Stress State of 3D-Printed Plastic Dies at Thin-Sheet Aluminum Bending

2021 ◽  
Vol 316 ◽  
pp. 110-115
Author(s):  
L.B. Aksenov ◽  
I.Y. Kononov ◽  
N.G. Kolbasnikov
Keyword(s):  
3D Printing ◽  
Mechanical Characteristics ◽  
Plastic Material ◽  
Thin Sheet ◽  
Small Scale ◽  
Scale Production ◽  
Sheet Bending ◽  
Sheet Aluminum ◽  
3D Printed ◽  
Positive Properties

The paper deals with the problems and prospects of forming thin-sheet blanks, using ABS plastic dies, made by 3D printing. This technology combines the positive properties of plastic material and 3D-printing. The mechanical characteristics of the plastic were determined experimentally. On the basis of computer modeling, the dependence between the angle of bending the blank and the stresses arising in the dies is established. As a result of computer simulation and physical experiment, the value of the maximum thickness 0.5 mm for the aluminum 3003 blank is obtained. In this case, there is no plastic deformation of the plastic tool. The use of plastic dies does not require lubrication. The technology of sheet bending, using a plastic tool, can be implemented with the greatest efficiency in single and small-scale production.

scholarly journals Can 3D Printing Bring Droplet Microfluidics to Every Lab?—A Systematic Review

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 339
Author(s):  
Nafisat Gyimah ◽  
Ott Scheler ◽  
Toomas Rang ◽  
Tamas Pardy
Keyword(s):  
Systematic Review ◽  
3D Printing ◽  
Microfluidic Chip ◽  
Performance Metrics ◽  
Droplet Microfluidics ◽  
Small Scale ◽  
Scale Production ◽  
Chemical Application ◽  
Chip Fabrication ◽  
3D Printed

In recent years, additive manufacturing has steadily gained attention in both research and industry. Applications range from prototyping to small-scale production, with 3D printing offering reduced logistics overheads, better design flexibility and ease of use compared with traditional fabrication methods. In addition, printer and material costs have also decreased rapidly. These advantages make 3D printing attractive for application in microfluidic chip fabrication. However, 3D printing microfluidics is still a new area. Is the technology mature enough to print complex microchannel geometries, such as droplet microfluidics? Can 3D-printed droplet microfluidic chips be used in biological or chemical applications? Is 3D printing mature enough to be used in every research lab? These are the questions we will seek answers to in our systematic review. We will analyze (1) the key performance metrics of 3D-printed droplet microfluidics and (2) existing biological or chemical application areas. In addition, we evaluate (3) the potential of large-scale application of 3D printing microfluidics. Finally, (4) we discuss how 3D printing and digital design automation could trivialize microfluidic chip fabrication in the long term. Based on our analysis, we can conclude that today, 3D printers could already be used in every research lab. Printing droplet microfluidics is also a possibility, albeit with some challenges discussed in this review.

scholarly journals The Tailored Traveller: Exploring digital vehicle data and large-scale FDM 3D printing to produce a luxury sleeping space

2021 ◽  
Author(s):  
◽  
William Rykers
Keyword(s):  
3D Printing ◽  
Automotive Industry ◽  
Large Scale ◽  
Theory And Practice ◽  
Digital Data ◽  
Design Solution ◽  
Small Scale ◽  
Research Through Design ◽  
Vehicle Data ◽  
3D Printed

<p>This research is focused towards the use of large-scale FDM 3D printing within the automotive industry, specifically to design a bespoke habitable sleeping environment attached to a Range Rover Sport. 3D printing has risen as a viable form of manufacturing in comparison with conventional methods. Allowing the designer to capitalise on digital data, enabling specific tailored designs to any vehicle model. This thesis asks the question “Can design use the properties of digital vehicle data in conjunction with large-scale FDM 3D printing to sustainably produce bespoke habitable sleeping environments for an automotive context?” Further to this, FDM 3D printing at a large-scale has so far not been explored extensively within the automotive industry.  FDM 3D printing is an emerging technology that possesses the ability to revolutionise the automotive industry, through expansion of functionality, customisation and aesthetic that is currently limited by traditional manufacturing methods. Presently, vehicle models are digitally mapped, creating an opportunity for customisation and automatic adaption through computer aided drawing (CAD). This thesis takes advantage of the digitisation of the automotive industry through 3D modelling and renders as a design and development tool.   This project explored a variety of methods to demonstrate a vision of a 3D printed habitable sleeping environment. The primary methodologies employed in this research project are Research for Design (RfD) and Research through Design (RtD). These methodologies work in conjunction to combine design theory and practice as a genuine method of inquiry. The combination of theory and design practice has ensued in the concepts being analysed, reflected and discussed according to a reflective analysis design approach. The design solution resulted in an innovative and luxury bespoke habitable sleeping space to be FDM 3D printed. Through the use of digitisation, the sleeping capsule was cohesively tailored to the unique design language of the Range Rover Sport. This thesis resulted in various final outputs including a 1:1 digital model, high quality renders, accompanied by small scale prototypes, photographs and sketch models.</p>

Additive manufacturing in the wood-furniture sector

2018 ◽  
Vol 29 (2) ◽  
pp. 350-371 ◽  
Author(s):  
Federica Murmura ◽  
Laura Bravi
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Small Scale ◽  
Computer Assisted ◽  
Scale Production ◽  
Content Type ◽  
Advantages And Disadvantages ◽  
Wood Furniture ◽  
Manufacturing Techniques ◽  
Manufacturing Technologies

Purpose In the world economy there is the emergence of advanced manufacturing technologies that are enabling more cost and resource-efficient small-scale production. Among them, additive manufacturing, commonly known as 3D printing, is leading companies to rethink where and how they conduct their manufacturing activities. The purpose of this paper is to focus in the Italian wood-furniture industry to understand if the companies in this sector are investing in additive manufacturing techniques, to remain competitive in their reference markets. The research also attempts to investigate the potential sustainable benefits and limitations to the implementation of 3D printing in this specific sector, considering the companies that have already implemented this technology. Design/methodology/approach Data were collected using a structured questionnaire survey performed on a sample of 234 Italian companies in this sector; 76 companies claimed to use 3D printing in their production system. The questionnaire was distributed via computer-assisted web interviewing and it consisted of four sections. Findings The research has highlighted how Italian 3D companies have a specific profile; they are companies aimed at innovating through the search for new products and product features, putting design and Made in Italy in the first place. They pay high attention to the image they communicate to the market and are highly oriented to the final customer, and to the satisfaction of its needs. Originality/value The study is attempting to expand a recent and unexplored research line on the possible advantages and disadvantages of the implementation of emerging production technologies such as 3D printing.

scholarly journals Renewing Materials: 3D Printing and Distributed Recycling Disrupting Samoa's Plastic Waste Stream

2021 ◽  
Author(s):  
◽  
Lionel Taito-Taaalii Matamua
Keyword(s):  
3D Printing ◽  
Participatory Design ◽  
Design Research ◽  
Low Cost ◽  
Field Work ◽  
Plastic Waste ◽  
Waste Stream ◽  
Small Scale ◽  
The Arts ◽  
3D Printed

<p>This research addresses the serious issue of plastic waste in the Pacific. Using Samoa as a case study, we hypothesise that distributed recycling combined with 3D printing offers an opportunity to re-purpose and add new value to this difficult waste stream. It is also an opportunity to engage diverse local communities in Samoa by combining notions of participatory design, maker-spaces and ‘wikis’ of parts with traditional Samoan social concepts such as ‘Fa’a Samoa’, or ‘the Samoan way’ and sense of community.  The project seeks to explore creative and innovative solutions to re-purposing plastic waste via a range of design research methods. Field work in Samoa has established the scope of the issue through interviews with different stakeholders such as Government, waste management businesses, the arts and crafts community and education. The field work has also helped identify potential product areas and collaborative partners. The different types of plastic in the waste stream have been identified and material experiments such as plastic shredding and filament extrusion are underway using low cost open source processing equipment to transform plastic waste into usable 3D printing filament. From this filament, potential 3D printed end products are explored through a hands-on researching by making process.  The experiments inform the design of workable, economically viable, socially empowering and sustainable scenarios for re-purposing and up-cycling plastic waste; printed in the form of useful and culturally meaningful 3D printed objects, artifacts and products.Applications range from creating greater awareness of the issue by way of tourism and the Samoan notion of ‘mea alofa’ or ‘gifting’, through to functional utensils and parts. It is an opportunity to expand Samoa’s traditional forms of craft into new self-sustaining communities, maker-spaces and small scale local industries. The outputs of the initial project are intended to provoke discussion and invite participation in the implementation of these different scenarios of production.</p>

Research of 3D Printing Modes of Feedstock for Metal Injection Molding

2020 ◽  
Vol 992 ◽  
pp. 461-466
Author(s):  
A.Yu. Korotchenko ◽  
D.E. Khilkov ◽  
M.V. Tverskoy ◽  
A.A. Khilkova
Keyword(s):  
3D Printing ◽  
Injection Molding ◽  
Metal Injection Molding ◽  
Small Scale ◽  
Print Quality ◽  
Scale Production ◽  
Fused Filament Fabrication ◽  
Factors Affecting ◽  
The Cost

In this work, to reduce the cost of production of parts using injection molding metal technology (MIM technology), it is proposed to use additive technologies (AT) for the manufacture of green parts. The use of AT allows us to abandon expensive molds and expand the field of use of the MIM of technology in single and small-scale production. For manufacture of green parts, the technology of manufacturing fused filament (Fused Filament Fabrication – FFF) is offered. The original composition of the metal powder mix (feedstock) and the filament manufacturing modes for 3D printing have been developed for the FFF technology. The cost of filament is much lower than its analogs. The factors affecting the print quality of green part are considered. All factors are divided into two groups depending on the possibility of their change during printing. The research of the influence of the coefficient filament supply on the geometry of green parts during 3D printing is presented.

scholarly journals Automated draping analysis of 3D printed flexible isogrid structures for textile applications

2021 ◽  
pp. 004051752110062
Author(s):  
Jordan Kalman ◽  
Kazem Fayazbakhsh ◽  
Danielle Martin
Keyword(s):  
Image Processing ◽  
3D Printing ◽  
Large Range ◽  
Thermoplastic Polyurethane ◽  
Small Scale ◽  
Fused Filament Fabrication ◽  
3D Print ◽  
3D Printed

Fused filament fabrication (FFF) 3D printing can be used for manufacturing flexible isogrid structures. This work presents a novel draping analysis of flexible 3D printed isogrids from thermoplastic polyurethane (TPU) using image processing. A small-scale multi-camera automated draping apparatus (ADA) is designed and used to characterize draping behavior of 3D printed isogrid structures based on draping coefficient (DC) and mode. Circular specimens are designed and 3D printed that accommodate up to eight additional weights on their perimeters to enhance draping. Five infill patterns, three infill percentages, and three loading cases are explored to evaluate their impact on specimens’ draping coefficient and mode, resulting in 45 tests. The range of DCs in this study is 21.9% to 91.5%, and a large range of draping modes is observed. For the lowest infill percentage, specimen mass is not the sole contributor to the DC values and the infill pattern has a significant impact for the three loading cases. Considering draping modes, the maximum number of convex and concave nodes observed for 25% infill specimens with added weights is three. The draping behavior characterization developed in this study can be followed to design and 3D print new flexible isogrids with textile applications.

3D printing the world: developing geophysical teaching materials and outreach packages

2020 ◽  
Author(s):  
Paula Koelemeijer ◽  
Jeff Winterbourne ◽  
Renaud Toussaint ◽  
Christophe Zaroli
Keyword(s):  
3D Printing ◽  
Plate Tectonics ◽  
Large Scale ◽  
Dynamic Processes ◽  
Scale Production ◽  
Dynamic Topography ◽  
Simple Method ◽  
Large Scale Production ◽  
3D Printed ◽  
Effective Models

&lt;p&gt;3D-printing techniques allow us to visualise geophysical concepts that are difficult to grasp, making them perfect for incorporation into teaching and outreach packages. Abstract models, often represented as 2D coloured maps, become more tactile when represented as 3D physical objects. In addition, new questions tend to be asked and different features noticed when handling such objects, while they also make outreach and education more inclusive to the visually impaired.&lt;/p&gt;&lt;p&gt;Some of our most effective models are simply exaggerated planetary topography in 3D, including Earth, Mars and the Moon. The resulting globes provide a powerful way to explain the importance of plate tectonics in shaping a planet and linking surface features to deeper dynamic processes. In addition, we have developed a simple method for portraying abstract global models by 3D printing globes of surface topography, representing the parameter of interest as additional, exaggerated long-wavelength topography. This workflow has been applied to models of dynamic topography, the geoid and seismic tomography. In analogy to Russian nesting dolls, the resulting &amp;#8220;seismic matryoshkas&amp;#8221; have multiple layers that can be removed by the audience to explore the structures present deep within our planet and learn about the ongoing dynamic processes.&lt;/p&gt;&lt;p&gt;While these 3D objects are easily printed on a cheap (&lt;300 GBP, 400USD) desktop 3D-printer, the printing times still prohibit large-scale production. To ensure that there is sufficient material in a teaching setting, we have therefore also developed complementary paper equivalents. By projecting the coloured maps onto a dodecahedron, we developed cut-out-and-fold models to be handed out in a classroom setting to complement the 3D printed globes used for demonstration purposes. Together with animations, suggested questions and instructor &amp;#8220;cheat-sheets&amp;#8221;, these materials form a complete teaching and outreach package that is both interactive and inclusive.&lt;/p&gt;

scholarly journals Renewing Materials: 3D Printing and Distributed Recycling Disrupting Samoa's Plastic Waste Stream

2021 ◽  
Author(s):  
◽  
Lionel Taito-Taaalii Matamua
Keyword(s):  
3D Printing ◽  
Participatory Design ◽  
Design Research ◽  
Low Cost ◽  
Field Work ◽  
Plastic Waste ◽  
Waste Stream ◽  
Small Scale ◽  
The Arts ◽  
3D Printed

<p>This research addresses the serious issue of plastic waste in the Pacific. Using Samoa as a case study, we hypothesise that distributed recycling combined with 3D printing offers an opportunity to re-purpose and add new value to this difficult waste stream. It is also an opportunity to engage diverse local communities in Samoa by combining notions of participatory design, maker-spaces and ‘wikis’ of parts with traditional Samoan social concepts such as ‘Fa’a Samoa’, or ‘the Samoan way’ and sense of community.  The project seeks to explore creative and innovative solutions to re-purposing plastic waste via a range of design research methods. Field work in Samoa has established the scope of the issue through interviews with different stakeholders such as Government, waste management businesses, the arts and crafts community and education. The field work has also helped identify potential product areas and collaborative partners. The different types of plastic in the waste stream have been identified and material experiments such as plastic shredding and filament extrusion are underway using low cost open source processing equipment to transform plastic waste into usable 3D printing filament. From this filament, potential 3D printed end products are explored through a hands-on researching by making process.  The experiments inform the design of workable, economically viable, socially empowering and sustainable scenarios for re-purposing and up-cycling plastic waste; printed in the form of useful and culturally meaningful 3D printed objects, artifacts and products.Applications range from creating greater awareness of the issue by way of tourism and the Samoan notion of ‘mea alofa’ or ‘gifting’, through to functional utensils and parts. It is an opportunity to expand Samoa’s traditional forms of craft into new self-sustaining communities, maker-spaces and small scale local industries. The outputs of the initial project are intended to provoke discussion and invite participation in the implementation of these different scenarios of production.</p>

scholarly journals PROTOTYPING OF MICROWAVE DEVICES WITH SPECIFIED ELECTRODYNAMIC CHARACTERISTICS USING ADDITIVE 3D PRINTING TECHNOLOGY

2019 ◽  
Vol 7 (1) ◽  
pp. 80-101
Author(s):  
S. V. Kharalgin ◽  
G. V. Kulikov ◽  
A. B. Kotelnikov ◽  
M. V. Snastin ◽  
E. M. Dobychina
Keyword(s):  
Electromagnetic Wave ◽  
3D Printing ◽  
Microwave Devices ◽  
Small Scale ◽  
Scale Production ◽  
Conductive Layer ◽  
Printing Technology ◽  
Adhesion Properties ◽  
Maximum Extent ◽  
3D Printing Technology

The technology of additive 3D printing is widely used in various branches of science and industry. The purpose of the research presented in the article is to evaluate and study the possibilities of 3D printing technology applied to the manufacture of microwave devices and to compare the characteristics of the devices obtained with the characteristics used in the electrodynamic model. Printing metal parts is an overly expensive process in small-scale production, both in terms of the cost of equipment and in relation to the materials used. In this work, parts for microwave devices were made of plastic with the aim of cheapening. Relatively cheap polymers used in 3D printing are dielectrics. Therefore, to limit the propagation of an electromagnetic wave in all directions it was necessary to create a conductive layer on the surface of printed models. The article: identifies the FFF print parameters that affect to the maximum extent the propagation of an electromagnetic wave; describes the process and problems encountered when printing and galvanizing parts; discusses the steps of modeling devices and measuring their parameters. The characteristics of microwave devices made by 3D printing technology were investigated. An assessment of the possibilities of manufacturing antennas and coaxial-waveguide transitions using this technology was carried out. To implement the conductive layer on the surface of the models, the method of galvanization was used. The adhesion properties of the obtained metallic coatings were investigated. The results of electromagnetic modeling are given. The parameters that affect to the maximum extent the quality of the implemented devices were determined. Laboratory measurements of the characteristics of produced devices were conducted. The simulation results of the examined devices are in good agreement with the experimental characteristics of the made models using 3D printing technology. A complete production cycle of microwave devices was carried out: design, simulation, sample production, and validation of characteristics. Prospects for the further development of the described technology include a variation of the types of plastics used as a substrate, the application of finishing decorative and functional coatings, an improvement in the adhesion properties of the applied copper layer with the substrate.

scholarly journals Methods and Principles of Product Design for Small-Scale Production Based on 3D Printing

2019 ◽  
Vol 1 (1) ◽  
pp. 789-798
Author(s):  
Jure Salobir ◽  
Jože Duhovnik ◽  
Jože Tavčar
Keyword(s):  
3D Printing ◽  
Development Process ◽  
Product Development Process ◽  
Small Scale ◽  
Systematic Research ◽  
Scale Production ◽  
Design Time ◽  
The Cost ◽  
Assembly Operations ◽  
Insight Into

AbstractTechnology of 3D printing is opening the possibility for small-scale production in quantities between ten and several hundred pieces. The technology of adding material enables the production of complex and integrated functional concepts in a single-pass process, which consequently potentially reduces the need for assembly operations. Design approaches and manufacturing processing are not mastered well because of a constant stream of new materials and manufacturing options. Well-designed products need to consider attributes of 3D printing as early as the conceptual phase. The cost of the product can be reduced with a systematic research and considering principles for small-scale production. In a cheaper, alternative production process the quality range of products is often lower. It has to be compensated with appropriate construction solutions which are less tolerance-sensitive. Therefore, in order to support the designer, to reduce the costs and design time of the product, a computer program was created to provide the user with an insight into the appropriate 3D printing technology. For simplifying the use, the program is also integrated into the product development process.

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