scholarly journals Vibration Suppression of a Fast Filament Fabrication 3d Printer via Resonance Compensation

2021 ◽  
Vol 9 (12) ◽  
pp. 15-17
Author(s):  
Patel Mann B
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
High Speed ◽  
Manufacturing Systems ◽  
Vibration Suppression ◽  
System Development ◽  
3D Printer ◽  
Engineering Mathematics ◽  
Mathematical System ◽  
3D Printers

Abstract: Additive manufacturing systems especially 3d printers are made by rigid links which provide sufficient stiffness to give motion to 3d printing head system which are moving at very high speed &acceleration. It has been found out that high-speed manipulators generate vibration problem and 3dprinting head is one of them which encounter significant vibration at high speed and acceleration. Therefore, evolution in mathematical control system is necessary for effective vibration suppression and to allow fast motion of 3d printing head at high speed and acceleration. In this paper we develop experiment where we measure the resonance frequency of our bed swinging 3d printer and with graph we optimized it with mathematical system which allows printer to run 140% faster speed and over 600% higher acceleration with same quality and precision. Keyword: 1. Additive Manufacturing, 2. Complex system development, 3. Mechatronics, 4. Robotics, 5. Physics. 6. Advanced engineering mathematics 7. High speed manipulators.

scholarly journals The Use of 3D Printing in Comparative Research and Teaching

2020 ◽  
Vol 33 ◽  
Author(s):  
Hitesh D. Vora ◽  
Charles I. Abramson
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Comparative Research ◽  
Student Interest ◽  
3D Printer ◽  
Design Issues ◽  
Apparatus Design ◽  
The Past ◽  
Research And Teaching ◽  
3D Printers

The past decade has witnessed remarkable advancements in 3D printing or more scientifically called as additive manufacturing. Surprisingly, few comparative psychologists have taken advantage of 3D printing in the design of apparatus. Our paper discusses the advantages of 3D printing, the type of 3D printers (printing technologies) we have found most useful for various applications, offers practical suggestions on how engineers and comparative psychologists can communicate with each other on apparatus design issues and discuss how apparatus design with 3D printing can increase student interest in the STEM field. We first document that comparative/experimental psychologists seldom use 3D printer technology and then offer recommendations on how to increase the use of such technology in the behavioral sciences.

scholarly journals Can 3-D Printing Go Green?

2016 ◽  
Vol 138 (10) ◽  
pp. 42-47 ◽  
Author(s):  
R.P. Siegel
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Supply Chains ◽  
3D Printer ◽  
Vinyl Ethers ◽  
Fuel Use ◽  
Advantages And Disadvantages ◽  
Solid Objects ◽  
3D Printers

This article explores various advantages and disadvantages of 3D printing. As 3D printers have become smaller, less expensive, and easier to use, they have become increasingly popular. Additive manufacturing could make manufacturing more sustainable because it creates far less waste than traditional subtractive methods and because making products locally would shorten supply chains, reducing fuel use and carbon pollution from shipping. The researchers believe that 3D printing could ‘accelerate consumerism of nonbiodegradable throwaway plastic objects.’ Students have found that 3D printers use six common resin types: acrylates, thiols, alkenes, vinyl ethers, epoxides, and oxetanes. Acrylates, which the Ember printer uses, are the most common because they work well in a 3D printer and are considered safest for creating solid objects from liquids.

scholarly journals Efficient 3D printing via photooxidation of ketocoumarin based photopolymerization

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiaoyu Zhao ◽  
Ye Zhao ◽  
Ming-De Li ◽  
Zhong’an Li ◽  
Haiyan Peng ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Visible Light ◽  
Light Exposure ◽  
Three Dimensional ◽  
3D Printer ◽  
Light Penetration ◽  
Viable Solution

AbstractPhotopolymerization-based three-dimensional (3D) printing can enable customized manufacturing that is difficult to achieve through other traditional means. Nevertheless, it remains challenging to achieve efficient 3D printing due to the compromise between print speed and resolution. Herein, we report an efficient 3D printing approach based on the photooxidation of ketocoumarin that functions as the photosensitizer during photopolymerization, which can simultaneously deliver high print speed (5.1 cm h−1) and high print resolution (23 μm) on a common 3D printer. Mechanistically, the initiating radical and deethylated ketocoumarin are both generated upon visible light exposure, with the former giving rise to rapid photopolymerization and high print speed while the latter ensuring high print resolution by confining the light penetration. By comparison, the printed feature is hard to identify when the ketocoumarin encounters photoreduction due to the increased lateral photopolymerization. The proposed approach here provides a viable solution towards efficient additive manufacturing by controlling the photoreaction of photosensitizers during photopolymerization.

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.

History of Additive Manufacturing

2017 ◽  
pp. 1-24 ◽  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Large Scale ◽  
Selective Laser Sintering ◽  
3D Printer ◽  
3D Objects ◽  
History Of ◽  
Pros And Cons ◽  
3D Printed ◽  
The Common

History of additive manufacturing started in the 1980s in Japan. Stereolithography was invented first in 1983. After that tens of other techniques were invented under the common name 3D printing. When stereolithography was invented rapid prototyping did not exists. Tree years later new technique was invented: selective laser sintering (SLS). First commercial SLS was in 1990. At the end of 20t century, first bio-printer was developed. Using bio materials, first kidney was 3D printed. Ten years later, first 3D Printer in the kit was launched to the market. Today we have large scale printers that printed large 3D objects such are cars. 3D printing will be used for printing everything everywhere. List of pros and cons questions rising every day.

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.

Identifying the Cyber-Incidents in Additive Manufacturing Systems via Multimedia Signals

2020 ◽  
Author(s):  
Wei Yang ◽  
Jialei Chen ◽  
Kamran Paynabar ◽  
Chuck Zhang
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Systems ◽  
Manufacturing Technology ◽  
Reconstruction Method ◽  
3D Printer ◽  
Online Detection ◽  
Audio Signals ◽  
Detection Mechanism ◽  
Video Signals

Abstract Additive Manufacturing (AM) is an emerging manufacturing technology that plays a growing role in both industrial and consumer settings. However, security concerns of the AM have been raised among researchers. In this paper, we present an online detection mechanism for the malicious attempts on AM system, which taps into both audios and videos collected during the actual printing process. For audio signals, we propose to monitor the characteristics or patterns in the spectrogram via the Wasserstain metric. For video signals, we present a path reconstruction method which effectively monitors the motion of the printer extruder. We then show the effectiveness of our methods in a case study using Ender 3D printer, where the cyber-incidence of modifying the internal fill density can be easily identified in an online manner.

Global Diffusion of Innovation during the Fourth Industrial Revolution: The Case of Additive Manufacturing or 3D Printing

2020 ◽  
Vol 17 (01) ◽  
pp. 2050005 ◽  
Author(s):  
Harm-Jan Steenhuis ◽  
Xin Fang ◽  
Tolga Ulusemre
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Diffusion Of Innovation ◽  
Industrial Revolution ◽  
Expert Knowledge ◽  
Early Stage ◽  
High Technology ◽  
Fourth Industrial Revolution ◽  
Advanced Economies ◽  
3D Printers

Additive manufacturing can be considered an innovative and high-technology and one of its characteristics is that it has limited dependency on the location. The purpose of this study is to examine this aspect by investigation how additive manufacturing is spreading globally. The focus is on established manufacturers of industrial additive manufacturing machines. It was found that the early-stage diffusion of this technology is primarily in advanced economies. Furthermore, many of the currently established companies that manufacture industrial 3D printers come from already existing companies that expanded into AM or that led to spin-off companies. The complexity of AM which requires expert knowledge across a range of fields may be the key reason for this finding. Recommendations for further research are provided.

FDM 3D Printing Technology in Manufacturing Composite Elements

2013 ◽  
Vol 58 (4) ◽  
pp. 1415-1418 ◽  
Author(s):  
P. Dudek
Keyword(s):  
Composite Materials ◽  
3D Printing ◽  
Manufacturing Systems ◽  
Fused Deposition Modelling ◽  
3D Printer ◽  
New Materials ◽  
Fused Deposition ◽  
Material Deposition ◽  
Feedstock Production ◽  
And Robotics

Abstract In recent years, FDM technology (Fused Deposition Modelling) has become one of the most widely-used rapid prototyping methods for various applications. This method is based on fused fibre material deposition on a drop-down platform, which offers the opportunity to design and introduce new materials, including composites. The material most commonly used in FDM is ABS, followed by PC, PLA, PPSF, ULTEM9085 and mixtures thereof. Recently, work has been done on the possibility of applying ABS blends: steel powders, aluminium, or even wood ash. Unfortunately, most modern commercial systems are closed, preventing the use of any materials other than those of the manufacturer. For this reason, the Department of Manufacturing Systems (KSW) of AGH University of Science and Technology, Faculty of Mechanical Engineering And Robotics purchased a 3D printer with feeding material from trays reel, which allows for the use of other materials. In addition, a feedstock production system for the 3D printer has been developed and work has started on the creation of new composite materials utilising ceramics.

Sign in / Sign up

Export Citation Format

Share Document