scholarly journals 3D printing of high‐strength, porous, elastomeric structures to promote tissue integration of implants

2020 ◽  
Vol 109 (1) ◽  
pp. 54-63
Author(s):  
Bijan Abar ◽  
Alejandro Alonso‐Calleja ◽  
Alexander Kelly ◽  
Cambre Kelly ◽  
Ken Gall ◽  
...  
Keyword(s):  
3D Printing ◽  
High Strength ◽  
Tissue Integration

Direct 3D Printing of High Strength Biohybrid Gradient Hydrogel Scaffolds for Efficient Repair of Osteochondral Defect

2018 ◽  
Vol 28 (13) ◽  
pp. 1706644 ◽  
Author(s):  
Fei Gao ◽  
Ziyang Xu ◽  
Qingfei Liang ◽  
Bo Liu ◽  
Haofei Li ◽  
...  
Keyword(s):  
3D Printing ◽  
Osteochondral Defect ◽  
High Strength ◽  
Hydrogel Scaffolds

High-strength epoxy nanocomposites for 3D printing

2018 ◽  
Vol 160 ◽  
pp. 9-20 ◽  
Author(s):  
Nadim S. Hmeidat ◽  
James W. Kemp ◽  
Brett G. Compton
Keyword(s):  
3D Printing ◽  
High Strength ◽  
Epoxy Nanocomposites

Polymerizable Nonconventional Gel Emulsions and Their Utilization in the Template Preparation of Low-Density, High-Strength Polymeric Monoliths and 3D Printing

2019 ◽  
Vol 52 (6) ◽  
pp. 2456-2463 ◽  
Author(s):  
Jianfei Liu ◽  
Pei Wang ◽  
Yinan He ◽  
Kaiqiang Liu ◽  
Rong Miao ◽  
...  
Keyword(s):  
3D Printing ◽  
High Strength ◽  
Low Density

High strength aligned SiC nanowire reinforced SiC porous ceramics fabricated by 3D printing and chemical vapor infiltration

2020 ◽  
Vol 46 (5) ◽  
pp. 6978-6983 ◽  
Author(s):  
Quan Zhu ◽  
Xiang Dong ◽  
Jianbao Hu ◽  
Jinshan Yang ◽  
Xiangyu Zhang ◽  
...  
Keyword(s):  
3D Printing ◽  
Chemical Vapor ◽  
High Strength ◽  
Porous Ceramics ◽  
Chemical Vapor Infiltration ◽  
Vapor Infiltration

scholarly journals Recent Progress in 3D Printing of Elastic and High-Strength Hydrogels for the Treatment of Osteochondral and Cartilage Diseases

2020 ◽  
Vol 8 ◽  
Author(s):  
Wenli Dai ◽  
Muyang Sun ◽  
Xi Leng ◽  
Xiaoqing Hu ◽  
Yingfang Ao
Keyword(s):  
Articular Cartilage ◽  
3D Printing ◽  
Recent Progress ◽  
High Strength ◽  
Cartilage Defects ◽  
High Water Content ◽  
Covalent Bonds ◽  
Cartilage Diseases ◽  
Articular Cartilage Defects ◽  
And Cartilage

Despite considerable progress for the regenerative medicine, repair of full-thickness articular cartilage defects and osteochondral interface remains challenging. This low efficiency is largely due to the difficulties in recapitulating the stratified zonal architecture of articular cartilage and engineering complex gradients for bone-soft tissue interface. This has led to increased interest in three-dimensional (3D) printing technologies in the field of musculoskeletal tissue engineering. Printable and biocompatible hydrogels are attractive materials for 3D printing applications because they not only own high tunability and complexity, but also offer favorable biomimetic environments for live cells, such as porous structure, high water content, and bioactive molecule incorporation. However, conventional hydrogels are usually mechanically weak and brittle, which cannot reach the mechanical requirements for repair of articular cartilage defects and osteochondral interface. Therefore, the development of elastic and high-strength hydrogels for 3D printing in the repairment of cartilage defects and osteochondral interface is crucial. In this review, we summarized the recent progress in elastic and high-strength hydrogels for 3D printing and categorized them into six groups, namely ion bonds interactions, nanocomposites integrated in hydrogels, supramolecular guest–host interactions, hydrogen bonds interactions, dynamic covalent bonds interactions, and hydrophobic interactions. These 3D printed elastic and high-strength hydrogels may provide new insights for the treatment of osteochondral and cartilage diseases.

scholarly journals Benefits of 3D printing technologies for aerospace lattice structures

2021 ◽  
Vol XXIV (1) ◽  
pp. 8-16
Author(s):  
VOICU Andrei - Daniel
Keyword(s):  
3D Printing ◽  
Cell Structure ◽  
Weight Ratio ◽  
High Strength ◽  
Cellular Structures ◽  
Lattice Structures ◽  
Mass Reduction ◽  
Aerospace Sector ◽  
Potential Applications ◽  
Remote Operations

The article makes a brief presentation of the latest 3D printing methods that are used for manufacturing aerospace lattice structures. Most 3D printing technologies are not fully deployed on the industrial scale of aerospace sector, but are rather used for rapid prototyping of components. One of the main potential applications is for them to offer a rapid solution for remote operations, where it is difficult to supply parts. Additive manufactured lattice structures are cellular structures based on biomimicry (inspired from nature lattice structures such as bones, metal crystallography, etc.), that possess many superior properties compared to solid materials and are ideal for fabricating aerospace structures mainly due to the mass reduction they introduce and the high strength-to-weight ratio. Their mechanical properties are defined by the infill percentage, the geometry of the cell structure and the material used in the manufacturing process.

scholarly journals Characterization of Slurry-Cast Layer Compounds for 3D Printing of High Strength Casting Cores

Materials ◽  
2021 ◽  
Vol 14 (20) ◽  
pp. 6149
Author(s):  
Patricia Erhard ◽  
Jan Angenoorth ◽  
Joachim Vogt ◽  
Johannes Spiegel ◽  
Florian Ettemeyer ◽  
...  
Keyword(s):  
3D Printing ◽  
Bending Strength ◽  
State Of The Art ◽  
Temperature Stability ◽  
High Strength ◽  
Process Window ◽  
Drying Process ◽  
The Mean ◽  
Drying Conditions

Additive manufacturing of casting cores and molds is state of the art in industrial application today. However, improving the properties of chemically bonded casting cores regarding temperature stability, bending strength, and surface quality is still a major challenge. The process of slurry-based 3D printing allows the fabrication of dense structures and therefore sinterable casting cores. This paper presents a study of the slurry-based fabrication of ceramic layer compounds focusing on the drying process and the achievable properties in slurry-based 3D printing of casting cores. This study aims at contributing to a better understanding of the interrelations between the drying conditions in the 3D printing process and the properties of sintered specimens relating thereto. The drying intensity influenced by an IR heater as well as the drying periods are varied for layer thicknesses of 50, 75, and 100 µm. Within this study, a process window applicable for 3D printing of sinterable casting cores is identified and further indications are given for optimization potentials. At layer heights of 75 µm, bending strengths between ~8 and 11 MPa as well as densities of around 50% of the theoretical density were achieved. Since the mean roughness depth Rz is determined to be <30 µm in plane, an application of slurry-based 3D printing in investment casting is conceivable.

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