Computational Study of Reinforcement Mechanisms of Cuttlefish Bone Inspired Structure for 3D Printing

2021 ◽  
Author(s):  
Brandon Bethers ◽  
Yang Yang
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Computational Study ◽  
High Energy ◽  
Simulation Software ◽  
Support Structures ◽  
Common Support ◽  
Potential Applications ◽  
Manufacturing Techniques ◽  
Traditional Manufacturing

Abstract Cuttlebone, the internal shell structure of a cuttlefish, presents a unique labyrinthian wall-septa design that promotes high energy absorption, porosity, and damage tolerance. This structure offers us an inspiration for the design of lightweight and strong structures for potential applications in mechanical, aerospace and biomedical engineering. However, the complexity of the cuttlebones structural design makes its fabrication by traditional manufacturing techniques not feasible. The advances in additive manufacturing (3D printing) make highly complex structures like cuttlebone possible to manufacture. In this work, the authors sought to establish comparative data between cuttlebone structures and some common support structures used in additive manufacturing. The structures compared to cuttlebone in this work include the cubic, honeycomb and triangular support structures. This was accomplished by using CAD modeling and simulation software. This study found that the cuttlefish structures had higher average stress values than the others but similar average strain values. This leads to a higher modulus of elasticity for the cuttlebone structures. The data suggests that further research into cuttlebone structures could produce future designs that improve upon the current well-established additive manufacturing support structures. Further study will be performed for the 3D printing of cuttlebone inspired structures by using various types of materials, such as soft and rigid polymers, functional ceramics, composites, and metals.

scholarly journals 3D Printing of Hierarchical Scaffolds Based on Mesoporous Bioactive Glasses (MBGs)—Fundamentals and Applications

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1688 ◽  
Author(s):  
Francesco Baino ◽  
Elisa Fiume
Keyword(s):  
Drug Delivery ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Three Dimensional ◽  
Clinical Applications ◽  
Ion Release ◽  
Bioactive Glasses ◽  
New Class ◽  
Potential Applications ◽  
Manufacturing Techniques

The advent of mesoporous bioactive glasses (MBGs) in applied bio-sciences led to the birth of a new class of nanostructured materials combining triple functionality, that is, bone-bonding capability, drug delivery and therapeutic ion release. However, the development of hierarchical three-dimensional (3D) scaffolds based on MBGs may be difficult due to some inherent drawbacks of MBGs (e.g., high brittleness) and technological challenges related to their fabrication in a multiscale porous form. For example, MBG-based scaffolds produced by conventional porogen-assisted methods exhibit a very low mechanical strength, making them unsuitable for clinical applications. The application of additive manufacturing techniques significantly improved the processing of these materials, making it easier preserving the textural and functional properties of MBGs and allowing stronger scaffolds to be produced. This review provides an overview of the major aspects relevant to 3D printing of MBGs, including technological issues and potential applications of final products in medicine.

scholarly journals Advances in 3D Printing for Tissue Engineering

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3149
Author(s):  
Angelika Zaszczyńska ◽  
Maryla Moczulska-Heljak ◽  
Arkadiusz Gradys ◽  
Paweł Sajkiewicz
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Complex Structure ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Scaffold Fabrication ◽  
Manufacturing Techniques ◽  
Printing Techniques ◽  
State Of Art

Tissue engineering (TE) scaffolds have enormous significance for the possibility of regeneration of complex tissue structures or even whole organs. Three-dimensional (3D) printing techniques allow fabricating TE scaffolds, having an extremely complex structure, in a repeatable and precise manner. Moreover, they enable the easy application of computer-assisted methods to TE scaffold design. The latest additive manufacturing techniques open up opportunities not otherwise available. This study aimed to summarize the state-of-art field of 3D printing techniques in applications for tissue engineering with a focus on the latest advancements. The following topics are discussed: systematics of the available 3D printing techniques applied for TE scaffold fabrication; overview of 3D printable biomaterials and advancements in 3D-printing-assisted tissue engineering.

scholarly journals Additive Manufacturing of Biopolymers for Tissue Engineering and Regenerative Medicine: An Overview, Potential Applications, Advancements, and Trends

2021 ◽  
Vol 2021 ◽  
pp. 1-20 ◽  
Author(s):  
Dhinakaran Veeman ◽  
M. Swapna Sai ◽  
P. Sureshkumar ◽  
T. Jagadeesha ◽  
L. Natrayan ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Regenerative Medicine ◽  
Tissue Regeneration ◽  
Three Dimensional ◽  
Porous Scaffolds ◽  
Wide Range ◽  
Potential Applications ◽  
Pharmaceutical Industries

As a technique of producing fabric engineering scaffolds, three-dimensional (3D) printing has tremendous possibilities. 3D printing applications are restricted to a wide range of biomaterials in the field of regenerative medicine and tissue engineering. Due to their biocompatibility, bioactiveness, and biodegradability, biopolymers such as collagen, alginate, silk fibroin, chitosan, alginate, cellulose, and starch are used in a variety of fields, including the food, biomedical, regeneration, agriculture, packaging, and pharmaceutical industries. The benefits of producing 3D-printed scaffolds are many, including the capacity to produce complicated geometries, porosity, and multicell coculture and to take growth factors into account. In particular, the additional production of biopolymers offers new options to produce 3D structures and materials with specialised patterns and properties. In the realm of tissue engineering and regenerative medicine (TERM), important progress has been accomplished; now, several state-of-the-art techniques are used to produce porous scaffolds for organ or tissue regeneration to be suited for tissue technology. Natural biopolymeric materials are often better suited for designing and manufacturing healing equipment than temporary implants and tissue regeneration materials owing to its appropriate properties and biocompatibility. The review focuses on the additive manufacturing of biopolymers with significant changes, advancements, trends, and developments in regenerative medicine and tissue engineering with potential applications.

scholarly journals 3D printing technologies for creating models and nozzles in an aerodynamic shock tunnel experiment

2021 ◽  
Vol 2103 (1) ◽  
pp. 012033
Author(s):  
M A Kotov ◽  
N A Monakhov ◽  
S A Poniaev ◽  
P A Popov ◽  
K V Tverdokhlebov
Keyword(s):  
3D Printing ◽  
High Speed ◽  
Additive Technologies ◽  
Structure And Properties ◽  
Dynamic Experiment ◽  
Advantages And Disadvantages ◽  
Nozzle Block ◽  
Rapid Prototyping And Manufacturing ◽  
Manufacturing Techniques ◽  
Traditional Manufacturing

Abstract The features of 3D printing method for rapid prototyping and manufacturing of models for a pulsed high-speed gas-dynamic experiment are considered. Modern additive technologies allow the production of models. The basic properties of the materials and the advantages of 3D printing methods are described. The structure and properties of the obtained models can be unattainable using traditional manufacturing techniques. The design of the wind tunnel nozzle block is considered, which provides for the production of profiled contours using 3D printing. The advantages and disadvantages of use of such units on the shock tube are considered.

Physico-Chemical Challenges in 3D Printing of Polymeric Nanocomposites and Hydrogels for Biomedical Applications

2021 ◽  
Vol 21 (5) ◽  
pp. 2778-2792
Author(s):  
Massimo Bonini
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Biomedical Applications ◽  
Nanocomposite Materials ◽  
Manufacturing Processes ◽  
Polymeric Nanocomposites ◽  
Physico Chemical ◽  
Polymeric Hydrogels ◽  
Manufacturing Techniques

Additive manufacturing techniques (i.e., 3D printing) are rapidly becoming one of the most popular methods for the preparation of materials to be employed in many different fields, including biomedical applications. The main reason is the unique flexibility resulting from both the method itself and the variety of starting materials, requiring the combination of multidisciplinary competencies for the optimization of the process. In particular, this is the case of additive manufacturing processes based on the extrusion or jetting of nanocomposite materials, where the unique properties of nanomaterials are combined with those of a flowing matrix. This contribution focuses on the physico-chemical challenges typically faced in the 3D printing of polymeric nanocomposites and polymeric hydrogels intended for biomedical applications. The strategies to overcome those challenges are outlined, together with the characterization approaches that could help the advance of the field.

scholarly journals Hybrid additive manufacturing of steels and alloys

2020 ◽  
Vol 7 ◽  
pp. 6
Author(s):  
Vladimir V. Popov ◽  
Alexander Fleisher
Keyword(s):  
Additive Manufacturing ◽  
Energy Deposition ◽  
Modern Trend ◽  
Production Chain ◽  
Direct Energy Deposition ◽  
Powder Bed ◽  
Direct Energy ◽  
Manufacturing Techniques ◽  
Traditional Manufacturing

Hybrid additive manufacturing is a relatively modern trend in the integration of different additive manufacturing techniques in the traditional manufacturing production chain. Here the AM-technique is used for producing a part on another substrate part, that is manufactured by traditional manufacturing like casting or milling. Such beneficial combination of additive and traditional manufacturing helps to overcome well-known issues, like limited maximum build size, low production rate, insufficient accuracy, and surface roughness. The current paper is devoted to the classification of different approaches in the hybrid additive manufacturing of steel components. Additional discussion is related to the benefits of Powder Bed Fusion (PBF) and Direct Energy Deposition (DED) approaches for hybrid additive manufacturing of steel components.

scholarly journals The 3D printing in industrial design

Mechanik ◽  
2020 ◽  
Vol 93 (1) ◽  
pp. 21-26
Author(s):  
Stanisław Adamczak ◽  
Marcin Graba
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Design Process ◽  
Industrial Design ◽  
New Products ◽  
Engineering Studies ◽  
Technical Drawing ◽  
Manufacturing Techniques ◽  
Standard Techniques

Industrial design is an interdisciplinary activity leading to the development of new products that can be successfully launched on the market. Generally, the term industrial design is understood as the design process leading to the determination of various features of the industrial form. For many years, design was practiced using standard techniques such as sketch, presentation drawing, technical drawing, and mockups. However, the development of additive manufacturing techniques meant that an indispensable element in the industrial design is 3D printing, which allows to quickly create a prototype, a model of the designed detail. In this paper, on the example of engineering studies in the field of industrial design, the use of 3D printing in the process of design will be shown.

scholarly journals 3D printers in dentistry: a review of additive manufacturing techniques and materials

2021 ◽  
Author(s):  
Leonardo Portilha Gomes da Costa ◽  
Stephanie Isabel Díaz Zamalloa ◽  
Fernando Amorim Mendonça Alves ◽  
Renan Spigolon ◽  
Leandro Yukio Mano ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Fused Deposition Modeling ◽  
Dental Materials ◽  
Clinical Results ◽  
Digital Light Processing ◽  
Fused Deposition ◽  
3D Printers ◽  
Manufacturing Techniques ◽  
Printed Materials

3D printers manufacture objects used in various dental specialties. Objective: This literature review aims to explore different techniques of current 3D printers and their applications in printed materials for dental purposes. Methods: The online PubMed databases were searched aiming to find applications of different 3D printers in the dental area. The keywords searched were 3D printer, 3D printing, additive manufacturing, rapid prototyping, 3D prototyping, dental materials and dentistry. Results: From the search results, we describe Stereolithography (SLA), Digital Light Processing (DLP), Material Jetting (MJ), Fused Deposition Modeling (FDM), Binder Jetting (BJ) and Dust-based printing techniques. Conclusion: 3D printing enables different additive manufacturing techniques to be used in dentistry, providing better workflows and more satisfying clinical results.

scholarly journals Recycled Tire Rubber in Additive Manufacturing: Selective Laser Sintering for Polymer-Ground Rubber Composites

2021 ◽  
Vol 11 (18) ◽  
pp. 8778
Author(s):  
Antoniya Toncheva ◽  
Loïc Brison ◽  
Philippe Dubois ◽  
Fouad Laoutid
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Thermoplastic Polyurethane ◽  
Selective Laser Sintering ◽  
Morphological Characteristics ◽  
Laser Sintering ◽  
Industrial Applications ◽  
Tire Rubber ◽  
Abrasive Resistance ◽  
Potential Applications

Natural and synthetic rubber is gaining increased interest in various industrial applications and daily life sectors (automotive industry, acoustic and electrical isolators, adhesives, impermeable surfaces, and others) due to its remarkable physicomechanical properties, excellent durability, and abrasive resistance. These great characteristics are accompanied by some recycling difficulties of the final products, particularly originated from the tire waste rubber industry. In this study, recycled tire rubber was incorporated in polymer matrices using selective laser sintering as 3D printing technology. Two polymers were used-polyamide and thermoplastic polyurethane, for their rigid and elastomeric properties, respectively. Polymer composites containing various tire powder amounts, up to 40 wt.%, were prepared by physical blending. The final materials’ morphological characteristics, mechanical properties, and thermal stability were evaluated. The proposed ambitious additive manufacturing approach looked over also some of the major aspects to be considered during the 3D printing procedure. In addition, examples of printed prototypes with potential applications were also proposed revealing the potential of the recycled tire rubber-loaded composites.

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