scholarly journals Development of a computer-aided engineering–supported process for the manufacturing of customized orthopaedic devices by three-dimensional printing onto textile surfaces

2020 ◽  
Vol 15 ◽  
pp. 155892502091762
Author(s):  
Dustin Ahrendt ◽  
Arturo Romero Karam
Keyword(s):  
Three Dimensional ◽  
Computer Aided Engineering ◽  
Two Dimensional ◽  
Three Dimensional Printing ◽  
Textile Materials ◽  
Fused Deposition ◽  
Custom Made ◽  
Computer Aided ◽  
Dimensional Printing ◽  
Textile Fabric

Today, additive manufacturing, also called three-dimensional printing, is used for producing prototypes as well as other products for various industrial sectors. Although this technology is already well established in the automotive, aviation and space travel, building, dental and medical sectors, its integration in the textile and ready-made industry is still in progress. At present, there is a lack of specific application scenarios for the combination of three-dimensional printing and textile materials, apart from fashion and shoe design. Hence, this article presents a digital computer-aided engineering–supported process to manufacture customized orthopaedic devices by three-dimensional printing directly onto a textile fabric. State-of-the-art fabrication methods for orthoses are typically labour intensive. The combination of three-dimensional scanning, computer-aided design modelling and three-dimensional printing onto textile materials open up new possibilities for producing custom-made products. After three-dimensional scanning of a patient’s individual body shape, the surface is prepared for constructing the textile pattern cuts by reverse engineering. The transformation of the designed three-dimensional patterns into two-dimensional is software supported. Additional positioning lines in accordance with specific body measurements are transferred onto the two-dimensional pattern cuts, which are then used as the basis for the design of the three-dimensional printed functional elements. Subsequently, the design is saved in STL (Standard Triangulation/Tessellation Language) file format, prepared by slicing and directly printed onto textile pattern cuts by means of fused deposition modelling. The last manufacturing step involves the assembly of the textile fabric. The proposed process is demonstrated by an example application scenario, thus proving its potential for industrial use in the textile and ready-made industry.

Cotton-containing printing wires based on the two-dimensional braiding method for three-dimensional printing of clothing

2021 ◽  
pp. 004051752110592
Author(s):  
Meng-jie Wu ◽  
Chao Zhi ◽  
Li Tu ◽  
Yong-zhen Wang ◽  
Yang Dai ◽  
...  
Keyword(s):  
3D Printing ◽  
Thermoplastic Polyurethane ◽  
Three Dimensional ◽  
Acrylonitrile Butadiene Styrene ◽  
Two Dimensional ◽  
Three Dimensional Printing ◽  
Textile Materials ◽  
Fused Deposition ◽  
3D Printed ◽  
Dimensional Printing

There is a large somatosensory gap between the three-dimensional (3D) printing of clothing and traditional garments due to the limitations (e.g., air permeability and skin-friendliness) of the printing materials. For this reason, the application of traditional textile materials in 3D printing has become a hot topic in the field of 3D printed clothing. Based on the above, this work prepared four kinds of cotton-containing composite solutions and then impregnated thermoplastic polyurethane core yarns in these solutions to obtain four types of 3D printed cotton-containing composite core yarns (3Dp-C-CYs). Afterward, based on the two-dimensional (2D) braiding method, four kinds of cotton-containing 3D printing wires used for fused deposition molding technology were prepared by wrapping low-melting polyester filaments around the different 3Dp-C-CYs. After comparing the printing performance of the four cotton-containing 3D printing wires, the wire containing cotton powders had the best comprehensive performance and was selected to print the cotton-containing 3D printed fabrics. The results showed that the cotton-containing 3D printed fabric has good flatness and contains a large number of cotton powders; in addition, compared with the traditional polylactic acid and acrylonitrile butadiene styrene copolymer 3D printed fabrics, the 3D printed fabric made up of cotton-containing 3D printing wire can provide a closer wearing experience to that of cotton fabric. The 3D printing wire produced by the 2D braiding method offers a new idea for applying traditional textile materials in 3D printing, showing great application potentials in the field of 3D printing of clothing.

Custom design of furniture elements by fused filament fabrication

2016 ◽  
Vol 231 (1) ◽  
pp. 88-95 ◽  
Author(s):  
Nenad Grujovic ◽  
Fatima Zivic ◽  
Miroslav Zivkovic ◽  
Milan Sljivic ◽  
Andreja Radovanovic ◽  
...  
Keyword(s):  
Fused Deposition Modeling ◽  
Low Cost ◽  
Three Dimensional ◽  
Wood Industry ◽  
Three Dimensional Printing ◽  
Modeling Technology ◽  
Fused Deposition ◽  
Custom Made ◽  
Deposition Modeling ◽  
Dimensional Printing

Additive manufacturing technologies enable rapid prototyping of different parts, according to the three-dimensional model software solution. This paper presents some aspects of fused deposition modeling technology and its application in the wood industry. The fused deposition modeling technology was initially developed for three-dimensional printing of plastic parts, whereas acrylonitrile butadiene styrene and polylactic acid plastics filament are commonly applied. Possibilities for application of different composites with fused deposition modeling in the wood industry are reviewed and presented in this paper. Several industrial applications were considered also, from aspects of material durability, mechanical strength, low cost, and customization. Directions of further research have been discussed, considering graphene and carbon nanotubes as composite reinforcement materials and bio-organic composites with wooden particles or fibers mixed into the polymer matrix. Development of new composites for use with the fused deposition modeling technology is promising area taking into account that new low-cost extruders are already commercially available, as a support to fused deposition modeling device. Three-dimensional printing is very convenient for investigation of different custom-made composite materials, as well as custom shapes of final parts, starting from powders, their mixing, drawing of composite material filament, which are further used for three-dimensional printing with solidification and fabrication of custom-made products. New composites for fused deposition modeling, made of wood and plastic combinations were experimentally investigated for use as functional and customized elements of furniture. Obtained results strongly indicated that both new composite materials and fused deposition modeling printing can be efficiently used for broad customization from aspects of material properties and product shapes, thus enabling low-cost fabrication of small series of complex furniture elements, especially fixtures or clamp tools.

scholarly journals Influence of the Infill Geometry of 3D-Printed Tablets on Drug Dissolution

2021 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Nuno Venâncio ◽  
Gabriela G. Pereira ◽  
João F. Pinto ◽  
Ana I. Fernandes
Keyword(s):  
Three Dimensional ◽  
Drug Dissolution ◽  
Fused Deposition Modelling ◽  
Three Dimensional Printing ◽  
Preliminary Results ◽  
Fused Deposition ◽  
3D Printed ◽  
Dimensional Printing ◽  
Hot Melt ◽  
Patient Centric

Patient-centric therapy is especially important in pediatrics and may be attained by three-dimensional printing. Filaments containing 30% w/w of theophylline were produced by hot-melt extrusion and printed using fused deposition modelling to produce tablets. Here, preliminary results evaluating the effect of infill geometry (cross, star, grid) on drug content and release are reported.

scholarly journals Transfiguring Healthcare: Three-Dimensional Printing in Pharmaceutical Sciences; Trends during COVID-19: A Review

2021 ◽  
pp. 207-218
Author(s):  
K. G. Siree ◽  
T. M. Amulya ◽  
T. M. Pramod Kumar ◽  
S. Sowmya ◽  
K. Divith ◽  
...  
Keyword(s):  
3D Printing ◽  
Medical Devices ◽  
Three Dimensional ◽  
Pharmaceutical Sciences ◽  
Three Dimensional Printing ◽  
Custom Made ◽  
High Degree ◽  
The Impact ◽  
Dimensional Printing ◽  
Shed Light

Three-dimensional (3D) printing is a unique technique that allows for a high degree of customisation in pharmacy, dentistry and in designing of medical devices. 3D printing satiates the increasing exigency for consumer personalisation in these fields as custom-made medicines catering to the patients’ requirements are novel advancements in drug therapy. Current research in 3D printing indicates towards reproducing an organ in the form of a chip; paving the way for more studies and opportunities to perfecting the existing technique. In addition, we will also attempt to shed light on the impact of 3D printing in the COVID-19 pandemic.

scholarly journals 3D-Printed Soft Structure of Polyurethane and Magnetorheological Fluid: A Proof-of-Concept Investigation of its Stiffness Tunability

Micromachines ◽  
2019 ◽  
Vol 10 (10) ◽  
pp. 655 ◽  
Author(s):  
Seong-Woo Hong ◽  
Ji-Young Yoon ◽  
Seong-Hwan Kim ◽  
Sun-Kon Lee ◽  
Yong-Rae Kim ◽  
...  
Keyword(s):  
Fused Deposition Modeling ◽  
Permanent Magnets ◽  
Thermoplastic Polyurethane ◽  
Three Dimensional ◽  
Magnetorheological Fluid ◽  
Three Dimensional Printing ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
3D Printed ◽  
Dimensional Printing

In this study, a soft structure with its stiffness tunable by an external field is proposed. The proposed soft beam structure consists of a skin structure with channels filled with a magnetorheological fluid (MRF). Two specimens of the soft structure are fabricated by three-dimensional printing and fused deposition modeling. In the fabrication, a nozzle is used to obtain channels in the skin of the thermoplastic polyurethane, while another nozzle is used to fill MRF in the channels. The specimens are tested by using a universal tensile machine to evaluate the relationships between the load and deflection under two different conditions, without and with permanent magnets. It is empirically shown that the stiffness of the proposed soft structure can be altered by activating the magnetic field.

Denture flask fabrication using fused deposition modeling three-dimensional printing

2020 ◽  
Vol 64 (2) ◽  
pp. 231-234 ◽  
Author(s):  
Heechul Kim ◽  
Doyun Lee ◽  
Soo Young Lee ◽  
Hongso Yang ◽  
Sang-Won Park ◽  
...  
Keyword(s):  
Fused Deposition Modeling ◽  
Three Dimensional ◽  
Three Dimensional Printing ◽  
Fused Deposition ◽  
Deposition Modeling ◽  
Dimensional Printing
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