scholarly journals Designing a Badminton Shuttlecock; Validation of Virtual Design by 3D Printed Thin-Walled Functional Prototype

2014 ◽  
Author(s):  
C. S. H. Lin ◽  
C. K. Chua ◽  
J. H. Yeo
Keyword(s):  
Virtual Design ◽  
3D Printed ◽  
Thin Walled ◽  
Functional Prototype

Quasi-static and dynamic crush behaviour of 3D printed thin-walled profiles reinforced with continuous carbon and glass fibres

2021 ◽  
Vol 217 ◽  
pp. 108865
Author(s):  
U. Morales ◽  
A. Esnaola ◽  
M. Iragi ◽  
L. Aretxabaleta ◽  
J. Aurrekoetxea
Keyword(s):  
Glass Fibres ◽  
3D Printed ◽  
Thin Walled

scholarly journals Multi-Material 3D Printing of a Customized Sports Mouth Guard: Proof-of-Concept Clinical Case

2021 ◽  
Vol 18 (23) ◽  
pp. 12762
Author(s):  
Alexey Unkovskiy ◽  
Fabian Huettig ◽  
Pablo Kraemer-Fernandez ◽  
Sebastian Spintzyk
Keyword(s):  
3D Printing ◽  
Free Form ◽  
Proof Of Concept ◽  
Virtual Design ◽  
Digital Workflow ◽  
Protective Function ◽  
Drop On Demand ◽  
3D Printed ◽  
Mouth Guards ◽  
Protective Performance

A multilayer mouth guard is known to have the best protective performance. However, its manufacturing in a digital workflow may be challenging with regards to virtual design and materialization. The present case demonstrates a pathway to fabricate a multilayer individualized mouth guard in a fully digital workflow, which starts with intraoral scanning. A free-form CAD software was used for the virtual design. Two various CAM techniques were used, including Polyjet 3D printing of rubber-like soft material and silicone printing using Drop-on-Demand technique. For both methods the outer layer was manufactured from more rigid materials to facilitate its protective function; the inner layer was printed from a softer material to aid a better adaptation to mucosa and teeth. Both 3D printed multilayer mouth guards showed a clinically acceptable fit and were met with patient appraisal. Their protective capacities must be evaluated in further clinical studies.

Progressive collapse behaviors and mechanisms of 3D printed thin-walled composite structures under multi-conditional loading

2022 ◽  
Vol 171 ◽  
pp. 108810
Author(s):  
Jin Wang ◽  
Yisen Liu ◽  
Kui Wang ◽  
Song Yao ◽  
Yong Peng ◽  
...  
Keyword(s):  
Composite Structures ◽  
Progressive Collapse ◽  
3D Printed ◽  
Thin Walled

scholarly journals Assessment of the reproducibility and precision of milling and 3D printing surgical guides

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Sueli Mukai ◽  
Eduardo Mukai ◽  
José Arnaldo Santos-Junior ◽  
Jamil Awad Shibli ◽  
Marcelo Faveri ◽  
...  
Keyword(s):  
3D Printing ◽  
Virtual Model ◽  
Virtual Design ◽  
Surgical Guides ◽  
Technology Advancement ◽  
Significant Difference ◽  
Kolmogorov Smirnov ◽  
3D Printed ◽  
Test For Normality ◽  
Smirnov Test

Abstract Background Technology advancement has rising in the past decade and brought several innovations and improvements. In dentistry, this advances provided more comfortable and quick procedures to both the patient and the dental surgeon, generating less predictability in the final result. Several techniques has been developed for the preparation of surgical guides aiming at the optimization of surgical procedures. The present study aimed to evaluate the reproducibility and precision of two types of surgical guides obtained using 3D printing and milling methods. Methods A virtual model was developed that allowed the virtual design of milled (n = 10) or 3D printed (n = 10) surgical guides. The surgical guides were digitally oriented and overlapped on the virtual model. For the milling guides, the Sirona Dentsply system was used, while the 3D printing guides were produced using EnvisionTEC’s Perfactory P4K Life Series 3D printer and E-Guide Tint, a biocompatible Class I certified material. The precision and trueness of each group during overlap were assessed. The data were analyzed with GraphPad software using the Kolmogorov–Smirnov test for normality and Student’s t test for the variables. Results The Kolmogorov–Smirnov test showed a normal distribution of the data. Comparisons between groups showed no statistically significant differences for trueness (p = 0.529) or precision (p = 0.3021). However, a significant difference was observed in the standard deviation of mismatches regarding accuracy from the master model (p < 0.0001). Conclusions Within the limits of this study, surgical guides fabricated by milling or prototyped processes achieved similar results.

Design and Fabrication of a Thin-Walled Free-Form Scaffold on the Basis of Medical Image Data and a 3D Printed Template: Its Potential Use in Bile Duct Regeneration

2017 ◽  
Vol 9 (14) ◽  
pp. 12290-12298 ◽  
Author(s):  
Suk-Hee Park ◽  
Bo-Kyeong Kang ◽  
Ji Eun Lee ◽  
Seung Woo Chun ◽  
Kiseok Jang ◽  
...  
Keyword(s):  
Bile Duct ◽  
Medical Image ◽  
Image Data ◽  
Free Form ◽  
3D Printed ◽  
Thin Walled ◽  
Medical Image Data ◽  
Potential Use

scholarly journals Accessing axis : exploring design coginition from visual and haptic experiences as an apparel designer in digital 3d imaging using 3d printing technology

2015 ◽  
Author(s):  
◽  
Lushan Sun
Keyword(s):  
3D Printing ◽  
Design Process ◽  
Digital Fabrication ◽  
Apparel Design ◽  
Virtual Design ◽  
Printing Technology ◽  
3D Printing Technology ◽  
3D Cad ◽  
Hands On ◽  
3D Printed

Despite the rise of 3D printing technology in recent years, the novel technology has not yet heavily expanded to the realm of textile and apparel design. Although 3D printed design explorations have been unique and successful, the information shared only pertains to unique garment silhouettes or materials applied as oppose the insights into the specific 3D CAD process, which is the core of such digital fabrication methods. Following the Mutual Shaping of Technology framework, this study zoomed in on the ways for traditional apparel designers transition into the digital 3D modeling process from the visual and haptic cognitive aspects. This investigation involved a focus group study with 10 participants who are 3D CAD practitioners with hands-on object making backgrounds. The group study outcomes further contributed to the strategy that was then utilized in an independent case study involving studio practice and the development of a 3D printed wearable garment. The results from this exploratory study suggest that the transition from hands-on to digital modeling is a rather challenging process and relies heavily on tacit knowledge and the combination of object and spatial visualization skills interpreted in the forms of visual and haptic memory in order to develop an efficient workflow in the digital design process. The findings of this study are of great value in understanding the cognitive nature of the apparel designer's virtual design process in order to reflect on the current design curriculum. This study also is of importance to the future 3D CAD program interface design for both apparel and non-apparel design practice.

scholarly journals Inkjet 3D Printed MEMS Vibrational Electromagnetic Energy Harvester

Energies ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2800 ◽  
Author(s):  
Bartosz Kawa ◽  
Krzysztof Śliwa ◽  
Vincent Lee ◽  
Qiongfeng Shi ◽  
Rafał Walczak
Keyword(s):  
3D Printing ◽  
Permanent Magnet ◽  
Output Power ◽  
Energy Harvester ◽  
Three Dimensional ◽  
Virtual Design ◽  
Resonant Frequencies ◽  
Hybrid Energy ◽  
Electromechanical Energy ◽  
3D Printed

Three-dimensional (3D) printing is a powerful tool that enables the printing of almost unlimited geometry in a few hours, from a virtual design to a real structure. In this paper, we present a micro-electromechanical energy harvester that utilized a 3D printed micromechanical structure combined with a miniature permanent magnet and a microelectronic coil towards a hybrid electromagnetic vibrational hybrid energy harvester. Various micromechanical structure geometries were designed, printed, and tested. The characteristic dimensions of the springs were from 200 μm to 400 μm and the total volume of the devices was below 1 cm3. The resonant frequencies (95–340 Hz range), as well as bandwidths (6–23 Hz range), for the developed prototypes were determined. The maximal generated output power was almost 24 μW with a power density up to almost 600 μW/cm3.

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