scholarly journals Ceramic Workshop Adapted with 3D Technologies to Improve the Self-Esteem of People with Disabilities

2020 ◽  
Vol 12 (21) ◽  
pp. 9063
Author(s):  
Alejandro Bonnet de León ◽  
Cecile Meier ◽  
Jose Luis Saorin
Keyword(s):  
Simple Technique ◽  
Low Cost ◽  
Self Esteem ◽  
Digital Tools ◽  
Digital Manufacturing ◽  
Observation Data ◽  
3D Scanner ◽  
3D Printed ◽  
People With Intellectual Disabilities ◽  
Manufacturing Technologies

This paper describes a process to adapt tools in an artistic ceramic workshop in which custom molds are created using low-cost digital manufacturing technologies. The digitalization of busts by a 3D scanner and their transformation into 3D printed molds is a simple technique that only requires basic digital tools. These molds were used in the artistic ceramic workshop of the Psychopedagogical Center of the Order of San Juan de Dios in Tenerife, where the authors worked with people with intellectual disabilities to make ceramic pieces. These people, in most cases, do not have the necessary skills for detail modeling; however, with the help of digital manufacturing technologies, they can produce molds of their own faces and create personalized figures autonomously. In this way, they increase their self-esteem and autonomy and discover new possibilities for making products; as a result, they feel fulfilled and confirm that they can be part of the creation process. To obtain an evaluation of the activity, a qualitative study was carried out, and observation data were collected. The attitudes of the users were compared with observations made during a similar activity without using molds or technologies. It was observed that the attitude of the participants significantly improved when they obtained more satisfactory results with the use of molds.

scholarly journals Rapid Prototyping of Personalized Articular Orthoses by Lamination of Composite Fibers upon 3D-Printed Molds

Materials ◽  
2020 ◽  
Vol 13 (4) ◽  
pp. 939
Author(s):  
Juan Manuel Munoz-Guijosa ◽  
Rodrigo Zapata Martínez ◽  
Adrián Martínez Cendrero ◽  
Andrés Díaz Lantada
Keyword(s):  
High Performance ◽  
Medical Technology ◽  
Mechanical Response ◽  
Low Cost ◽  
Composite Fibers ◽  
Design And Manufacturing ◽  
3D Printed ◽  
Manufacturing Technologies ◽  
Carbon Fiber Epoxy ◽  
User Centered Development

Advances in additive manufacturing technologies and composite materials are starting to be combined into synergic procedures that may impact the biomedical field by helping to achieve personalized and high-performance solutions for low-resource settings. In this article, we illustrate the benefits of 3D-printed rapid molds, upon which composite fibers can be laminated in a direct and resource-efficient way, for the personalized development of articular splints. The rapid mold concept presented in this work allows for a flexible lamination and curing process, even compatible with autoclaves. We demonstrate the procedure by completely developing an autoclave-cured carbon fiber–epoxy composite ankle immobilizing, supporting, or protecting splint. These medical devices may support patients in their recovery of articular injuries and for promoting a more personalized medical care employing high-performance materials, whose mechanical response is analyzed and compared to that of commercial devices. In fact, this personalization is fundamental for enhanced ergonomics, comfort during rehabilitation, and overall aesthetics. The proposed design and manufacturing strategies may support the low-cost and user-centered development of a wide set of biomedical devices and help to delocalize the supply chain for involving local populations in the development of medical technology.

scholarly journals Development and virtual validation of a novel digital workflow to rehabilitate palatal defects by using smartphone-integrated stereophotogrammetry (SPINS)

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Taseef Hasan Farook ◽  
Nafij Bin Jamayet ◽  
Jawaad Ahmed Asif ◽  
Abdul Sattar Din ◽  
Muhammad Nasiruddin Mahyuddin ◽  
...  
Keyword(s):  
Low Cost ◽  
Laser Scanner ◽  
3D Models ◽  
Prosthetic Rehabilitation ◽  
3D Scanner ◽  
Physical Damage ◽  
Record Keeping ◽  
Medical Software ◽  
3D Printed ◽  
Standard Laser

AbstractPalatal defects are rehabilitated by fabricating maxillofacial prostheses called obturators. The treatment incorporates taking deviously unpredictable impressions to facsimile the palatal defects into plaster casts for obturator fabrication in the dental laboratory. The casts are then digitally stored using expensive hardware to prevent physical damage or data loss and, when required, future obturators are digitally designed, and 3D printed. Our objective was to construct and validate an economic in-house smartphone-integrated stereophotogrammetry (SPINS) 3D scanner and to evaluate its accuracy in designing prosthetics using open source/free (OS/F) digital pipeline. Palatal defect models were scanned using SPINS and its accuracy was compared against the standard laser scanner for virtual area and volumetric parameters. SPINS derived 3D models were then used to design obturators by using (OS/F) software. The resultant obturators were virtually compared against standard medical software designs. There were no significant differences in any of the virtual parameters when evaluating the accuracy of both SPINS, as well as OS/F derived obturators. However, limitations in the design process resulted in minimal dissimilarities. With further improvements, SPINS based prosthetic rehabilitation could create a viable, low cost method for rural and developing health services to embrace maxillofacial record keeping and digitised prosthetic rehabilitation.

scholarly journals Calibration of a 2D laser scanner system and rotating platform using a point-plane constraint

2015 ◽  
Vol 12 (1) ◽  
pp. 307-322 ◽  
Author(s):  
Laksono Kurnianggoro ◽  
Van-Dung Hoang ◽  
Kang-Hyun Jo
Keyword(s):  
Rotation Axis ◽  
Low Cost ◽  
Laser Scanner ◽  
Synthetic Data ◽  
Calibration Procedure ◽  
Observation Data ◽  
3D Scanner ◽  
Rotating Platform ◽  
Calibration Pattern ◽  
Two Parameters

The purpose of this study was to produce a low cost 3D scanner system using a rotating 2D laser scanner. There are two key parameters of this system, the rotation axis and the rotation radius. These two parameters were extracted through a calibration procedure. The calibration requires a planar checkerboard calibration pattern. Several poses were scanned to obtain the observation data. The rotation axis and the rotation radius were extracted by solving a linear equation constructed from a point-plane constraint, where all points lie on a plane and have a zero dot product to the surface normal to the plane. This method was tested on a simulation environment by generating synthetic data of the scanned calibration pattern. A comprehensive analysis was carried out to evaluate the performance of the proposed method. From the simulation results, it was demonstrated that this method achieved highly accurate results with an orientation error of 0.018 degree and a radius error of 0.2 cm.

scholarly journals Fabricación digital de maquetas para la mejora de la interpretación cartográfica y el fomento de la competencia creativa = Digital manufacturing of 3D DTM models to enhance cartographic interpretation & creative competence

2017 ◽  
Vol 1 (1) ◽  
pp. 11
Author(s):  
Dámari Melían Díaz ◽  
Carlos Carbonell Carrera ◽  
José Luis Saorín Pérez ◽  
Jorge De la Torre Cantero ◽  
Norena Martín Dorta
Keyword(s):  
Low Cost ◽  
Three Dimensional ◽  
Digital Manufacturing ◽  
Master's Students ◽  
Terrain Models ◽  
Preliminary Validation ◽  
Before And After ◽  
Manufacturing Technologies ◽  
The University ◽  
Academic Year

ResumenEn educación superior, para las titulaciones de ingeniería y arquitectura es precisa la adquisición y desarrollo de competencias como la creatividad y la visión espacial. La competencia espacial se puede desarrollar mediante la realización de ejercicios y la creatividad mejora, si el diseño de los ejercicios permite múltiples soluciones. La comprensión del relieve topográfico es necesaria para la integración de proyectos de arquitectura e ingeniería en el entorno. Sin embargo, en la formación universitaria se han detectado carencias para la interpretación de las formas del relieve. Las maquetas de terreno, pueden ayudar a suplir esta carencia. La aparición de tecnologías de fabricación digital de bajo coste permiten la creación de maquetas de terreno y su incorporación en la docencia reglada. En este artículo se presentan los resultados de dos experiencias. En la primera, llevada a cabo durante el curso 2015-16 con 33 alumnos universitarios, se realizan maquetas topográficas utilizando secciones apiladas, con el objetivo de mejorar la interpretación tridimensional de las formas del terreno. La segunda parte de la experiencia, llevada a cabo durante el curso 2016-17 se realiza con alumnos de Máster. Se trata de una validación preliminar, con pocos alumnos, en la que se pretende incorporar aspectos creativos a la realización de maquetas de terrenos. Para medir la variación de la competencia creativa en los alumnos se utiliza el Test de Abreacción de la Creatividad (TAEC), antes y después de la experiencia.AbstractIn higher education, engineering and architecture degrees require the acquisition and development of skills such as creativity and spatial ability. Space competence can be developed by performing exercises and the creativity improves, if the design of the exercises allows multiple solutions. The understanding of topographic relief is necessary for the integration of architectural and engineering projects in the environment. However, in the university context deficiencies have been detected for the interpretation of the relief forms. Land models can help to fill this gap. The emergence of low cost digital manufacturing technologies allows the creation of terrain models and their incorporation for teaching. This article presents the results of two experiences. In the first one, carried out during the 2015-16 academic year with 33 university students, topographic models are made using stacked sections, with the aim of improving the three-dimensional interpretation of the terrain forms. The second part of the experience, performed during the 2016-17 course is carried out with Master's students. This is a preliminary validation, with few students, which seeks to incorporate creative aspects to the realization of land models. To measure the variation of creative competence in students, the Creativity Abreaction Test (TAEC) is used, before and after the experience.

Effect of Processing Parameters on Mechanical Properties of 3D Printed Samples

2018 ◽  
Vol 919 ◽  
pp. 230-235 ◽  
Author(s):  
Jaroslav Maloch ◽  
Eva Hnátková ◽  
Milan Žaludek ◽  
Petr Krátký
Keyword(s):  
Mechanical Properties ◽  
Low Cost ◽  
Flexural Modulus ◽  
Acrylonitrile Butadiene Styrene ◽  
Processing Parameters ◽  
Fused Deposition Modelling ◽  
Fused Deposition ◽  
3D Printed ◽  
Manufacturing Technologies ◽  
Functional Components

3D printing technology enables the production of functional components in small quantities which can be used as end-use parts. The mechanical properties of the final product define its quality and determine its success or failure in a given application. One at the various additive manufacturing technologies - Fused Deposition Modelling is very often used due to its relatively low cost and the availability of 3D printers and thermoplastic materials. During the process, there are many factors that can affect the mechanical properties of the final product. The temperature of the extrusion nozzle and the layer thickness are two of the basic process parameters. The objective of this work is to investigate the effect of these two processing parameters on the final mechanical properties of the 3D printed samples from acrylonitrile butadiene styrene. Mechanical testing includes the tensile and flexural strength, as well as tensile and flexural modulus.

scholarly journals Customized Fabrication Approach for Hypertrophic Scar Treatment: 3D Printed Fabric Silicone Composite

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Lung Chow ◽  
Kit-Lun Yick ◽  
Mei-Ying Kwan ◽  
Chun-Fai Yuen ◽  
Sun-Pui Ng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Three Dimensional ◽  
Adhesive Force ◽  
Digital Manufacturing ◽  
Pressure Therapy ◽  
Remarkable Improvement ◽  
Print Materials ◽  
3D Printed ◽  
Direct Digital Manufacturing ◽  
Manufacturing Technologies

Hypertrophic scars (HS) are considered to be the greatest unmet challenge in wound and burn rehabilitation. The most common treatment for HS is pressure therapy, but pressure garments may not be able to exert adequate pressure onto HS due to the complexity of the human body. However, the development of three-dimensional (3D) scanning and direct digital manufacturing technologies has facilitated the customized placement of additively manufactured silicone gel onto fabric as a component of the pressure therapy garment. This study provides an introduction on a novel and customized fabrication approach to treat HS and discusses the mechanical properties of 3D printed fabric reinforced with a silicone composite. For further demonstration of the suggested HS therapy with customized silicone insert, silicone inserts for the finger webs and HS were additively manufactured onto the fabric. Through the pressure evaluation by Pliance X system, it proved that silicone insert increases the pressure exerted to the HS. Moreover, the mechanical properties of the additively manufactured fabric silicone composites were characterized. The findings suggest that as compared with single viscosity print materials, the adhesive force of the additively manufactured silicone and fabric showed a remarkable improvement of 600% when print materials with different viscosities were applied onto elevated fabric

Pioneering Low-Cost 3D-Printed Transtibial Prosthetics to Serve a Rural Population in Sierra Leone

2020 ◽  
Author(s):  
Merel van der Stelt ◽  
Martin P. Grobusch ◽  
Abdul R. Koroma ◽  
Marco Papenburg ◽  
Ismaila Kebbie ◽  
...  
Keyword(s):  
Sierra Leone ◽  
Rural Population ◽  
Low Cost ◽  
3D Printed

scholarly journals UV Inscription and Pressure Induced Long-Period Gratings through 3D Printed Amplitude Masks

Sensors ◽  
2021 ◽  
Vol 21 (6) ◽  
pp. 1977
Author(s):  
Ricardo Oliveira ◽  
Liliana M. Sousa ◽  
Ana M. Rocha ◽  
Rogério Nogueira ◽  
Lúcia Bilro
Keyword(s):  
State Of The Art ◽  
Low Cost ◽  
Resonance Wavelength ◽  
Complex Structures ◽  
Pressing Method ◽  
Long Period ◽  
Long Period Gratings ◽  
3D Printed ◽  
Mechanical Pressing ◽  
First Time

In this work, we demonstrate for the first time the capability to inscribe long-period gratings (LPGs) with UV radiation using simple and low cost amplitude masks fabricated with a consumer grade 3D printer. The spectrum obtained for a grating with 690 µm period and 38 mm length presented good quality, showing sharp resonances (i.e., 3 dB bandwidth < 3 nm), low out-of-band loss (~0.2 dB), and dip losses up to 18 dB. Furthermore, the capability to select the resonance wavelength has been demonstrated using different amplitude mask periods. The customization of the masks makes it possible to fabricate gratings with complex structures. Additionally, the simplicity in 3D printing an amplitude mask solves the problem of the lack of amplitude masks on the market and avoids the use of high resolution motorized stages, as is the case of the point-by-point technique. Finally, the 3D printed masks were also used to induce LPGs using the mechanical pressing method. Due to the better resolution of these masks compared to ones described on the state of the art, we were able to induce gratings with higher quality, such as low out-of-band loss (0.6 dB), reduced spectral ripples, and narrow bandwidths (~3 nm).

scholarly journals BoSL FAL Pump: a small, low-cost, easily constructed, 3D-printed peristaltic pump for sampling of waters

HardwareX ◽  
2021 ◽  
pp. e00214
Author(s):  
David T. McCarthy ◽  
Baiqian Shi ◽  
Miao Wang ◽  
Stephen Catsamas
Keyword(s):  
Low Cost ◽  
Peristaltic Pump ◽  
3D Printed
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