scholarly journals Foundation Piles—A New Feature for Concrete 3D Printers

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2545
Author(s):  
Marcin Hoffmann ◽  
Krzysztof Żarkiewicz ◽  
Adam Zieliński ◽  
Szymon Skibicki ◽  
Łukasz Marchewka
Keyword(s):  
3D Printing ◽  
Rapid Development ◽  
Construction Materials ◽  
Shallow Foundation ◽  
Soil Reinforcement ◽  
3D Printer ◽  
Permanent Formwork ◽  
3D Printers ◽  
New Feature ◽  
The Cost

Foundation piles that are made by concrete 3D printers constitute a new alternative way of founding buildings constructed using incremental technology. We are currently observing very rapid development of incremental technology for the construction industry. The systems that are used for 3D printing with the application of construction materials make it possible to form permanent formwork for strip foundations, construct load-bearing walls and partition walls, and prefabricate elements, such as stairs, lintels, and ceilings. 3D printing systems do not offer soil reinforcement by making piles. The paper presents the possibility of making concrete foundation piles in laboratory conditions using a concrete 3D printer. The paper shows the tools and procedure for pile pumping. An experiment for measuring pile bearing capacity is described and an example of a pile deployment model under a foundation is described. The results of the tests and analytical calculations have shown that the displacement piles demonstrate less settlement when compared to the analysed shallow foundation. The authors indicate that it is possible to replace the shallow foundation with a series of piles combined with a printed wall without locally widening it. This type of foundation can be used for the foundation of low-rise buildings, such as detached houses. Estimated calculations have shown that the possibility of making foundation piles by a 3D printer will reduce the cost of making foundations by shortening the time of execution of works and reducing the consumption of construction materials.

scholarly journals Implementing a 3D printing service in a biomedical library

2017 ◽  
Vol 105 (1) ◽  
Author(s):  
Verma Walker, MLIS
Keyword(s):  
Problem Solving ◽  
3D Printing ◽  
3D Modeling ◽  
Three Dimensional ◽  
National Institutes Of Health ◽  
3D Printer ◽  
Service Model ◽  
Steep Learning Curve ◽  
3D Printers ◽  
Creative Problem

Three-dimensional (3D) printing is opening new opportunities in biomedicine by enabling creative problem solving, faster prototyping of ideas, advances in tissue engineering, and customized patient solutions. The National Institutes of Health (NIH) Library purchased a Makerbot Replicator 2 3D printer to give scientists a chance to try out this technology. To launch the service, the library offered training, conducted a survey on service model preferences, and tracked usage and class attendance. 3D printing was very popular, with new lab equipment prototypes being the most common model type. Most survey respondents indicated they would use the service again and be willing to pay for models. There was high interest in training for 3D modeling, which has a steep learning curve. 3D printers also require significant care and repairs. NIH scientists are using 3D printing to improve their research, and it is opening new avenues for problem solving in labs. Several scientists found the 3D printer so helpful they bought one for their labs. Having a printer in a central and open location like a library can help scientists, doctors, and students learn how to use this technology in their work.

Employing 3D Printing to Fabricate Augmented Reality Headsets for Middle School STEM Education

2019 ◽  
pp. 241-261
Author(s):  
Daniel A. Tillman ◽  
Ross C. Teller ◽  
Paul E. Perez ◽  
Song A. An
Keyword(s):  
Middle School ◽  
Middle School Students ◽  
Augmented Reality ◽  
3D Printing ◽  
Learning Science ◽  
3D Printer ◽  
School Students ◽  
Mathematics Content Knowledge ◽  
3D Printers ◽  
And Mathematics

This chapter examines the theories, strategies, and techniques for employing 3D printing technologies to fabricate education-appropriate augmented reality (AR) headsets and provides a concrete example of an AR headset that the authors developed. The chapter begins by discussing theories and historically relevant events that provide a context for the chapter's narrative about use of 3D printers to support AR in education. Next, the chapter presents the strategies that were employed while developing and 3D fabricating a custom-designed AR headset that was intended for supporting middle school students learning science and mathematics content knowledge. Afterward, the chapter provides directions and resources for the reader describing how to build the presented AR headset design themselves by using a 3D printer and affordable electronic components, as well as information about how to join the Maker community and participate in the designing and producing of similar projects. Lastly, the chapter delivers a summarization of all findings discussed.

scholarly journals Strength of PLA Components Fabricated with Fused Deposition Technology Using a Desktop 3D Printer as a Function of Geometrical Parameters of the Process

2018 ◽  
Author(s):  
Vladimir Kuznetsov ◽  
Alexey Solonin ◽  
Oleg Urzhumtcev ◽  
Azamat Tavitov ◽  
Richard Schilling
Keyword(s):  
3D Printing ◽  
Significant Influence ◽  
Assessment Method ◽  
Geometrical Parameters ◽  
3D Printer ◽  
Three Point Bending ◽  
Geometric Process ◽  
Fused Deposition ◽  
3D Printers ◽  
Deposition Technology

The current paper is studying the influence of geometrical parameters of the FDM (FFF) 3D printing process on printed part strength for open source desktop 3D printers and the most popular material used for that purpose, i.e. PLA (polylactic acid). The study was conducted using a set of different nozzles (0.4, 0.6 and 0.8 mm) and a range of layer heights from the minimum to maximum physical limits of the machine. To assess print strength, a novel assessment method is proposed. A tubular sample is loaded in the weakest direction (across layers) in a three-point bending fixture. To explain the results obtained, a mesostructure evaluation through SEM scans of the samples were used. A significant influence of geometric process parameters was detected on sample mesostructure and, consequently, on sample strength.

Combinatorial Investigation of Mechanical Properties of Biomimicked Composites

2019 ◽  
Author(s):  
Seyed M. Allameh ◽  
Roger Miller ◽  
Abdullah Almuzaini
Keyword(s):  
3D Printing ◽  
Construction Industry ◽  
Construction Materials ◽  
3D Printer ◽  
In Situ Tests ◽  
Art Economics ◽  
Materials Research ◽  
3D Printed ◽  
Combinatorial Materials

Abstract This study presents the preliminary results of in-situ tests conducted on structural biomimicked composites built by 3D printing. Construction industry is looking seriously into 3D printed structures that can be incorporated into the conventional buildings. Further refinement of materials and processing will lead to the 3D printing of buildings in future. The advantages afforded by 3D printing are unrivaled, creating unprecedented opportunities to express art, economics, environmentally friendly designs, lightweight schemes, among many others. To determine the reliability and suitability of structural composites for use in construction, it is important to test these in shapes, and geometries that are appropriate to 3D printing. Combinatorial materials research allows the fabrication and in-situ testing of composites made by mix and match of various materials. This study focuses on the characterization of mechanical behavior of biomimicked composites fabricated by a 3D printer. To accomplish this, a meter-sized 3D printer was equipped with material dispensers as well as load sensors. Composites were made of various construction materials, adhesive, and reinforcement and subsequently tested by the same printer. The results are presented, and the implications of findings are discussed on their impact on the construction industry.

scholarly journals Design and Development of Plastic Filament Extruder for 3D Printing

2018 ◽  
Vol 10 (3) ◽  
pp. 23 ◽  
Author(s):  
Mamta H. Wankhade ◽  
Satish G. Bahaley
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Three Dimensional ◽  
3D Printer ◽  
3D Objects ◽  
Fused Deposition ◽  
Additive Manufacturing Technology ◽  
Mechanized Method ◽  
Dimensional Object ◽  
The Cost

<p>3D printing is a form of additive manufacturing technology where a three dimensional object is created by laying down successive layers of material. It is mechanized method whereby 3D objects are quickly made on a reasonably sized machine connected to a computer containing blueprints for the object. As 3D printing is growing fast and giving a boost to product development, the factories doing 3D printing need to continuously meet the printing requirements and maintain an adequate amount of inventory of the filament. As the manufactures have to buy these filaments from various vendors, the cost of 3D printing increases. To overcome the problem faced by the manufacturers, small workshop owners, the need of 3D filament making machine arises. This project focuses on designing and fabricating a portable fused deposition 3D printer filament making machine with cheap and easily available components to draw 1.75 mm diameter ABS filament.</p>

scholarly journals Design and implementation of 3D printer for Mechanical Engineering Courses

2021 ◽  
Vol 9 (3) ◽  
pp. 293-312
Author(s):  
Luiz Renato Rodrigues Carneiro ◽  
José Jean-Paul Zanlucchi de Souza Tavares
Keyword(s):  
3D Printing ◽  
Material Properties ◽  
Mechanical Engineering ◽  
Engineering Students ◽  
3D Printer ◽  
Sensors And Actuators ◽  
Engineering Knowledge ◽  
Design And Implementation ◽  
3D Printers ◽  
Printing Parameters

Nowadays 3D printing is a hot topic and this was specially observed during the COVID-19 pandemic. Hence, this project has the objective to present the design and implementation of a 3D printer, which fits the Mechanical Engineering Courses requisites. The founded solution follows the Delta architecture and it was called Delta MAPL. This paper will summarize all important definitions and knowledge to build a 3D printer such as, 3D printers technologies and architectures, expose the developed project involving mechanic and electric project, project cost, programming and slicer, calibration, printing parameters, and will also expose de results through implementation of the project, 3D printing tests, and also the documentation with all design parts, codes and printing parameters. Therefore, 3D printer is very useful and involving many fields of Mechanical Engineering knowledge, thus 3D printing develops not only knowledge in mechanic, electric, sensors and actuators and material properties, but also creativity and problem-solving that are so important for all engineering students.

scholarly journals Cheap, Versatile, and Turnkey Fabrication of Microfluidic Master Molds Using Consumer Grade LCD Stereolithography 3D Printing

2021 ◽  
Author(s):  
Vincent G. Colin ◽  
Théo A. Travers ◽  
Denis Gindre ◽  
Régis Barillé ◽  
Matthieu Loumaigne
Keyword(s):  
High Resolution ◽  
3D Printing ◽  
Cost Efficiency ◽  
Soft Lithography ◽  
Microfluidic Devices ◽  
Teaching Tool ◽  
3D Printer ◽  
Uv Led ◽  
Led Array ◽  
3D Printers

Abstract The recent development of 3D printers allowed a lot of limitations in the field of microfabrication to be circumvented. The ever-growing chase for smaller dimensions has come to an end in domains such as microfluidics, and the focus now shifted to a cost-efficiency challenge. In this paper, the use of a high-resolution stereolithography LCD 3D printer is investigated for fast and cheap production of microfluidic master molds. More precisely, we use the UV LED array and the LCD matrix of the printer as an illuminator and a programmable photomask for soft lithography. The achieved resolution of around 100µm is mainly limited by the pixel geometry of the LCD matrix. A tree-shape gradient mixer was fabricated using the presented method. It shows very good performances despite the presence of sidewall ripples due to the uneven pixel geometry of the LCD matrix. Given its sub-€1,000 cost, this method is a very good entry point for labs wishing to explore the potential of microfluidic devices in their experiments, as well as a teaching tool for introducing students to microfluidics.

scholarly journals 3D Printing: What Are the Hazards?

2018 ◽  
Vol 66 (3) ◽  
pp. 164-164 ◽  
Author(s):  
Susan A. Randolph
Keyword(s):  
3D Printing ◽  
Occupational Health ◽  
Health Professionals ◽  
Three Dimensional ◽  
3D Printer ◽  
3D Printers

As the popularity of three-dimensional (3D) printers increases, more research will be conducted to evaluate the benefits and risks of this technology. Occupational health professionals should stay abreast of new recommendations to protect workers from exposure to 3D printer emissions.

Recent Patents on Mechanical Structure of 3D Printer

2021 ◽  
Vol 16 ◽  
Author(s):  
Baocheng Xie ◽  
Shun Liu ◽  
Huaqiang Gao ◽  
Tingliang Zhang
Keyword(s):  
3D Printing ◽  
3D Printer ◽  
Machining Efficiency ◽  
Processing Efficiency ◽  
3D Print ◽  
Mechanical Structure ◽  
Existing Problems ◽  
The Future ◽  
3D Printers ◽  
Processing Accuracy

Background: 3D printing technology is widely applied in transportation, industrial equipment, medical, aerospace, and civil industry due to its characteristics of material saving, no model manufacturing, and machinability of complex parts. The mechanical structure of 3D printer mainly includes 3D printer head structure and working platform and plays a major role in the machining efficiency and processing accuracy of the 3D printer. Thus, increasingly attention has been paid to the current trends of the mechanical structure of 3D printers. Objective: To meet the increasing requirements of 3D printing processing efficiency and precision, the mechanical structure of 3D printers, such as 3D print head structure and working platform, needs to be carefully studied, and a feasible mechanical structure of 3D printers should be proposed. Methods: This paper studies various representative patent related to the mechanical structure of 3D printer, analyzes the mechanical structure of 3D printer, and studies the perfect mechanical structure of 3D printer. Results: Through summarizing a lot of patents about the mechanical structure of 3D printers, the main current existing problems such as platform jitter and machining error are summarized and analyzed, a new mechanical structure of 3D printers is proposed. Moreover, the development tendency of the mechanical structure of 3D printers in the future is discussed. Conclusion: The optimization of the mechanical structure of 3D printer is conducive to increasing the machining efficiency and processing accuracy in the 3D printing process. More relevant patents about working platform and 3D printer head will be invented in the future

Low-Cost 3D Printing of Controlled Porosity Ceramic Parts

2012 ◽  
Vol 6 (5) ◽  
pp. 618-626 ◽  
Author(s):  
Olaf Diegel ◽  
◽  
Andrew Withell ◽  
Deon de Beer ◽  
Johan Potgieter ◽  
...  
Keyword(s):  
3D Printing ◽  
Low Cost ◽  
Controlled Porosity ◽  
3D Printers ◽  
The Cost

This research was initiated to develop low cost powders that could be used on 3D printers. The paper describes experiments that were undertaken with different compositions of clay-based powders, and different print saturation settings. An unexpected sideeffect of printing ceramic parts was the ability to control the part porosity by varying the powder recipe and print parameters. The cost of clay-based powder was, depending on the specific ingredients used, around US$2.00/Kg.

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