Abrasive Erosion Behavior of Some Plastic Parts Obtained by 3D Printing

2021 ◽  
Vol 396 (1) ◽  
pp. 2000288
Author(s):  
Adelina Hrituc ◽  
Laurenţiu Slătineanu ◽  
Marius Andrei Boca ◽  
Alexandru Sover ◽  
Gheorghe Nagîţ ◽  
...  
Keyword(s):  
3D Printing ◽  
Erosion Behavior ◽  
Abrasive Erosion ◽  
Plastic Parts

scholarly journals Evaluation of the Ability to Accurately Produce Angular Details by 3D Printing of Plastic Parts

Machines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 150
Author(s):  
Andrei Marius Mihalache ◽  
Gheorghe Nagîț ◽  
Laurențiu Slătineanu ◽  
Adelina Hrițuc ◽  
Angelos Markopoulos ◽  
...  
Keyword(s):  
3D Printing ◽  
Point Of View ◽  
Vertex Angle ◽  
Function Type ◽  
Constant Height ◽  
3D Printers ◽  
3D Printed ◽  
Mathematical Processing ◽  
Plastic Parts

3D printing is a process that has become widely used in recent years, allowing the production of parts with relatively complicated shapes from metallic and non-metallic materials. In some cases, it is challenging to evaluate the ability of 3D printers to make fine details of parts. For such an assessment, the printing of samples showing intersections of surfaces with low angle values was considered. An experimental plan was designed and materialized to highlight the influence of different factors, such as the thickness of the deposited material layer, the printing speed, the cooling and filling conditions of the 3D-printed part, and the thickness of the sample. Samples using areas in the form of isosceles triangles with constant height or bases with the same length, respectively, were used. The mathematical processing of the experimental results allowed the determination of empirical mathematical models of the power-function type. It allowed the detection of both the direction of actions and the intensity of the influence exerted by the input factors. It is concluded that the strongest influence on the printer’s ability to produce fine detail, from the point of view addressed in the paper, is exerted by the vertex angle, whose reduction leads to a decrease in printing accuracy.

Algorithm for Detecting and Solving the Problem of Under-Filled Pointed Ends Based on 3D Printing Plastic Droplet Generation

2014 ◽  
Author(s):  
Jelena Prša ◽  
Franz Irlinger ◽  
Tim C. Lueth
Keyword(s):  
3D Printing ◽  
Droplet Generation ◽  
Generation Process ◽  
Critical Area ◽  
Final Shape ◽  
Angle Bisector ◽  
Critical Areas ◽  
3D Printed ◽  
Plastic Parts ◽  
Initial Geometry

In this paper the problem of under-filled pointed ends is introduced and mathematically defined. To tackle this problem, we present a new algorithm that detects and fills the critical areas, which arise at the 3D printed plastic parts. While printing the contours and/or infill lines, due to the limitations based on the width of the extruded material, narrow edges and pointed ends remain improperly filled. This eventually results in 3D printed objects with the final geometry that differs greatly from the initial geometry. This paper presents the fundamentals for solving the problem of 3D printing of geometries which contain narrow pointed ends. The critical area of the pointed ends is mathematically defined and, depending on the angle, the formulae for the calculation of under-filled and over-filled areas are given. The newly developed algorithm, based on the 3D Printing plastic droplet generation process, assures that the droplets of the repeating contours are placed at the edges of the contour-segments and by that minimises the potential under-fills. Furthermore, an additional number of droplets is defined, that are either printed in or removed from the under-filled areas in the angle bisector. The proposed algorithm is applied on parts, whose geometry describes pointed ends. The final 3D printed parts are very appealing and their shape resembles the original geometry more than the final shape of the parts without applying the algorithm.

Produktivitätssteigerung durch Hybridisierung im 3D-Druck/Process development for the automated production of plastic parts with integrated functional components. Increased productivity through hybridization in 3D printing

2020 ◽  
Vol 110 (07-08) ◽  
pp. 521-525
Author(s):  
Michael Baranowski ◽  
Markus Netzer ◽  
Sven Coutandin ◽  
Jürgen Fleischer
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Manufacturing Process ◽  
Process Development ◽  
Flexible Production ◽  
Additive Fertigung ◽  
Automated Production ◽  
Individualized Production ◽  
Plastic Parts ◽  
Functional Components

Die additive Fertigung erlaubt eine standortunabhängige sowie de facto individualisierte Produktion von Bauteilen mit nahezu beliebiger Komplexität. Für die flexible Herstellung von hochfunktionalen Hybridbauteilen fehlt es allerdings an entsprechenden Maschinenkonzepten sowie Automatisierungslösungen. Durch ein hier vorgestelltes Anlagenkonzept sollen Funktionskomponenten in den additiven Herstellungsprozess integriert und neue Möglichkeiten der Bauteilhybridisierung erforscht werden.   Additive manufacturing allows a location-independent and de facto individualized production of components of almost any complexity. However, there is a need for appropriate machine concepts and automation solutions for the flexible production of highly functional hybrid components. A plant concept presented here is intended to integrate functional components into the additive manufacturing process and to explore new possibilities for component hybridization.

scholarly journals Design of ABS Plastic Components through FDM Process for the Quick Replacement of Outworn Parts in a Technological Flow

2018 ◽  
Vol 55 (2) ◽  
pp. 211-214
Author(s):  
Nicoleta Elisabeta Pascu ◽  
Tiberiu Gabriel Dobrescu ◽  
Emilia Balan ◽  
Gabriel Jiga ◽  
Victor Adir
Keyword(s):  
3D Printing ◽  
Fused Deposition Modeling ◽  
Acrylonitrile Butadiene Styrene ◽  
Spare Parts ◽  
Work Piece ◽  
Modeling Technology ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Plastic Components ◽  
Plastic Parts

The paper shows the importance of designing an ABS (Acrylonitrile-Butadiene-Styrene) plastic part which will be produced using FDM (Fused Deposition Modeling) technology; it is obtained a product with the same characteristics provided by the operating guide book. Thus, this solution combines both the capacity of the designer as well as the applied technology and can produce similar or improved plastic components, at the same time maintaining the functional characteristics of the work piece. This paper is a plea for the application of 3D printing using FDM technology for manufacturing components (spare parts) out of production, because the technological systems users no longer have other solutions available for replacing outworn plastic parts. 3D printing using FDM technology is a fast option for replacing outworn components, the modeling, simulation and printing time being shorter than the purchase time of a new subassembly or assembly that has been remanufactured and modernized.

scholarly journals Influence of Process Parameters of Printing on Mechanical Properties of Plastic Parts Produced by FDM 3D Printing Technology

2018 ◽  
Vol 237 ◽  
pp. 02014 ◽  
Author(s):  
Petr Vosynek ◽  
Tomas Navrat ◽  
Adela Krejbychova ◽  
David Palousek
Keyword(s):  
Mechanical Properties ◽  
3D Printing ◽  
Process Parameters ◽  
Fused Deposition Modelling ◽  
Anisotropic Structure ◽  
Influence Of Process Parameters ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Fused Deposition ◽  
Plastic Parts

Fused Deposition Modelling (FDM) is a fast-growing 3D printing technology. This technology expands rapidly even in households. Most users set print parameters only according to their own experience, regardless of the final mechanical properties. In order to predict the mechanical behaviour of the FDM-printed components, it is important to understand not only the properties of the printing material but also the effect of the printing process parameters on the mechanical properties. Components manufactured by FDM technology have an anisotropic structure, therefore the filling angle, fill shape, air gap, print orientation, and print temperature affect the resulting mechanical properties. This work deals with the change of mechanical properties depending on the setting of the filling angle, the shape of the filling, the orientation of the parts during printing, the influence of the material and pigment manufacturer.

scholarly journals Magnetic device for closing skin wounds

2020 ◽  
Vol 9 (11) ◽  
pp. e209119572
Author(s):  
Gleyse Karina Lopes de Oliveira Pinheiro ◽  
André Lima Batista ◽  
Ricardo Ney Cobucci ◽  
Amália Cinthia Meneses Rêgo ◽  
Irami Araújo-Filho ◽  
...  
Keyword(s):  
3D Printing ◽  
Healing Process ◽  
Longitudinal Axis ◽  
Artificial Skin ◽  
Adhesive Tape ◽  
Skin Wounds ◽  
Bone Fragments ◽  
Structural Parts ◽  
Neodymium Magnets ◽  
Plastic Parts

The attempt to repair skin wounds dates back many years. We have observed bone fragments for making needles, hair, fibers, and animal tissues as sutures and even applying sensors to accelerate the healing process throughout history. Despite all the developments, the need for a qualified professional and prior local anesthesia to perform the suture still represent obstacles. The present study aimed to create 3D printing pieces containing N42 neodymium magnets to be fixed to the skin with adhesive tape to promote skin wounds' closure without the need for anesthesia. A descriptive, experimental study was carried out, divided into the Patent search, Ideation and creation, 3D Modeling, 3D printing of structural parts, Assembly, and Testing on artificial skin. ABSplus® plastic parts were created through 3D printing that received N42 neodymium magnets and the application of a double-sided adhesive to attach to the skin. A perilesional arrangement was simulated with the pieces created using an artificial skin model (EasySuture® Standart) after making the incision. After applying the pieces containing N42 neodymium, there was a perfect coaptation of the lesion's edges without detecting interspersed spaces in the longitudinal axis of the incision. The research resulted in creating a prototype that needs improvements and industrial adaptations for viable use in surgical practice.

Optimierung additiv gefertigter Bohrungen*/Post-process machining of holes in 3D-printed plastic parts – Increasing the precision of functional bores in additively manufactured parts

2019 ◽  
Vol 109 (01-02) ◽  
pp. 46-52
Author(s):  
W. Maier ◽  
H. Möhring ◽  
S. Elschner
Keyword(s):  
3D Printing ◽  
Cutting Parameters ◽  
Drill Hole ◽  
Machining Processes ◽  
Post Process ◽  
Layer Manufacturing ◽  
Weak Points ◽  
3D Printed ◽  
Plastic Parts

Die zerspanende Nachbearbeitung additiv gefertigter Bauteile dient der Qualitätssteigerung von Formelementen und Oberflächen, um verfahrensbedingte Schwachstellen etwa des FLM (Fused Layer Manufacturing)-3D-Druck auszugleichen. Die Form- und Lagegenauigkeit der Beispielkontur Bohrung hängt von 3D-Druckparametern wie der Bauteilausrichtung als auch von den gewählten Zerspanparametern wie Drehzahl oder Vorschub ab. Die Ergebnisse der Analyse zeigen die Genauigkeitssteigerung der Funktionsbohrungen und werden in technischen Handlungsempfehlungen zusammengefasst, die auch auf andere Bearbeitungsverfahren übertragbar sind.   Post-process machining of additively manufactured parts increases the quality of moulded parts and surfaces to compensate for weak points in the process, e.g. in FLM (fused layer manufacturing) 3D printing. The geometrical and positional accuracies of a drill hole depend both on 3D printing parameters such as component alignment and on subsequently chosen cutting parameters such as rotational speed and feed. The results of the analysis show an increase in the accuracy of functional holes, summarized in technical recommendations to be transferred to other machining processes.

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