scholarly journals A Method for Analyzing the Influence of Process and Design Parameters on the Build Time of Additively Manufactured Components

2019 ◽  
Vol 1 (1) ◽  
pp. 649-658
Author(s):  
Martin Hallmann ◽  
Benjamin Schleich ◽  
Sandro Wartzack
Keyword(s):  
Fused Deposition Modeling ◽  
Time Estimation ◽  
Design Parameters ◽  
Analysis Method ◽  
Fused Deposition ◽  
Manufactured Products ◽  
Build Time ◽  
Sensitivity Analysis Method ◽  
Deposition Modeling ◽  
The Individual

AbstractWhen using additive manufacturing processes, the choice of the numerous settings for the process and design parameters significantly influences the build and production time. To reduce the required build time, it is useful to adapt the parameters with the greatest influence. However, since the contribution of the individual parameters is not readily apparent, a sensible choice of process and design parameters can become a challenging task.Thus, the following article presents a method, that enables the product developer to determine the main contributors to the required build time of additively manufactured products. By using this sensitivity analysis method, the contributors of the individual parameters can be analyzed for a given parametrized CAD model with the help of an analysis-based build time estimation approach. The novelty of the contribution can be found in providing a method that allows studying both design and process parameters simultaneously, taking the machine to be used into account. The exemplary application of the presented method to a sample part manufactured by Fused Deposition Modeling demonstrates its benefits and applicability.

scholarly journals Parameters Influencing the Outcome of Additive Manufacturing of Tiny Medical Devices Based on PEEK

Materials ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 466 ◽  
Author(s):  
Yiqiao Wang ◽  
Wolf-Dieter Müller ◽  
Adam Rumjahn ◽  
Andreas Schwitalla
Keyword(s):  
Medical Devices ◽  
Fused Deposition Modeling ◽  
High Accuracy ◽  
Design Parameters ◽  
Fused Deposition ◽  
Polyether Ether Ketone ◽  
Deposition Modeling ◽  
3D Printed ◽  
Ether Ketone

In this review, we discuss the parameters of fused deposition modeling (FDM) technology used in finished parts made from polyether ether ketone (PEEK) and also the possibility of printing small PEEK parts. The published articles reporting on 3D printed PEEK implants were obtained using PubMed and search engines such as Google Scholar including references cited therein. The results indicate that although many have been experiments conducted on PEEK 3D printing, the consensus on a suitable printing parameter combination has not been reached and optimized parameters for printing worth pursuing. The printing of reproducible tiny-sized PEEK parts with high accuracy has proved to be possible in our experiments. Understanding the relationships among material properties, design parameters, and the ultimate performance of finished objects will be the basis for further improvement of the quality of 3D printed medical devices based on PEEK and to expand the polymers applications.

scholarly journals Electromagnetic Wave Absorption Properties of Structural Conductive ABS Fabricated by Fused Deposition Modeling

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1217 ◽  
Author(s):  
Wenwen Lai ◽  
Yan Wang ◽  
Junkun He
Keyword(s):  
Electromagnetic Wave ◽  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Analysis Method ◽  
Absorption Bands ◽  
Absorption Properties ◽  
Theoretical Simulation ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Absorption Performance

To obtain excellent electromagnetic wave (EMW) absorption materials, the design of microstructures has been considered as an effective method to adjust EMW absorption performance. Owing to its inherent capability of effectively fabricating materials with complex various structures, three-dimensional (3D) printing technology has been regarded as a powerful tool to design EMW absorbers with plentiful microstructures for the adjustment of EMW absorption performance. In this work, five samples with various microstructures were prepared via fused deposition modeling (FDM). An analysis method combining theoretical simulation calculations with experimental measurements was adopted to investigate EMW absorbing properties of all samples. The wood-pile-structural sample possessed wider effective absorption bandwidth (EAB; reflection loss (RL) < − 10 dB, for over 90% microwave absorption) of 5.43 GHz and generated more absorption bands (C-band and Ku-band) as compared to the honeycomb-structural sample at the same thickness. Designing various microstructures via FDM proved to be a convenient and feasible method to fabricate absorbers with tunable EMW absorption properties, which provides a novel path for the preparation of EMW absorption materials with wider EAB and lower RL.

A review of melt extrusion additive manufacturing processes: II. Materials, dimensional accuracy, and surface roughness

2015 ◽  
Vol 21 (3) ◽  
pp. 250-261 ◽  
Author(s):  
Brian N. Turner ◽  
Scott A Gold
Keyword(s):  
Surface Roughness ◽  
Additive Manufacturing ◽  
Product Design ◽  
Fused Deposition Modeling ◽  
Dimensional Accuracy ◽  
Design Parameters ◽  
Content Type ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Am Processes

Purpose – The purpose of this paper is to critically review the literature related to dimensional accuracy and surface roughness for fused deposition modeling and similar extrusion-based additive manufacturing or rapid prototyping processes. Design/methodology/approach – A systematic review of the literature was carried out by focusing on the relationship between process and product design parameters and the dimensional and surface properties of finished parts. Methods for evaluating these performance parameters are also reviewed. Findings – Fused deposition modeling® and related processes are the most widely used polymer rapid prototyping processes. For many applications, resolution, dimensional accuracy and surface roughness are among the most important properties in final parts. The influence of feedstock properties and system design on dimensional accuracy and resolution is reviewed. Thermal warping and shrinkage are often major sources of dimensional error in finished parts. This phenomenon is explored along with various approaches for evaluating dimensional accuracy. Product design parameters, in particular, slice height, strongly impact surface roughness. A geometric model for surface roughness is also reviewed. Originality/value – This represents the first review of extrusion AM processes focusing on dimensional accuracy and surface roughness. Understanding and improving relationships between materials, design parameters and the ultimate properties of finished parts will be key to improving extrusion AM processes and expanding their applications.

scholarly journals A fundamental study of parameter adjustable additive manufacturing process based on FDM process

2018 ◽  
Vol 189 ◽  
pp. 05001
Author(s):  
Qia Wan ◽  
Youjian Xu ◽  
Can Lu
Keyword(s):  
Fused Deposition Modeling ◽  
High Quality ◽  
Fundamental Study ◽  
High Productivity ◽  
Fused Deposition ◽  
Part Geometry ◽  
Build Time ◽  
Deposition Modeling ◽  
Quality Of Products

In Fused deposition modeling (FDM) process, there has been a confliction between high productivity and high quality of products. The product resolution is proportional to the flow rate of heated material extrusion, which directly affects the build time. To reduce the build time with acceptable resolution, the idea of parameter adjustable printing process has been introduced. The controllable extruder was modified and two types of diameter changeable nozzle have been designed. This work realizes different resolution building based on the part geometry during FDM process, which can efficiently assure the quality of products and improve the productivity at the same time.

Evaluation of the Effect of Infill Pattern on Mechanical Stregnth of Additively Manufactured Specimen

2017 ◽  
Vol 887 ◽  
pp. 128-132 ◽  
Author(s):  
Shaheryar Atta Khan ◽  
Bilal Ahmed Siddiqui ◽  
Muhammad Fahad ◽  
Maqsood Ahmed Khan
Keyword(s):  
Additive Manufacturing ◽  
Open Source ◽  
Fused Deposition Modeling ◽  
Fused Filament Fabrication ◽  
Fused Deposition ◽  
Additive Manufacturing Technology ◽  
Internal Structures ◽  
The World ◽  
Build Time ◽  
Deposition Modeling

Additive manufacturing has stepped down from the world of Sci-Fi into reality. Since its conception in the 1980s the technology has come a long way. May variants of the technology are now available to the consumer. With the advent of custom built (open source) Fused Deposition Modeling based printing technology Fused Filament Fabrication (FFF), FDM/FFF has become the most used Additive Manufacturing technology. The effects of the different infill patterns of FDM/FFF on the mechanical properties of a specimen made from ABS are studied in this paper. It is shown that due to changes in internal structures, the tensile strength of the specimen changes. The study also investigate the effect of infill pattern on the build time of the specimen. Extensive testing yielded the optimal infill pattern for FDM/FFF. An open source Arduino based RepRap printer was used for the preparation of specimen and showed promising results for rapid prototyping of custom built parts to bear high loads. The study can help with the increase in the use of additive manufacturing for the manufacturing of mechanically functioning parts such as prosthetics

scholarly journals Effect of a Rapid Tooling Technique in a 3D Printed Part for Developing an EDM Electrode

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Turki Alamro ◽  
Mohammed Yunus ◽  
Rami Alfattani ◽  
Ibrahim A. Alnaser
Keyword(s):  
High Temperatures ◽  
Fused Deposition Modeling ◽  
Removal Rate ◽  
Rapid Tooling ◽  
Fused Deposition ◽  
Electro Discharge Machining ◽  
Build Time ◽  
Deposition Modeling ◽  
3D Printed

The role of rapid tooling (RT) in additive manufacturing (AM) seems essential in improving and spreading out the vista of manufacturing proficiency. In this article, attempts were made to discover the feasibility and the accomplishments of the RT electrode in the field of electro-discharge machining (EDM). Fused deposition modeling (FDM) is one of the AM processes adopted to fabricate the EDM electrode prototype by coating with copper. The copper is deposited on FDM-built ABS plastic component for about 1 mm through thick electroplating. The copper-coated FDM (CCF) and solid copper (SC) electrodes are used to conduct experiments on a die-sinking EDM machine using tool alloy steel as a workpiece. The CCF polymer electrode can be efficiently used in EDM operations as the build time of any complex shape was substantially reduced. However, the material removal rate (MRR) is far less than that of the SC electrode. It is recommended that the CCF electrode is used for semifinishing and finishing operations in which MRR happens to be less. However, CCF can get spoiled as high temperatures are generated on the machining tool, and the plastic core hardly sustains such high temperatures.

Optimization of Support Material and Build Time in Fused Deposition Modeling (FDM)

2011 ◽  
Vol 110-116 ◽  
pp. 2245-2251 ◽  
Author(s):  
G. Pavan Kumar ◽  
Srinivasa Prakash Regalla
Keyword(s):  
Fused Deposition Modeling ◽  
Quality Parameters ◽  
Support Material ◽  
Fused Deposition ◽  
Build Time ◽  
Raster Angle ◽  
Deposition Modeling ◽  
Material Volume ◽  
Factorial Design Of Experiments ◽  
Plastic Parts

Fused deposition modeling (FDM) has evolved as one of the fastest growing layer manufacturing (LM) technology because of its capability to build even functional plastic parts with geometrical complexity in a reasonable time period. The quality of the production process depends on various process parameters, the most important of them being layer thickness (h), raster angle (θ), orientation (φ), contour width (c) and part raster width (w). In the present study, the influence of these parameters on two process quality parameters, namely, build time and the support material volume are studied on a rotational part modeled on a FDM 200mc machine. A 25 full factorial Design of Experiments (DOE) methodology was employed and the results for build time and support material volume of the 32 experiments were analyzed using Design Expert®. Analysis of variance (ANOVA) was done and based on the ANOVA results the model equation for the two quality parameters in both coded and original factors has been developed. Comments on the results obtained and interaction effects are included at the end of the paper.

Optimization of FDM Prototypes Mechanical Properties with Path Generation Strategy

2014 ◽  
Vol 474 ◽  
pp. 273-278 ◽  
Author(s):  
Emil Spišák ◽  
Ivan Gajdoš ◽  
Ján Slota
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Fused Deposition Modeling ◽  
Path Generation ◽  
Material Consumption ◽  
Fused Deposition ◽  
Build Time ◽  
Result Show ◽  
Deposition Modeling ◽  
Modeling Material

This paper present result of a study evaluating the influence of path generation strategy on mechanical properties of Fused Deposition Modeling (FDM) prototypes. Several scientific studies were researching the problematic of path generation and internal structure of FDM prototypes. Mostly the influence on mechanical properties was observed. This paper is aimed on determine the influence of outline number and internal air-gap on tensile strength of parts built from ULTEM 9085. For this two variables was determined the influence on built time and consumption of modeling material. Result show that proper model orientation when the orientation of load is known, can help to reduce the build time and material consumption.

scholarly journals Research on improving the accuracy of FDM 3D printing process by using a new designed calibrating part

2019 ◽  
Vol 299 ◽  
pp. 01007
Author(s):  
Răzvan Păcurar ◽  
Valentin Buzilă ◽  
Ancuţa Păcurar ◽  
Eugen Guţiu ◽  
Sergiu Dan Stan ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Analysis Method ◽  
Element Analysis ◽  
Printing Process ◽  
Software Application ◽  
Fused Deposition ◽  
Finite Element Analysis Method ◽  
Deposition Modeling

The article presents theoretical and experimental research methods that were used at the Technical University of Cluj-Napoca (TUCN) to improve the accuracy of Fused Deposition Modeling (FDM) 3D printing process. Finite element analysis method was successfully used for estimating the shrinkages of an original calibrating part that has been originally conceived for this purpose, this part being finally made using an original software application and FDM 3D printing equipment at TUC-N.

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