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).

scholarly journals Surface Roughness Investigation of Poly-Jet 3D Printing

Mathematics ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1758
Author(s):  
Nectarios Vidakis ◽  
Markos Petousis ◽  
Nikolaos Vaxevanidis ◽  
John Kechagias
Keyword(s):  
Surface Roughness ◽  
3D Printing ◽  
Surface Quality ◽  
Back Propagation ◽  
Physical Models ◽  
Layer By Layer ◽  
Linear Regression Models ◽  
Feed Forward Back Propagation ◽  
The Impact

An experimental investigation of the surface quality of the Poly-Jet 3D printing (PJ-3DP) process is presented. PJ-3DP is an additive manufacturing process, which uses jetted photopolymer droplets, which are immediately cured with ultraviolet lamps, to build physical models, layer-by-layer. This method is fast and accurate due to the mechanism it uses for the deposition of layers as well as the 16 microns of layer thickness used. Τo characterize the surface quality of PJ-3DP printed parts, an experiment was designed and the results were analyzed to identify the impact of the deposition angle and blade mechanism motion onto the surface roughness. First, linear regression models were extracted for the prediction of surface quality parameters, such as the average surface roughness (Ra) and the total height of the profile (Rt) in the X and Y directions. Then, a Feed Forward Back Propagation Neural Network (FFBP-NN) was proposed for increasing the prediction performance of the surface roughness parameters Ra and Rt. These two models were compared with the reported ones in the literature; it was revealed that both performed better, leading to more accurate surface roughness predictions, whilst the NN model resulted in the best predictions, in particular for the Ra parameter.

Modelling of Cusp Geometry in Additive Manufacturing Parts Using a Piece-Wise Polynomial

2015 ◽  
Author(s):  
Farzaneh Kaji ◽  
Ahmad Barari
Keyword(s):  
Surface Roughness ◽  
Additive Manufacturing ◽  
Manufacturing Process ◽  
High Surface ◽  
3D Models ◽  
Critical Issue ◽  
Layer By Layer ◽  
Layer Manufacturing ◽  
Surface Angle ◽  
Good Agreement

The final dimensional and geometric inaccuracies, and the resulting high surface roughness of the products have been the major problems in employing Additive Manufacturing (AM) technologies. Most of commonly used Additive manufacturing (AM) technologies are developed based on a layer-based manufacturing process to fabricate 3D models. The main critical issue in AM which reduces the surface integrity of the final products is the stair case error which happens due to layer by layer manufacturing process. A new method is presented to model the surface roughness of FDM parts based on considering a new geometry for the cusps. Variety of observations were conducted to model the exact geometry of the cusp. Considering that cusp geometry affects the surface roughness directly, the new geometry was used to predict the surface roughness distribution as a function of layer thickness and surface angle of the final FDM products. The model was validated by designing a set of experiments using 3D measurements of the surface roughness under high resolution surface topography device and the predicted model was in a good agreement with the experimental results.

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>

Recent Designs on Resin Containers of Photocuring 3D Printer

2020 ◽  
Vol 13 ◽  
Author(s):  
Baocheng Xie ◽  
Xuhui Ji
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Temperature Control ◽  
Complex Object ◽  
3D Printer ◽  
Curing Process ◽  
Core Component ◽  
Additive Manufacturing Technology ◽  
Similarities And Differences ◽  
Selection Of

Background: Photocuring 3D printing is a highly efficient additive manufacturing technology for machining complex object geometries. Resin container, a core component of photocuring 3D printer, plays a significant role in solving the problems about resin supply, temperature control, peeling method and membrane pressure during the curing process. Thus, the resin container has been paid more and more attention to optimize the curing process Objective: To offer some new designs of resin container which contribute to solve problems about resin supply, temperature control, peeling method and membrane pressure. Provide the reader with a new idea that the function of resin containers cannot be ignored during 3d printing. Moreover, stimulate the reader's thoughts about how can designs of resin containers be further improved Methods: This paper sketches out the strengths and weaknesses of these designs of resin containers with a more critical eye. And show their similarities and differences in a more concise form. Results: The strengths and weaknesses of these designs of resin containers in photocuring 3D printing are summarized. There is no doubt that a suitable resin container contributes to solve the problems about resin supply, temperature control, peeling method and membrane pressure. It helps to stimulate the reader's thoughts on the selection of resin containers for printing optimization Conclusion: Researchers should pay more attention to the new designs of resin containers which are easy to be ignored but have great significance. Some new resin containers will be invented to solve problems about resin supply, temperature control, peeling method and membrane pressure during the curing process

scholarly journals Evaluation and optimisation of a slurry-based layer casting process in additive manufacturing using multiphase simulations and spatial reconstruction

2021 ◽  
Author(s):  
P. Erhard ◽  
A. Seidel ◽  
J. Vogt ◽  
W. Volk ◽  
D. Günther
Keyword(s):  
Surface Roughness ◽  
3D Printing ◽  
Fine Particles ◽  
High Surface ◽  
Casting Process ◽  
Spatial Reconstruction ◽  
Novel Method ◽  
Slurry Layer ◽  
High Level

AbstractSlurry-based 3D printing allows ceramic green bodies to be fabricated at high packing densities. In contrast to powder-based binder jetting, full densification of printed parts can be achieved in a subsequent sintering step as fine particles dispersed in a suspension are cast and compacted. Slurry-based 3D printing is thus expected to overcome the application limits of the powder-based alternative in metal casting in terms of unfavorable properties like high surface roughness, low density and low mechanical strength. To ensure stress-free drying and therefore high qualities of the compounds made in layers, it is crucial to fabricate single layers with a high level of homogeneity. This paper presents a CFD model based on the open-source simulation environment OpenFOAM to predict the resulting homogeneity of a cast slurry layer with defined parameter sets or coater geometries using the Volume-Of-Fluid method. Moreover, a novel method of spatial reconstruction is proposed to evaluate the surface quality of layers on a minimised computional demand. By comparing the results of the simulation with the real macroscopic behaviour determined in experiments, the approach is found to be a useful tool for suggesting suitable parameters and coater geometries for processing slurries. A precise reconstruction of the outline of the coating area with different process parameters and an approximate prediction of the effect on surface roughness was achieved.

scholarly journals DESIGN AND FABRICATION OF 3D PRINTER

2021 ◽  
Vol 6 (3) ◽  
Author(s):  
Ativya Gupta ◽  
Garima Gupta ◽  
Harshit Srivastava ◽  
Er. Sunil Kumar Yadav
Keyword(s):  
3D Model ◽  
Travel Speed ◽  
Nozzle Diameter ◽  
3D Printer ◽  
Layer By Layer ◽  
Machining Time ◽  
Layer Height ◽  
Fused Deposition ◽  
2D Sketch

The project entitled Design and Fabrication of a 3D Printer defines about the different types of D printer being used in the market and the final analysis of the various input and output parameters that has been taken into consideration. It also describes about the present application and the future scope of the 3D Printer. A 2D-sketch of butterfly was been prepared in the Solidworks software which was further extruded into its 3D-model. After converting the 2D sketch into 3D model the file was saved and transferred in the STL (Standard Tessellation Language) file format for the final layer by layer manufacturing in the 3D printer. Fused Deposition Modelling (FDM) type of 3D printer is been used in the project which does the modelling by depositing the filament through heated nozzle layer by layer on the heated plate to form the final object. Thus taking the input parameter as the Nozzle diameter, travel speed and layer height we considered the output parameter as Marching time and did our analysis using Design OF Experiments (DOE). The results after the analysis were like the more nozzle diameter we will use the less machining time will be required with increased layer height and travel speed though with more nozzle diameter the quality of the product would vary a bit but it can be accepted if not much précised or complex design is required. Similarly, the less diameter would require more machining time with less layer height and less travel speed, though the quality of the product will be excellent normally also and for more complex and intricate designs as well.

The Effects of 3D Printing Parameters and Surface Roughness on Convective Heat Transfer Performance

2019 ◽  
Author(s):  
Lucas Pereira ◽  
Todd Letcher ◽  
Gregory J. Michna
Keyword(s):  
Heat Transfer ◽  
Surface Roughness ◽  
Reynolds Number ◽  
Heat Transfer Coefficient ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Additive Manufacturing Technology ◽  
Printing Parameters

Abstract Additive manufacturing technology and applications have quickly expanded into many industries over the last several years. Improvements in resolution, strength, and material options have helped propel further growth of the industry. This study focuses on an additive manufacturing technology called fused filament fabrication (FFF). FFF involves the extrusion and layer-by-layer deposition of a molten thermoplastic material to create the desired part. One potential new application of FFF is the manufacture of heat exchangers and heat sinks. This study focuses on developing baseline experimental data related to convective heat transfer coefficients over surfaces of commonly used polymers in FFF 3d printing while varying printing parameters. Samples with layer heights (LH) of 0.1 mm, 0.2 mm and 0.3 mm were printed. As the layer height increases, the surface roughness also increased. Sample 1 of LH = 0.1 mm had a roughness of 9.72 μm and at a Reynolds number of 13,200 had a heat transfer coefficient of 72.2 W/m2-K and sample 1 of LH = 0.3 mm had a roughness of 28.83 μm and at a Reynolds number of 13,600 had a heat transfer coefficient of 84.6 W/m2-K.

scholarly journals The advantages of combining 3D printing with turning process. Case study

2021 ◽  
Vol 343 ◽  
pp. 02010
Author(s):  
Dan Claudiu Negrău ◽  
Gavril Grebenisan ◽  
Ion Cosmin Gherghea ◽  
Daniel Anton
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Lead Time ◽  
Dimensional Accuracy ◽  
3D Printer ◽  
Technological Properties ◽  
Turning Process ◽  
Finishing Process

The paper presents a case study which the additive manufacturing technology is combined with finishing process by cutting operations (turning) for manufacturing a part. The part was manufactured through additive manufacturing, using a 3D printer and the and the finishing process is performed by a lathe, resulting in technological properties and the corresponding dimensional accuracy. The research paper also contains the analysis of the roughness and other properties of the material from which the final part will be made. The manufactured part will be used as a support for the blades of a fan during the assembly process, which emphasizes that a part obtained by additive manufacturing (3D printing) can replace a part obtained by casting or fabrication by total cutting. In conclusion, obtaining the manufactured part by combining the two manufacturing processes, the lead time and the production cost has been significantly reduced, while the quality of the obtained product also increased, obtaining a very good roughness.

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 Mechanical Characterization and Thermodynamic Analysis of Laser-Polished Landscape Design Products Using 3D Printing

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2601
Author(s):  
Yue Ba ◽  
Yu Wen ◽  
Shibin Wu
Keyword(s):  
Surface Roughness ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
High Surface ◽  
Landscape Design ◽  
Laser Polishing ◽  
Fused Deposition ◽  
Design Structure ◽  
3D Printed ◽  
Stability And Accuracy

Recent innovations in 3D printing technologies and processes have influenced how landscape products are designed, built, and developed. In landscape architecture, reduced-size models are 3D-printed to replicate full-size structures. However, high surface roughness usually occurs on the surfaces of such 3D-printed components, which requires additional post-treatment. In this work, we develop a new type of landscape design structure based on the fused deposition modeling (FDM) technique and present a laser polishing method for FDM-fabricated polylactic acid (PLA) mechanical components, whereby the surface roughness of the laser-polished surfaces is reduced from over Ra 15 µm to less than 0.25 µm. The detailed results of thermodynamics and microstructure evolution are further analyzed during laser polishing. The stability and accuracy of the results are evaluated based on the standard deviation. Additionally, the superior tensile and flexural properties are examined in the laser-polished layer, in which the ultimate tensile strength (UTS) is increased by up to 46.6% and the flexural strength is increased by up to 74.5% compared with the as-fabricated components. Finally, a real polished landscape model is simulated and optimized using a series of scales.

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