Transparent and flexible resins functionalized by lanthanide-based upconversion nanocrystals

2021 ◽  
Author(s):  
Yao Wang ◽  
Jingxiang Low ◽  
Yafei Bi ◽  
Yu Bai ◽  
Yonghu Chen ◽  
...  
Keyword(s):  
Composite Structure ◽  
Multiple Application ◽  
Upconversion Nanocrystals

Functional resins with optical adjustment capability own great potential in multiple application scenarios. To this end, we functionalize resins with upconversion nanocrystals (UCNCs), namely UCNCs-Au composite structure, to endow them...

FIRE RESISTACE OF SHEAR CONNECTORS FOR COMPOSITE BEAMS

2020 ◽  
Vol 92 (6) ◽  
pp. 59-65
Author(s):  
G.P. TONKIH ◽  
◽  
D.A. CHESNOKOV ◽  
◽  
Keyword(s):  
Fire Resistance ◽  
Composite Structure ◽  
Composite Structures ◽  
Composite Beams ◽  
Design Codes ◽  
Connection Strength ◽  
Shear Connectors ◽  
Shear Connection ◽  
Capacity Reduction ◽  
Russian Research

Most of Russian research about composite structure fire resistance are dedicated to the composite slab behavior. The composite beams fire resistance had been never investigated in enough volume: the temperature evaluation within the scope of the actual Russian design codes leads to the significant reduction in the shear connection strength. Meanwhile, there no correlation between the strength decreasing and type of the shear connection. The article provides an overview of the relevant researches and offers some approaches which could take into account bearing capacity reduction of the shear connectors within composite structures design.

Direct Fuel Cooled Composite Structure,

1999 ◽  
Author(s):  
Denis G. Medwick ◽  
Joaquin H. Castro ◽  
David R. Sobel ◽  
Jean-Pierre Vidal ◽  
Guy Boyet
Keyword(s):  
Composite Structure

Fluidic embedding of additional macroporosity in alginate-gelatin composite structure for biomimetic application

2020 ◽  
Vol 31 (18) ◽  
pp. 2396-2417
Author(s):  
Arindam Banerjee ◽  
Subhayan Das ◽  
Mahitosh Mandal ◽  
Somenath Ganguly
Keyword(s):  
Composite Structure

scholarly journals Strategy to shape, on a half-meter scale, a geopolymer composite structure by additive manufacturing

Open Ceramics ◽  
2021 ◽  
Vol 5 ◽  
pp. 100071
Author(s):  
J. Archez ◽  
S. Maitenaz ◽  
L. Demont ◽  
M. Charrier ◽  
R. Mesnil ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Composite Structure

Low-frequency sound absorption of a tunable multilayer composite structure

2021 ◽  
pp. 107754632110082
Author(s):  
Hanbo Shao ◽  
Jincheng He ◽  
Jiang Zhu ◽  
Guoping Chen ◽  
Huan He
Keyword(s):  
Porous Material ◽  
Absorption Coefficient ◽  
Composite Structure ◽  
Low Frequency ◽  
Acoustic Absorption ◽  
Multilayer Composite ◽  
Absorption Frequency ◽  
Acoustic Absorption Coefficient ◽  
Simulation And Experiment ◽  
Single Material

Our work investigates a tunable multilayer composite structure for applications in the area of low-frequency absorption. This acoustic device is comprised of three layers, Helmholtz cavity layer, microperforated panel layer, and the porous material layer. For the simulation and experiment in our research, the absorber can fulfill a twofold requirement: the acoustic absorption coefficient can reach near 0.8 in very low frequency (400 Hz) and the range of frequency is very wide (400–3000 Hz). In all its absorption frequency, the average of the acoustic absorption coefficient is over 0.9. Besides, the absorption coefficient can be tunable by the scalable cavity. The multilayer composite structure in our article solved the disadvantages in single material. For example, small absorption coefficient in low frequency in traditional material such as microperforated panel and porous material and narrow reduction frequency range in acoustic metamaterial such as Helmholtz cavity. The design of the composite structure in our article can have more wide application than single material. It can also give us a novel idea to produce new acoustic devices.

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