Use of Mini-Max Approximation for the Determination of the Dependency Between the Input and Output Parameters for the Automotive Parts Obtained by Fused Deposition Modeling (FDM)

2018 ◽  
pp. 390-396
Author(s):  
Nicolae-Doru Stănescu ◽  
Maria-Luiza Beșliu-Gherghescu ◽  
Ștefan Tabacu
Keyword(s):  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Input And Output ◽  
Automotive Parts ◽  
Deposition Modeling

Sophisticated Production from Organic PLA Materials Processed Horizontally by Fused Deposition Modeling Method

2017 ◽  
Vol 756 ◽  
pp. 88-95
Author(s):  
Ema Nováková-Marcinčinová ◽  
Anton Panda ◽  
Ľudmila Nováková-Marcinčinová
Keyword(s):  
Mechanical Properties ◽  
Rapid Prototyping ◽  
Main Part ◽  
Fused Deposition Modeling ◽  
Experimental Testing ◽  
Fused Deposition ◽  
Two Samples ◽  
Static Tensile ◽  
Deposition Modeling

The article focuses on the samples production of organic material PLA-PolyLacticAcid – bioplastic. The main part describes the experimental testing of PolyLacticAcid plastic and sample production by Fused Deposition Modeling, Rapid Prototyping technology. The article presents selected carried out tests of mechanical properties focused mainly on the determination of ultimate tensile strength of two PLA-BIO plastic extruded horizontally along the width produced by FDM method, Rapid Prototyping. The authors of this article present their results of test materials in the form of measurement protocols recorded in software, the measured values in a static tensile test, recorded in tables and shown in work graphs. Based on the results of the two samples produced from PLA biomaterials and compared to determine which PLA – bioplastic is stronger.

scholarly journals Determination of Material Requirements for 3D Gel Food Printing Using a Fused Deposition Modeling 3D Printer

Foods ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2272
Author(s):  
Jiwon In ◽  
Haeun Jeong ◽  
Sanghoon Song ◽  
Sea C. Min
Keyword(s):  
Fused Deposition Modeling ◽  
Rheological Parameters ◽  
3D Printer ◽  
Gelling Agents ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Shape Retention ◽  
Food Printing ◽  
Material Requirements

The material requirements for printing gel food with a fused deposition modeling 3D printer were determined based on fidelity, shape retention, and extrudability, as described by the rheological parameters of storage modulus (G’), yield stress (τ0), and phase angle (δ). The material requirements were determined for printing gel food using three formulations containing gelatin, gelatin and pectin, and gum mixture as the gelling agents. As compared with formulations based on gelatin alone, pectin-containing gelatin-based formulations yielded higher δ and lower G’ and τ0 values, while gum mixture-based formulations formed a gel with higher G’ and δ values and a wider range of τ0. Overall, this study presents quantitative material requirements for printing gel products containing gelatin, gelatin–pectin, and gum mixtures.

scholarly journals Strength produced parts by fused deposition modeling

2020 ◽  
Vol 5 (2) ◽  
pp. 057-062
Author(s):  
Juraj Beniak ◽  
Miloš Matúš ◽  
Ľubomír Šooš ◽  
Peter Križan
Keyword(s):  
Tensile Strength ◽  
Fused Deposition Modeling ◽  
Lower Cost ◽  
Strength Properties ◽  
Fused Deposition ◽  
Wide Range ◽  
Deposition Modeling ◽  
Manufacturing Technologies ◽  
Operation Cost

The aim of using additive manufacturing technologies is to be able to produce a wide range of component designs on a single device, using a wide range of materials and minimizing material consumption. There are several technologies that work on different principles. The present article is focused on Fused Deposition Modeling (FDM) technology, which is focused on the application of layers of semi-molten polymer. The advantage is the lower cost for obtaining of FDM device, but also the low operation cost. The output of production are complex components designed for prototyping, but also for final use. Due to the fact that there is requirement to produce parts also for final use, it is necessary to know the strength properties of the parts after production. Because the structure of parts volume is not homogeneous, it is not possible to subject it to conventional calculations and simulations, but it is necessary to take into account the specifics that are produced during production by FDM technology. The present paper shows the results of experimental determination of the tensile strength of manufactured parts. A series of samples with different properties was used on the FDM device and the tensile strength of the components was subsequently measured. The measured values ​​were compared and evaluated.

Experimental Determination of the Tensile Strength of Fused Deposition Modeling Parts

2014 ◽  
Author(s):  
K. Savvakis ◽  
M. Petousis ◽  
A. Vairis ◽  
N. Vidakis ◽  
A. T. Bikmeyev
Keyword(s):  
Tensile Strength ◽  
Fused Deposition Modeling ◽  
Acrylonitrile Butadiene Styrene ◽  
Test Machine ◽  
Average Deviation ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Lower Tensile Strength ◽  
Butadiene Styrene

Acrylonitrile–butadiene–styrene (ABS) is a popular engineering thermoplastic and it is the most common material used in fused deposition modeling (FDM) technology. This technology is nowadays used for the production of prototypes and functional parts as well. It is therefore critical to know the mechanical properties of these parts, which, is as expected different from their nominal values. In this work the tensile strength of parts build with the FDM process is measured. ABS and ABS plus parts were built with different building parameters and were tested according to the ASTM D638-02a standard on a Schenk Trebel Co. tensile test machine. It was found that the building direction does not significantly influence the tensile strength of the parts, although the parts were anisotropic, as expected. Parts build with larger layer thickness showed lower tensile strength. The average deviation between nominal and experimental tensile strength was about 15% for the ABS and about 42% for the ABS plus material. The ABS plus showed on average 9% higher strength than ABS.

Biodegradable 3D Printed Polymer Microneedles for Transdermal Drug Delivery

2018 ◽  
Author(s):  
Michael A. Luzuriaga ◽  
Danielle R. Berry ◽  
John C. Reagan ◽  
Ronald A. Smaldone ◽  
Jeremiah J. Gassensmith
Keyword(s):  
Drug Delivery ◽  
3D Printing ◽  
Transdermal Drug Delivery ◽  
Fused Deposition Modeling ◽  
Fused Deposition ◽  
Modeling Software ◽  
Deposition Modeling ◽  
3D Printed ◽  
Microfabrication Technique ◽  
Mechanical Strengths

Biodegradable polymer microneedle (MN) arrays are an emerging class of transdermal drug delivery devices that promise a painless and sanitary alternative to syringes; however, prototyping bespoke needle architectures is expensive and requires production of new master templates. Here, we present a new microfabrication technique for MNs using fused deposition modeling (FDM) 3D printing using polylactic acid, an FDA approved, renewable, biodegradable, thermoplastic material. We show how this natural degradability can be exploited to overcome a key challenge of FDM 3D printing, in particular the low resolution of these printers. We improved the feature size of the printed parts significantly by developing a post fabrication chemical etching protocol, which allowed us to access tip sizes as small as 1 μm. With 3D modeling software, various MN shapes were designed and printed rapidly with custom needle density, length, and shape. Scanning electron microscopy confirmed that our method resulted in needle tip sizes in the range of 1 – 55 µm, which could successfully penetrate and break off into porcine skin. We have also shown that these MNs have comparable mechanical strengths to currently fabricated MNs and we further demonstrated how the swellability of PLA can be exploited to load small molecule drugs and how its degradability in skin can release those small molecules over time.

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