Work Head for 3D Printing of Insulated Walls from One-Stage Polystyrene Concrete

2020 ◽  
Vol 992 ◽  
pp. 194-199
Author(s):  
V.V. Molodin ◽  
E.V. Vasenkov ◽  
P.L. Timin
Keyword(s):  
Thermal Treatment ◽  
3D Printing ◽  
Uniform Distribution ◽  
Construction Industry ◽  
Thermal Characteristics ◽  
Electric Heating ◽  
Initial Mixture ◽  
3D Printer ◽  
Layer By Layer ◽  
One Stage

The 3D printer technology of insulating walls, using the technology of one-stage polystyrene concrete laid with electric heating of the initial mixture is described. This technology test’s results, confirming the possibility of layer-by-layer molding of the insulated wall with the bead polystyrene’s filler mixture was subjected to electro thermal treatment directly in the working head of the 3D printer were carried out. Polystyrene swells, changing the thermal characteristics of the material and, at the same time, compacting the mixture, and the 3D printer forms a quick-hardening working layer of a wall, being built from the hot mixture that is losing its mobility. The technological features of molding a wall of one-stage polystyrene concrete by a 3D printer, the uniform distribution of polystyrene granules in it and its strength were investigated. The possibility of the proposed technology using in the construction industry was proved.

scholarly journals The Influence of Different Slicer Software on 3d Printing Products Accuracy and Surface Roughness

2021 ◽  
Vol 12 (2) ◽  
pp. 371-380
Author(s):  
Sally Cahyati ◽  
◽  
Haris Risqy Aziz
Keyword(s):  
Surface Roughness ◽  
Additive Manufacturing ◽  
3D Printing ◽  
3D Model ◽  
High Surface ◽  
3D Printer ◽  
Layer By Layer ◽  
Additive Manufacturing Technology ◽  
Printing Machine

Rapid Prototyping (RP) is a manufacturing process that produces a 3D model CAD to be a real product rapidly by using additive manufacturing technology. In this case, the product will print layer by layer uses a 3D printer machine. The 3D printer requires slicer software to convert CAD data into data that a 3D printer machine can read. Research is done to analyze the effect of three kinds of slicer software on 3D printing objects on the accuracy and surface roughness of the product. The 3D model CAD is sliced using three different slicer software, namely Ideamaker, Repetier Host, and Cura. The slice model result from each slicer will be printed on a 3D printer machine with the same process parameters to be compared. Then the product's dimensional and surface roughness will be measured to determine the effect of each slicer on product quality. The best quality of the product reflected the most suitable slicer software for the 3D printing machine that used. The best results achieved by Cura slicer because it has resulted in small dimensional deviations (max 0,0308±0,0079) and stabile high surface roughness of the product (max 1,585+059).

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.

Mortar for 3D Printing Based on Gypsum Binders

2021 ◽  
Vol 1037 ◽  
pp. 26-31
Author(s):  
Ekaterina Potapova ◽  
Tatiana Guseva ◽  
Kirill Shchelchkov ◽  
Hans Bertram Fischer
Keyword(s):  
3D Printing ◽  
Structural Design ◽  
High Speed ◽  
High Viscosity ◽  
Solid Model ◽  
3D Printer ◽  
Layer By Layer ◽  
Adhesive Properties ◽  
Binding Material ◽  
Complex Shapes

3D construction printer - is an innovative construction approach with which building elements can be constructed without the use of formwork and you to get products of various complex shapes with minimal time and material costs. Binder 3D printing technology results in a cheap and high-speed construction method that allows greater freedom in both architectural and structural design of concrete. The principle of operation of a 3D printer is based on the principle of gradual (layer-by-layer) creation of a solid model, which is, as it were, "grown" from a certain binding material. The working mixture must have thixotropic and adhesive properties, it must be workable by the printer and at the same time not spread under the influence of subsequent layers. Therefore, it is important to select the composition of the composition of the working mixture. This paper presents the results of a study on the development of the composition of a working mixture based on a gypsum-cement-pozzolanic binder. The developed composition of the gypsum-cement-pozzolanic binder with a complex of modifying additives is characterized by low spreadability, high viscosity and is easy to lay.

Design for the Controller of Desktop 3D Printer

2014 ◽  
Vol 672-674 ◽  
pp. 894-897
Author(s):  
Ruo Dong Huang ◽  
Xin Wang ◽  
Yi Hui Zheng ◽  
Li Xue Li ◽  
Xi Kui Sheng ◽  
...  
Keyword(s):  
3D Printing ◽  
Software Design ◽  
Stepper Motor ◽  
3D Printer ◽  
Layer By Layer ◽  
The Core ◽  
Whole Process ◽  
Materials Used ◽  
Avr Microcontroller ◽  
Rapid Prototyping Manufacturing

3D printing, is a kind of rapid prototyping manufacturing, fabricating expected objects by way of cumulative constructed layer by layer, based on digital model files and powdered materials used. In this paper, the controller of desktop 3D printer is designed and carried out, both from the hardware and software part. For hardware design, a 32-bit ARM core microcontroller, STM32F103VB is selected as the core, supplemented by stepper motor driver chips, thermocouple digital converters and other devices, which build a desktop 3D printer controller panel. For software design, referred to open-source design being based on the AVR microcontroller, the whole process of 3D printing is accomplished by programming the ARM core microcontroller.

scholarly journals Analysis of Mechanical Properties of Polylactic Acid Using a New 3D Printer Nozzle

2018 ◽  
Vol 15 (2) ◽  
pp. 666-675
Author(s):  
Nor Aiman Sukindar ◽  
Mohd Khairol Anuar Mohd Ariffin ◽  
B. T. Hang Tuah Baharudin ◽  
Che Nor Aiza Jaafar ◽  
Mohd Idris Shah Ismail
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Polylactic Acid ◽  
Low Cost ◽  
Three Dimensional ◽  
Extrusion Process ◽  
3D Printer ◽  
Layer By Layer ◽  
The Stability ◽  
Stability And Accuracy

Additive manufacturing, also known as three-dimensional (3D) printing, is the process of developing 3D products in a layer-by-layer manner using filament as a material feedstock to create a solid structure. Owing to its unique properties and advantages, which include biodegradability and printing speed, polylactic acid is one of the most common 3D printing extrusion materials. While a considerable attention has been paid to the manipulation of process parameters in order to achieve desired finished product quality, to date less research has been performed on improving the hardware systems of low-cost 3D printers. This study focuses on fabricating the 3D printer nozzle parts, with an emphasis on die angle, nozzle diameter, liquefier design, and insulator composition. Modifying the properties of these components from the conventional nozzle, it is possible to optimize the stability and accuracy of the extrusion process, leading to better-quality printed products. To demonstrate the capability of the new nozzle, its tensile and compressive strengths were compared to those of a conventional nozzle. The obtained results proved that the proposed augmentations to the nozzle system lead to finished products with improved mechanical properties.

Optimizing Concrete Mix Design for Application in 3D Printing Technology for the Construction Industry

2017 ◽  
Vol 263 ◽  
pp. 24-29 ◽  
Author(s):  
Refilwe Lediga ◽  
Deon Kruger
Keyword(s):  
3D Printing ◽  
Construction Industry ◽  
Three Dimensions ◽  
Mix Design ◽  
Layer By Layer ◽  
Construction Methods ◽  
Concrete Mix Design ◽  
Concrete Mix ◽  
Traditional Construction ◽  
Concrete Pump

This paper presents an overview of an investigation into the application of additive manufacturing commonly known as 3D printing specifically within the construction industry. 3D concrete printing is a new and innovative way of construction and can be used for the manufacturing of micro to macro high precision construction components. If correctly designed and used, this method has various advantages over traditional construction methods as it creates opportunities to reduce time and cost. A crucial component for success is an optimized concrete or mortar mix to ensure proper feed, placement and hardening during the 3D printing process. A 3D concrete printer uses a chemically altered concrete or mortar mix, which is pumped through a concrete extruder/nozzle that is carefully controlled in three dimensions. This extruder is controlled by a computerised gantry system, and prints components and structures layer by layer. The key components in such a system are therefore a concrete pump, an extruder, an optimized printable concrete mix and a computerised gantry system. The paper will present an investigation into the criteria for an optimum concrete mix design to be used in a 3D concrete printing machine.

scholarly journals Metode PID untuk pengkondisian suhu pada bedplate di pencetak 3D 2x2x2 meter

JURNAL ELTEK ◽  
2021 ◽  
Vol 19 (1) ◽  
pp. 35
Author(s):  
Budhy Setiawan ◽  
Purusa Tama ◽  
Delila Cahya
Keyword(s):  
3D Printing ◽  
High Density Polyethylene ◽  
Thermal Characteristics ◽  
High Density ◽  
3D Printer ◽  
Main Function ◽  
Print Material ◽  
Long Time ◽  
3D Printers ◽  
Made In

ABSTRAK 3D Printer mulai digunakan di dalam dunia industri Indonesia dalam beberapa tahun terakhir, karena dengan meggunakan 3D printer pembuatan prototype yang biasanya memakan waktu cukup lama dapat dibuat dalam waktu yang lebih singkat. Pada pembuatan 3D Printer Bedplate bisa dibilang salah satu bagian terpenting dari 3D printer, karena tidak akan bisa mencetak dengan baik tanpa itu. Fungsi utama Bedplate sendiri yaitu sebagai tempat alas cetak selama proses mencetak berlangsung. Terdapat banyak variasi Bedplate dengan menggunakan permukaan yang berbeda, karakteristik termal yang berbeda dan ukuran yang berbeda. Bedplate yang dijual secara universal memiliki ukuran kurang dari 50 cm sehingga jika ingin mencetak obyek dengan ukuran lebih dari 50 cm diperlukan bedplate dengan ukuran lebih dari 50 cm. Pada penelitian ini untuk mencetak obyek menggunakan Bedplate dengan ukuran 1 x 2 meter yang terbuat dari bahan kaca dan untuk filament menggunakan bahan biji plastik high density polyethylene (HDPE). Filament HDPE cenderung memiliki daya rekat yang buruk pada permukaan. Pada bahan cetak 3D Printer menggunakan Bahan high density polyethylene (HDPE) diperlukan suhu Konstan 65°C secara merata pada Bedplate agar bahan cetak dapat menempel dengan baik pada Bedplate.Untuk menghasilkan hasil cetakan yang baik, suhu Bedplate harus dikontrol dengan tepat dengan menggunakan Metode Proportional Intergral Deferential (PID), suhu terbaik Bedplate untuk Untuk proses penempelan bahan high density polyethylene HDPE adalah sebesar 65°C ABSTRACT 3D Printer began to be used in the indonesian industrial world in recent years, because by using 3D printers that usually take a long time can be made in a shorter time. In the manufacture of 3D Printer Bedplate is arguably one of the most important parts of 3D printers, because it would not be able to print well without it. The main function of Bedplate itself is as a printing base during the printing process. There are many variations of Bedplate using different surfaces, different thermal characteristics and different sizes. Bedplate sold universally has a size of less than 50 cm so if you want to print objects with a size of more than 50 cm is required bedplate with a size of more than 50 cm. In this study to print objects using Bedplate with a size of 1 x 2 meters made of glass and for filament using high density polyethylene (HDPE) plastic seed material. HDPE filaments tend to have poor adhesence on the surface. In 3D printing materials Printers use high density polyethylene (HDPE) materials required Constant temperature of 65 °C evenly on the Bedplate so that the print material can stick well to the Bedplate.To produce a good print result, the temperature of Bedplate must be controlled precisely by using the Proportional Intergral Deferential Method (PID), the best temperature bedplate for the process of attaching materials High density polyethylene HDPE material is 65 °C.

Results of studying the dimensional accuracy of the bases of complete removable prostheses made using 3D printing and traditional technologies

2020 ◽  
pp. 34-39
Author(s):  
Vokulova Yu.A. Vokulova ◽  
E.N. Zhulev
Keyword(s):  
3D Printing ◽  
Traditional Method ◽  
Laser Scanning ◽  
Laser Scanner ◽  
Digital Technologies ◽  
Dimensional Accuracy ◽  
3D Printer ◽  
Significance Level ◽  
Average Value ◽  
The Difference

This article presents the results of studying the dimensional accuracy of the bases of complete removable prostheses made using a 3D printer and the traditional method. Bases of complete removable prostheses were made using an intraoral laser scanner iTero Cadent (USA) and a 3D printer Asiga Max UV (Australia). To study the dimensional accuracy of the bases of complete removable prostheses, we used the DentalCAD 2.2 Valletta software. The Nonparametric Wilcoxon W-test was used for statistical analysis of the obtained data. We found that the average value of the difference with the standard for bases made using digital technologies is 0.08744±0.0484 mm. The average value of the difference with the standard for bases made by the traditional method is 0.5654±0.1611 mm. Based on these data, we concluded that the bases of complete removable prostheses made using modern digital technologies (intraoral laser scanning and 3D printer) have a higher dimensional accuracy compared to the bases of complete removable prostheses made using the traditional method with a significance level of p<0.05 (Wilcoxon's W-test=0, p=0.031). Keywords: digital technologies in dentistry, digital impressions, intraoral scanner, 3D printing, ExoCAD, complete removable dentures.

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.

Sign in / Sign up

Export Citation Format

Share Document