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

200 and Counting: Unlocking CBM Potential with High-Strength, Low-Density Cement Slurry

2017 ◽  
Author(s):  
Dharmesh Talong ◽  
Animesh Kumar ◽  
Arindam Sarma ◽  
Kuhu Priyamvada ◽  
Vaibhav Tyagi ◽  
...  
Keyword(s):  
High Strength ◽  
Low Density ◽  
Cement Slurry

Additive technology applied to the realization of K-band microwave terminations: reproducibility improvement

2018 ◽  
Vol 10 (1) ◽  
pp. 3-8
Author(s):  
Azar Maalouf ◽  
Ronan Gingat ◽  
Vincent Laur
Keyword(s):  
3D Printing ◽  
Frequency Band ◽  
Rectangular Waveguide ◽  
Three Dimensional ◽  
Low Density ◽  
Support Material ◽  
Additive Technology ◽  
3D Printed ◽  
K Band

This study examines K-band rectangular waveguide terminations with three-dimensional (3D)-printed loads, and proposes an Asymmetrical Tapered Wedge topology. This geometry shows a good tradeoff between microwave performance and 3D-printing issues (printing directions and support material requirements), thus improving noticeably the reproducibility of the devices. The effect of the density of the 3D-printed load on the reflection parameter of the termination was investigated. Even for a low density, reflection level remained below −27.5 dB between 18 and 26.5 GHz. Reproducibility was demonstrated by the characterization of six loads that were 3D printed under the same conditions. Measurements demonstrate that a maximum reflection parameter level of −33.5 dB can be ensured over the whole frequency band without any post-machining of the 3D-printed devices.

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

Towards Mg based light materials of future: Properties, applications, problems and their mitigation.

2021 ◽  
pp. 1-43
Author(s):  
Annayath Maqbool ◽  
Noor Zaman Khan ◽  
Arshad Noor Siddiquee
Keyword(s):  
Corrosion Resistance ◽  
Review Paper ◽  
Weight Ratio ◽  
High Strength ◽  
Low Density ◽  
Widespread Application ◽  
Potential Barriers ◽  
Current Review ◽  
Processing Techniques ◽  
Corrosive Resistance

Abstract The use of lighter materials is one of the efficient means to mitigate the increasing demands on fuel resources, reduce CO2 emissions. Mg is one of the lightest material available and possesses exciting range of properties such as low density and high strength to weight ratio. Despite such exciting properties, the applications of Mg and its alloys were very limited in aerospace, automotive and biomedical industries but recently the application is picking-up. The restricted application is attributed to anisotropy, poor corrosive resistance and inflammability of Mg. The current review addresses the barriers limiting the widespread application of Mg based materials. Furthermore, the mitigation of the problems of anisotropy, poor corrosion resistance, ductility and inflammability of Mg are critically reviewed. The findings of this research provide insights of the processing techniques, properties and how to address the potential barriers of limited applications. The review paper will assist and motivate the researchers to ponder and overcome numerous problems related to Mg and its alloys by understanding the importance of each problem discussed in this review. An attempt has also been made to arrange research status on issues and the mitigation thereof with respect to Mg and its alloys as single reference point.

scholarly journals Tensile Behavior and Deformation Mechanism of Fe-Mn-Al-C Low Density Steel with High Strength and High Plasticity

Metals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 897 ◽  
Author(s):  
Jingyu Pang ◽  
Zhanming Zhou ◽  
Zhengzhi Zhao ◽  
Di Tang ◽  
Juhua Liang ◽  
...  
Keyword(s):  
Solution Treatment ◽  
High Strength ◽  
Total Elongation ◽  
Tensile Behavior ◽  
Gradual Transition ◽  
High Plasticity ◽  
Low Density ◽  
Hardening Behavior ◽  
Transmission Electron ◽  
Strain Hardening Behavior

Tensile behavior and plastic deformation mechanisms of Fe-22.8Mn-8.48Al-0.86C low-density steel were studied in this thesis. After solution treatment 1100 °C for 1 h; the steels obtained an excellent combination in mechanical properties; with tensile strength of 757.4 MPa and total elongation of 68%; which were attributed to the existence of annealing twins in austenite. The present steel presented a multiple stage strain hardening behavior which was associated with the changes of such dislocation substructures. With the increase of strain, the gradual transition from tangled dislocations to dense dislocation walls and microbands was found in (the transmission electron microscopy) TEM microstructures. Due to the influence of the evolution of the microstructure during the deformation process, the work hardening behavior of the experimental steel shows three distinct stages.

Description of the PM Process by Using Ishikawa-Analysis

2013 ◽  
Vol 752 ◽  
pp. 48-56
Author(s):  
Andrea Simon ◽  
Károly Kovács ◽  
C. Hakan Gür ◽  
Tadeusz Pieczonka ◽  
Zoltán Gácsi
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Powder Metallurgy ◽  
Thermal Expansion Coefficient ◽  
Expansion Coefficient ◽  
High Strength ◽  
Manufacturing Technology ◽  
Low Density ◽  
Composite Manufacturing ◽  
Low Thermal Expansion

Composites are special material which can provide individual properties such as high strength with low density or good thermal conductivity with low thermal expansion coefficient. Composites conform to the constantly evolving and more complex expectations. In order to make a product with good quality, it is important to choose suitable materials and technology. In this research powder metallurgy (PM), as one of the most common composite manufacturing technology, was examined -which factors and mechanisms influence mostly the properties of the product. Ishikawa method was used to reveal these correlations.

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