitate the design process to be printed. Some examples of software that can be downloaded and used free of charge such as Repetier-Host and Cura. by changing the parameters in the slicer software is very influential in the 3D printing manufacturing process.

scholarly journals Designing Thin 2.5D Parts Optimized for Fused Deposition Modeling

2019 ◽  
pp. 134-164 ◽  
Author(s):  
James I. Novak ◽  
Mark Zer-Ern Liu ◽  
Jennifer Loy
Keyword(s):  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Outer Wall ◽  
Fused Deposition ◽  
Design Engineers ◽  
Test Pieces ◽  
New Knowledge ◽  
Deposition Modeling ◽  
Aided Design ◽  
Reference Graph

This chapter builds new knowledge for design engineers adopting fused deposition modeling (FDM) technology as an end manufacturing process, rather than simply as a prototyping process. Based on research into 2.5D printing and its use in real-world additive manufacturing situations, a study featuring 111 test pieces across the range of 0.4-4.0mm in thickness were analyzed in increments of 0.1mm to understand how these attributes affect the quality and print time of the parts and isolate specific dimensions which are optimized for the FDM process. The results revealed optimized zones where the outer wall, inner wall/s, and/or infill are produced as continuous extrusions significantly faster to print than thicknesses falling outside of optimized zones. As a result, a quick reference graph and several equations are presented based on fundamental FDM principles, allowing design engineers to implement optimized wall dimensions in computer-aided design (CAD) rather than leaving print optimization to technicians and manufacturers in the final process parameters.

Digital Technologies in Architecture and Engineering

2018 ◽  
pp. 618-653
Author(s):  
Sara Eloy ◽  
Miguel Sales Dias ◽  
Pedro Faria Lopes ◽  
Elisângela Vilar
Keyword(s):  
Computer Aided Design ◽  
Teaching And Learning ◽  
Systems Design ◽  
Digital Technologies ◽  
3D Modelling ◽  
Shape Grammar ◽  
Software Systems ◽  
Science Curricula ◽  
Aided Design

This chapter focuses on the development and adoption of new Multimedia, Computer Aided Design, and other ICT technologies for both Architecture and Computer Science curricula and highlights the multidisciplinary work that can be accomplished when these two areas work together. The authors describe in detail the addressed educational skills and the related developed research and highlight the contributions towards the improvements of teaching and learning in those areas. This chapter discusses the role of digital technologies, such as Virtual Reality, Augmented Reality, Multimedia, 3D Modelling software systems, Design Processes and its evaluation tools, such as Shape Grammar and Space Syntax, within the Architecture curricula.

Computer aided design of organic superbases: the role of intramolecular hydrogen bonding

2002 ◽  
Vol 26 (10) ◽  
pp. 1329-1334 ◽  
Author(s):  
Borislav Kovačević ◽  
Zvonimir B. Maksić ◽  
Robert Vianello ◽  
Miljenko Primorac
Keyword(s):  
Hydrogen Bonding ◽  
Computer Aided Design ◽  
Intramolecular Hydrogen Bonding ◽  
Computer Aided ◽  
Intramolecular Hydrogen ◽  
Aided Design

Trends in Electrical Engineering Education — A 25-Year Retrospective

1988 ◽  
Vol 25 (3) ◽  
pp. 209-217 ◽  
Keyword(s):  
Engineering Education ◽  
Computer Architecture ◽  
Computer Aided Design ◽  
Electrical Engineering ◽  
Electrical Machines ◽  
Project Work ◽  
Digital Electronics ◽  
Electrical Engineering Education ◽  
Aided Design

The paper considers the changes which have occurred in Electrical Engineering Education over the last twenty-five years, with reference to specific articles published during the lifetime of IJEEE. 25 years ago courses in electrical engineering included substantial coverage of mechanical engineering topics and detailed treatment of electrical machines. Today the emphasis has shifted very considerably towards digital electronics, computer architecture, programming and computer aided design (CAD). Greater attention is paid to project work and the role of the engineer in society.

scholarly journals The Role of 3D Printing and Computer Aided Design in Medicine at Healthcare Systems during Emergence of COVID-19

2020 ◽  
Vol 3 (8) ◽  
pp. 33-39
Author(s):  
Manas Chakraborty ◽  
Indranil Chatterjee ◽  
Toumica Ghosh ◽  
Sanchari Chatterjee ◽  
Suman Kumar Nath ◽  
...  
Keyword(s):  
3D Printing ◽  
Computer Aided Design ◽  
Healthcare Systems ◽  
Computer Aided ◽  
Aided Design

scholarly journals The Effects of Combined Infill Patterns on Mechanical Properties in FDM Process

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2792
Author(s):  
Mohammadreza Lalegani Dezaki ◽  
Mohd Khairol Anuar Mohd Ariffin
Keyword(s):  
Mechanical Properties ◽  
Computer Aided Design ◽  
Fused Deposition Modeling ◽  
Strength Analysis ◽  
Element Analysis ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed ◽  
Complex Features ◽  
Aided Design

Fused deposition modeling (FDM) is commonly used to print different products with highly complex features. Process parameters for FDM are divided into controllable or uncontrollable parameters. The most critical ones are built orientation, layer thickness, infill pattern, infill density, and nozzle diameter. This study investigates the effects of combined infill patterns in 3D printed products. Five patterns (solid, honeycomb, wiggle, grid, and rectilinear) were combined in samples to analyze their effects on mechanical properties for tensile strength analysis. Polylactic acid (PLA) samples were printed in different build orientations through two directions: flat and on-edge. The limitation was that the software and machine could not combine the infill patterns. Thus, the patterns were designed and assembled in computer aided design (CAD) software. Finite element analysis (FEA) was used to determine the patterns’ features and results showed honeycomb and grid have the highest strength while their weights were lighter compared to solid. Moreover, 0° samples in both flat and on-edge direction had the strongest layer adhesion and the best quality. In contrast, perpendicular samples like 60° and 75° showed poor adhesion and were the weakest specimens in both flat and on-edge, respectively. In brief, by increasing the build orientation, the strength decreases in this study.

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