Programmable 4D-Printed Responsive Structures

2020 ◽  
Vol 856 ◽  
pp. 317-322
Author(s):  
Sunanta Chuayprakong ◽  
Araya Wanamonkol ◽  
Manuschaya Khayandee
Keyword(s):  
3D Printing ◽  
3D Printer ◽  
Syringe Pump ◽  
4D Printing ◽  
Printing Technology ◽  
Change Over Time ◽  
Crosslinked Polymer ◽  
Gel Fraction ◽  
Over Time

4D-printing has been emerged and developed from 3D-printing. The 4D-printing technology creates sophisticated structures in which can change over time to perform programmed functions. In this research, simply programmable 4D-printed responsive structures were designed, prepared and studied. The designed structures are influentially inspired by creatures and the customized 3D-printer was used. Magnetic crosslinked PVA was prepared and used as programmable 4D-printed responsive samples. Effect of PVA concentration on gel fraction was elucidated for the prepared crosslinked PVA. Fe3O4 particles were incorporated to the crosslinked polymer before manufacturing. Effect of speed of platform and effect of rate of syringe pump on the 4D-printed magnetic crosslinked PVA structure were investigated. Furthermore, the responsive property of the magnetic crosslinked PVA was determined.

scholarly journals Review of Polymeric Materials in 4D Printing Biomedical Applications

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1864 ◽  
Author(s):  
Ming-You Shie ◽  
Yu-Fang Shen ◽  
Suryani Dyah Astuti ◽  
Alvin Kai-Xing Lee ◽  
Shu-Hsien Lin ◽  
...  
Keyword(s):  
3D Printing ◽  
Smart Materials ◽  
Biomedical Applications ◽  
Polymeric Materials ◽  
3D Printer ◽  
Future Prospects ◽  
4D Printing ◽  
Current Application ◽  
3D Printed ◽  
Over Time

The purpose of 4D printing is to embed a product design into a deformable smart material using a traditional 3D printer. The 3D printed object can be assembled or transformed into intended designs by applying certain conditions or forms of stimulation such as temperature, pressure, humidity, pH, wind, or light. Simply put, 4D printing is a continuum of 3D printing technology that is now able to print objects which change over time. In previous studies, many smart materials were shown to have 4D printing characteristics. In this paper, we specifically review the current application, respective activation methods, characteristics, and future prospects of various polymeric materials in 4D printing, which are expected to contribute to the development of 4D printing polymeric materials and technology.

scholarly journals Biotechnology Anticipates 4D Printing

2020 ◽  
Vol 142 (04) ◽  
pp. 30-35
Author(s):  
John Kosowatz
Keyword(s):  
3D Printing ◽  
Supply Chains ◽  
Advanced Manufacturing ◽  
Layer By Layer ◽  
4D Printing ◽  
Change Over Time ◽  
Layer Manufacturing ◽  
Manufacturing Applications ◽  
Printing Techniques ◽  
Over Time

Abstract Rapid advancements in 3D printing that have fueled the development of advanced manufacturing applications are well-known. New printing techniques and their ability to print objects from a growing variety of materials such as plastics, metals, ceramics, and more allow developers and manufacturers to speed prototyping, streamline supply chains, and produce complex designs not previously possible. Even so, there are limits to what can be done because the materials are rigid. This article explores if 4D printing, the layer-by-layer manufacturing of parts that can change over time, is the next step.

scholarly journals A Novel Method for Precise Guided Hole Fabrication of Dental Implant Surgical Guide Fabricated with 3D Printing Technology

2020 ◽  
Vol 11 (1) ◽  
pp. 49
Author(s):  
Keunbada Son ◽  
Kyu-Bok Lee
Keyword(s):  
3D Printing ◽  
Dental Implant ◽  
Present Report ◽  
Free Software ◽  
3D Printer ◽  
Printing Technology ◽  
Surgical Guide ◽  
3 Dimensional ◽  
3D Printing Technology ◽  
Novel Method

A dental implant surgical guide fabricated by 3-dimensional (3D) printing technology is widely used in clinical practice due to its convenience and fast fabrication. However, the 3D printing technology produces an incorrect guide hole due to the shrinkage of the resin materials, and in order to solve this, the guide hole is adjusted using a trimmer or a metal sleeve is attached to the guide hole. These methods can lead to another inaccuracy. The present method reports a technique to compensate for a decreased guide hole caused by shrinkage that can occur when a computer-guided implant surgical guide is fabricated with a 3D printer. The present report describes a technique to adjust the size of the guide hole using a free software program to identify the optimized guide hole size that is fabricated with the 3D printer.

scholarly journals Developement of 3D printer for silicate-based materials

2020 ◽  
Vol 2 (SI2) ◽  
pp. First
Author(s):  
Can Chi Trieu ◽  
Minh-Thien Nguyen ◽  
Thien-Toan Quan Le ◽  
Manh-Quyen Dam ◽  
Anh-Tu Tran ◽  
...  
Keyword(s):  
3D Printing ◽  
Manufacturing Industry ◽  
3D Printer ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Frame Element ◽  
Key Factor ◽  
Stepper Motors ◽  
Mach 3 ◽  
Near Future

3D printer and 3D printing technology are now considered as one of the key factor in the manufacturing industry. In the near future, we could envisage different application of 3D printing method in the sector of materials processing and production. In the sector of civil engineering, they existed somewhere some construction works developed with 3D printing technology.  In this study, we aim to manufacture laboratory-scale printers with nozzles and extrusion feeding systems suitable for paste such as the case of clay-based materials of silicate industry. The movement system was encoded and controlled via the motherboard (Mach 3 controller software). Stepper motors and shaft drives were also implemented in the frame element of such printer. The feeding system was designed based on the extrusion method including cylinder and piston element. Based on that, sample size 200x300x300mm was available for operation testing. Concerning the performance of the instrument, we have obtained printed specimens with different geometric shapes with complexity. From the obtained result, we also discussion on the feasibility up scaling the study and developing a 3D printer for silicate based materials.

The FDM 3D Printing Application for Orthopedic Splints

2015 ◽  
Vol 809-810 ◽  
pp. 375-380 ◽  
Author(s):  
Adriana Munteanu ◽  
Dragos Chitariu ◽  
Florentin Cioata
Keyword(s):  
3D Printing ◽  
High Precision ◽  
Conceptual Models ◽  
3D Printer ◽  
Functional Testing ◽  
Printing Technology ◽  
Hand Prosthesis ◽  
Engineering Models ◽  
Easy Solution

The FDM technology is an easy solution when someone need freedom of design but with a high precision of manufacturing and so, one can built conceptual models or molds, engineering models, manufacturing tools, and functional testing prototypes. The problem addressed in this paper is to identify and investigate the possibility of design and the achieving sustainability of a temporary hand prosthesis used for supporting and immobilizing a broken bone. The research tries to highlight some common and distinct aspects specific to FDM printing technology. One of the objectives of this paper is to use the FDM technology in order to achieve a modern version of the classics splints or of the orthopedic cast. The prototype models proposed can be made vertically on a 3D printer with small motherboard and are easy to wear, attractive to children through its colors and can be made with a manufacturing low price.

scholarly journals Attempts to Diminish the Drawbacks of Polylactic Acid Designed for 3D/4D Printing Technology-Fused Deposition Modeling

2021 ◽  
Vol 58 (1) ◽  
pp. 142-153
Author(s):  
Doina Dimonie ◽  
Nicoleta Dragomir ◽  
Rusandica Stoica
Keyword(s):  
3D Printing ◽  
Polylactic Acid ◽  
Fused Deposition Modeling ◽  
New Materials ◽  
4D Printing ◽  
Printing Technology ◽  
Fused Deposition ◽  
New Material ◽  
Deposition Modeling ◽  
Laboratory Line

In order to improve thermal behavior and dimensional strability of polylactic acid (PLA) designed both for 3D and 4D printing technology-fused deposition modeling (FDM) using a scalable procedure, the polymer was melt compounded with additives which control the morphology by crystallization and/or reinforcing. Using the formulations which provide polylactic acid (PLA) improved thermo-mechanical properties and desired dimensional stability, the new materials were shaped, on a laboratory line, as filaments for printing technology. The selected compounds were than scaled up on a 50 kg/h compounding line into granules which prove to have good shapability as filaments for printing technology (1.85 +/- 0.05 mm diameter, required ovality, good appearance and smooth surface) and performed properly at 3D printing. The obtained results proved that functional properties of PLA can be improved by various methods so that, depending on the reached performances, the new material can be converted through printing technology into items for performance applications. The novelty of the article is related to the fact that it identifies a modifying solution for controlling the morphology of a type of PLA designed for 3D printing that already has an advanced crystallinity.

Exploring Smart Material Applications for COVID-19 Pandemic Using 4D Printing Technology

2020 ◽  
Vol 05 (04) ◽  
pp. 481-494
Author(s):  
Mohd Javaid ◽  
Abid Haleem
Keyword(s):  
3D Printing ◽  
Smart Materials ◽  
Smart Material ◽  
Layer By Layer ◽  
4D Printing ◽  
Medical Field ◽  
Additional Element ◽  
Printing Technology ◽  
Innovative Solutions ◽  
Printing Processes

Today, in the medical field, innovative technological advancements support healthcare systems and improve patients’ lives. 4D printing is one of the innovative technologies that creates notable innovations in the medical field. For the COVID-19 pandemic, this technology proves to be useful in the manufacturing of smart medical parts, which helps treat infected patients. As compared to 3D printing, 4D printing adds time as an additional element in the manufactured part. 4D printing uses smart materials with the same printing processes as being used in 3D printing technology, but here the part printed with smart materials change their shape with time or by the change of environmental temperature, which further creates innovation for patient treatments. 4D printing manufactures a given part, layer by layer, by taking input of a virtual (CAD) model and uses smart material. This paper studies the capability of smart materials and their advancements when used in 4D printing. We have diagrammatically presented the significant parts of 4D printing technology. This paper identifies 11 significant applications of 4D printing and then studies which one provides innovative solutions during the COVID-19 pandemic.

scholarly journals Investigation of layer height influencing the impact strength of polylactic acid (PLA)

2021 ◽  
Vol 15 (2) ◽  
pp. 76-83
Author(s):  
József Richárd Lennert ◽  
József Sárosi
Keyword(s):  
Mechanical Property ◽  
3D Printing ◽  
Impact Strength ◽  
Basic Material ◽  
3D Printer ◽  
Printing Technology ◽  
Layer Height ◽  
The Impact ◽  
Influential Parameters ◽  
Printing Time

The aim of this study is to investigate the effect of layer height used during 3D printing on the impact strength, their standard deviations, and the printing time by using UNI EN ISO 180 unnotched specimens manufactured by FDM 3D printing technology. Every specimen is made of PLA, which is the most basic material of the FDM printing technology by using the same 3D printer. In this study it plays a key role to find out whether the layer height can be used to optimize the researched mechanical property within an economical framework or not. What is more, the possibly observable tendencies and crucial influential parameters will be analysed as well.

scholarly journals Studying, designing and 3d-printing an operational model of the Antikythera Mechanism

2019 ◽  
Vol 1 (3) ◽  
pp. 70 ◽  
Author(s):  
Georgios Mavromanolakis ◽  
T Manousos ◽  
M Kechri ◽  
P. L. Kollia ◽  
G Kanellopoulos
Keyword(s):  
High School Students ◽  
3D Printing ◽  
Science Classroom ◽  
School Setting ◽  
3D Printer ◽  
Greek Language ◽  
School Students ◽  
Operational Model ◽  
Printing Technology ◽  
3D Printing Technology

3D printing technology is an established industrial practice for rapid prototyping and manufacturing across a range of products, components and commercial sectors and at the same time possesses great potential for every-day life applications to be invented, explored and developed by the coming generations of scientists and engineers. A 3D printer installed in a school setting and complemented by well-designed educational activities can: stimulate the interest and curiosity of students; engage and motivate them into studying science, technology, engineering and mathematics (STEM) subjects, that they may choose or consider as career options; give the opportunity to teachers to achieve content and concept learning in an innovative way. In this paper we present an interdisciplinary science course that was developed for high school students and was implemented in an actual science classroom. The objectives of the course were both to spark the interest and creativity of students and teach them certain curriculum units the content knowledge of which is reached or utilized in an unconventional way. Students are gradually introduced into the 3D printing technology, its application and potential and are assigned a challenging collaborative project in which they have to study, analyse, design and build, using the 3D printer of their school, an operational model of a renown ancient artefact, the so-called Antikythera Mechanism. The mechanism is a 2100-year-old computer and is internationally known as an artefact of unprecedented human ingenuity and scientific, historic and symbolic value. The course involves the teaching of STEM curriculum domains of physics, astronomy, mathematics/geometry, informatics and technology related content and also non-STEM subjects like history and Greek language, both ancient and modern. We give an overview of the course, discuss its various phases and highlight its outcomes.

Sign in / Sign up

Export Citation Format

Share Document