A Case Study in 3D Printed Porous Ceramics: Infant Incubator Humidification System

2012 ◽  
Author(s):  
Olaf Diegel ◽  
Andrew Withell ◽  
Deon Debeer ◽  
Mark Wu
Keyword(s):  
Material Properties ◽  
Low Cost ◽  
Ceramic Materials ◽  
Porous Ceramics ◽  
Burn Out ◽  
Infant Incubator ◽  
3D Printers ◽  
3D Printed ◽  
Factorial Design Experiment

This paper describes research in adapting 3D printers to operate with low-cost ceramic materials. The components produced with these clay-based ceramic powders can be fired to produce strong, complex and lightweight ceramic parts. The final material properties, including the porosity of the parts, can be controlled through the part design and, potentially, through additives to the material that burn out during firing. The paper begins with a brief description of the 3D printing process and how it can be used with clay powders. It then introduces a factorial design experiment initiated to explore the effect of ingredient and parameter variations on the dimensional stability and material properties of green and fired ceramic parts. It then presents a case study in which 3D printed ceramic parts are used in the humidification system for an infant incubator for developing countries.

scholarly journals Additive Manufactured Waveguide for E-Band Using Ceramic Materials

2021 ◽  
Vol 12 (1) ◽  
pp. 212
Author(s):  
Florian Hubert ◽  
Tobias Bader ◽  
Larissa Wahl ◽  
Andreas Hofmann ◽  
Konstantin Lomakin ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Attenuation Coefficient ◽  
Low Cost ◽  
Ceramic Materials ◽  
Electrical Measurements ◽  
3D Printers ◽  
3D Printed ◽  
Application Fields ◽  
Metallization Process ◽  
Waveguide Geometry

Ceramic materials are chemical- and temperature-resistant and, therefore, enable novel application fields ranging from automotive to aerospace. With this in mind, this contribution focuses on developing an additive manufacturing approach for 3D-printed waveguides made of ceramic materials. In particular, a special design approach for ceramic waveguides, which introduces non-radiating slots into the waveguides sidewalls, and a customized metallization process, are presented. The developed process allows for using conventional stereolithographic desktop-grade 3D-printers. The proposed approach has, therefore, benefits such as low-cost fabrication, moderate handling effort and independence of the concrete waveguide geometry. The performance of a manufactured ceramic WR12 waveguide is compared to a commercial waveguide and a conventionally printed counterpart. For that reason, relevant properties, such as surface roughness and waveguide geometry, are characterized. Parsing the electrical measurements, the ceramic waveguide specimen features an attenuation coefficient of 30–60 dB/m within the E-Band. The measured attenuation coefficient is 200% and 300% higher compared to the epoxy resin and the commercial waveguide and is attributed to the increased surface roughness of the ceramic substrate.

scholarly journals Flexible 3D Printed Molds for Educational Use. Digital Fabrication of 3D Typography

2019 ◽  
Vol 15 (13) ◽  
pp. 4 ◽  
Author(s):  
Alejandro Bonnet De León ◽  
Jose Luis Saorin ◽  
Jorge De la Torre-Cantero ◽  
Cecile Meier ◽  
María Cabrera-Pardo
Keyword(s):  
3D Modeling ◽  
Low Cost ◽  
Digital Fabrication ◽  
3D Printer ◽  
School Environments ◽  
Flexible Material ◽  
Educational Environments ◽  
3D Printers ◽  
3D Printed ◽  
The Subject

<p class="0abstract"><span lang="EN-US">One of the drawbacks of using 3D printers in educational environments is that the creation time of each piece is high and therefore it is difficult to manufacture at least one piece for each student. This aspect is important so that each student can feel part of the manufacturing process. To achieve this, 3D printers can be used, not to make pieces, but to make the molds that students use to create replicas. On the other hand, for a mold to be used to make several pieces, it is convenient to make it with flexible material. However, most used material for 3D printers (PLA) is very rigid. To solve this problem, this article designs a methodology that allows the use of low-cost 3D printers (most common in school environments) with flexible material so that each mold can be used to manufacture parts for several students. To print flexible material with low-cost printers, it is necessary to adapt the machine and the print parameters to work properly. This article analyzes the changes to be made with a low cost 3D printer and validates the use of molds in school environments. A pilot test has been carried out with 8 students of the subject of Typography, in the School of Art and Superior of Design of Tenerife. During the activity, the students carried out the process of designing a typography and creating digital molds for 3D printing with flexible material. The designs were made using free 3D modeling programs and low-cost technologies.</span></p>

Environmental Friendly Ceramic Building Materials

2016 ◽  
Vol 690 ◽  
pp. 150-155 ◽  
Author(s):  
Toyohiko Sugiyama ◽  
Keiji Kusumoto ◽  
Masayoshi Ohashi ◽  
Akinori Kamiya
Keyword(s):  
High Performance ◽  
Building Materials ◽  
Bending Strength ◽  
Low Cost ◽  
Porous Ceramic ◽  
Ceramic Materials ◽  
Porous Ceramics ◽  
Heat Island ◽  
Solar Reflectance ◽  
Ceramic Building

The global warming is one of the most serious problems. The decrease of CO2 emissions in our daily life is an important subject today. Recently, an application of water retentive materials as a paving material has attracted a great deal of attention in Japan. This material is effective for reducing heat island phenomenon, which is also a recent problem in many cities in Japan. Water retained in the material during rainfall evaporates when heated by sunshine. The latent heat absorbed by evaporating water works to cool the surroundings. The water retentive ceramic products are expected to be useful for building materials as well as pavements. Several performances are required on the water retentive ceramics when it is used as building materials. Its cost and quality are the important factors. Porous ceramic materials formed by pressing without firing is one of ideal low cost and eco-friendly candidates. The porous ceramics is also expected to be produced from recycled ceramic materials. By optimizing its composition and forming method, a water retentive material with high performance was developed. The trial product had the properties as follows; fracture toughness: 1300N, bending strength: 175N/cm, water absorption: larger than 30%, and precision in size (length): +-0.5mm for 150mm. The product showed also enough frost resistance. In this paper, the fundamental properties of the porous ceramics prepared without firing are discussed with referring to the results of the field experiments.Another subject recently studied by several tile manufactures in Japan is the glazed tile with high solar reflectance. The exterior walls covered with such a high solar reflectance tile keeps the surface temperature of the wall lower under the strong sunshine of summer. It is effective against heat-island phenomenon. In this paper, the outline of the research results on visible and infrared reflectance of many kinds of glazes is also discussed.

The Sparthan Three-Dimensional Printed Exo-Glove: A Preliminary Evaluation of Performance Via Case Study

2019 ◽  
Vol 13 (3) ◽  
Author(s):  
Tomás A. Georgiou ◽  
Davide Asnaghi ◽  
Alva Liang ◽  
Alice M. Agogino
Keyword(s):  
Light Intensity ◽  
Daily Living ◽  
Low Cost ◽  
Three Dimensional ◽  
Preliminary Evaluation ◽  
Evaluation Of Performance ◽  
3D Printed ◽  
Hand Exoskeleton ◽  
And Performance

This paper describes the development and testing of a low-cost three-dimensional (3D) printed wearable hand exoskeleton to assist people with limited finger mobility and grip strength. The function of the presented orthosis is to support and enable light intensity activities of daily living and improve the ability to grasp and hold objects. The Sparthan Exoskeleton prototype utilizes a cable-driven design applied to individual digits with motors. The initial prototype is presented in this paper along with a preliminary evaluation of durability and performance efficacy.

On the development of low cost, optimizable, 3D printed turbine flow meters for pipe and open channel applications

2020 ◽  
Author(s):  
Adrian Butler ◽  
Tom Rowan ◽  
Alex Colyer
Keyword(s):  
Open Channel ◽  
Lower Cost ◽  
Low Cost ◽  
Flow Meters ◽  
Skill Sets ◽  
Know How ◽  
3D Printers ◽  
3D Printed ◽  
Further Development ◽  
Turbine Flow Meter

&lt;div&gt; &lt;p&gt;The work sets out a method and evaluates the accuracy of a 3D printed turbine flow meter for open channel and pipe flow; that can be optimised for different situations.&amp;#160;&amp;#160;The motivation for this project was to create flow meters that are low cost and available to community groups and interested individuals, this work was conducted as part of the CAMELLIA project (Community Water Management for a Liveable London).&amp;#160;&amp;#160;The flowmeters have been trialled in a number of locations by users with different skill sets and technical know-how.&amp;#160;&amp;#160;Hall effect sensors have been coupled with consumer grade electronics to develop the most opensource system possible.&amp;#160;&amp;#160;This work has taken advantage of recent advances in DLP printing, allowing for greater resolution at a lower cost than previous generations of 3D printers.&amp;#160;&amp;#160;This is combined with work developed by the Open Prop software team, has enabled user customisable sensors to be built.&amp;#160;&amp;#160;&lt;/p&gt; &lt;/div&gt;&lt;div&gt; &lt;p&gt;The presented&amp;#160;work&amp;#160;aims&amp;#160;to create an&amp;#160;opensource, low cost and easy to use solution to&amp;#160;some&amp;#160;flow&amp;#160;monitoring&amp;#160;problems.&amp;#160;&amp;#160;This paper details the lessons learnt and successes of this approach; it&amp;#160;aims to create a basis for which further development and deployment of these sensors can be achieved.&amp;#160;&amp;#160;&lt;/p&gt; &lt;/div&gt;

3D Printed Ceramics for Tableware, Artists/Designers and Specialist Applications

2014 ◽  
Vol 608 ◽  
pp. 351-357 ◽  
Author(s):  
David Huson ◽  
Stephen Hoskins
Keyword(s):  
Ceramic Body ◽  
Ceramic Materials ◽  
The West ◽  
Novel Technique ◽  
Internal Structures ◽  
Short Run ◽  
3D Printers ◽  
3D Printed ◽  
The University ◽  
Forming Methods

The Centre for Fine Print Research at the University of the West of England has over five years experience in the 3D printing of ceramic materials. The first project undertaken was to investigate the use of 3D technologies for artists and resulted in the development of a patented ceramic body suitable for use in Z Corporation 3D printers. After bisque firing this material can be further processed using conventional glazing and decorating techniques. A follow on project has resulted in a modified ceramic body and the development of firing supports to enable thin section ceramic tableware to be produced for ceramic industry concept modelling and short run or one-off pieces for artists and designers. This paper will detail the progress of the research and will explain by using case studies and examples of collaboration with a leading UK pottery manufacturer, individual artists and designers how this novel technique can be utilised to form shapes and forms difficult or impossible to realise by conventional forming methods. The potential of how the ability to form ceramic objects with complex internal structures could be beneficial to more specialist ceramics industries will also be explored.

scholarly journals Optimization of community-led 3D printing for the production of protective face shields

2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Peter Chengming Zhang ◽  
Yousuf Ahmed ◽  
Isra M. Hussein ◽  
Edem Afenu ◽  
Manon Feasson ◽  
...  
Keyword(s):  
3D Printing ◽  
Health Workers ◽  
Production Capacity ◽  
Start Time ◽  
Case Presentation ◽  
Global Pandemic ◽  
The Face ◽  
3D Printers ◽  
3D Printed

Abstract Background As the healthcare system faced an acute shortage of personal protective equipment (PPE) during the COVID-19 pandemic, the use of 3D printing technologies became an innovative method of increasing production capacity to meet this acute need. Due to the emergence of a large number of 3D printed face shield designs and community-led PPE printing initiatives, this case study examines the methods and design best optimized for community printers who may not have the resources or experience to conduct such a thorough analysis. Case presentation We present the optimization of the production of 3D printed face shields by community 3D printers, as part of an initiative aimed at producing PPE for healthcare workers. The face shield frames were manufactured using the 3DVerkstan design and were coupled with an acetate sheet to assemble a complete face shield. Rigorous quality assurance and decontamination protocols ensured community-printed PPE was satisfactory for healthcare use. Conclusion Additive manufacturing is a promising method of producing adequate face shields for frontline health workers because of its versatility and quick up-start time. The optimization of stacking and sanitization protocols allowed 3D printing to feasibly supplement formal public health responses in the face of a global pandemic.

Anisotropic magnetoresistive sensors for control of additive manufacturing machines

2019 ◽  
Vol 86 (10) ◽  
pp. 609-618
Author(s):  
Benedikt Hampel ◽  
Marco Tollkühn ◽  
Meinhard Schilling
Keyword(s):  
Additive Manufacturing ◽  
Low Cost ◽  
Magnetic Sensors ◽  
Car Industry ◽  
Dimensional Measurements ◽  
3D Printers ◽  
3D Printed ◽  
Rotational Motions ◽  
Contact Position

AbstractMagnetic sensors are employed for dimensional measurements by detection of sensor motion relative to a small magnet. This is widely used everywhere in industrial automation, car industry and in many home appliances. The use of magnetic sensors in machines for additive manufacturing improves control and long term reliability by non contact position measurements. Magnetic sensors with linearized characteristic based on the anisotropic magnetoresistance (AMR) effect can replace mechanical switches, while specialized AMR angle sensors are preferred for the measurement of rotational motions. Both are easy to use and can be integrated with help of 3D printed holders at low cost. In this work, appropriate sensors are selected, integrated and discussed regarding magnetic disturbance signals apparent in low-cost 3D printers.

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