Materials
Công bố khoa học tiêu biểu
* Dữ liệu chỉ mang tính chất tham khảo
Sắp xếp:
Rheological Properties of Cement Paste with Nano-Fe3O4 under Magnetic Field: Flow Curve and Nanoparticle Agglomeration
Materials - Tập 13 Số 22 - Trang 5164
Understanding the influence of magnetic fields on the rheological behavior of
flowing cement paste is of great importance to achieve active rheology control
during concrete pumping. In this study, the rheological properties of
cementitious paste with water-to-cement (w/c) ratio of 0.4 and nano-Fe3O4
content of 3% are first measured under magnetic field. Experimental results show
that the shear str...
Effect of Solution Treatment on Precipitation Behaviors, Age Hardening Response and Creep Properties of Elektron21 Alloy Reinforced by AlN Nanoparticles
Materials - Tập 10 Số 12 - Trang 1380
In the present study, the solution and ageing treatments behavior of Mg-RE-Zr-Zn
alloy (Elektron21) and its nano-AlN reinforced nanocomposites have been
evaluated. The properties of the thermal-treated materials were investigated in
terms of Vickers hardness, the area fraction of precipitates, microstructure and
phase composition. The solution treatments were performed by treating at 520 °C,
550 °...
Decision Tree Methods for Predicting Surface Roughness in Fused Deposition Modeling Parts
Materials - Tập 12 Số 16 - Trang 2574
3D printing using fused deposition modeling (FDM) includes a multitude of
control parameters. It is difficult to predict a priori what surface finish will
be achieved when certain values are set for these parameters. The objective of
this work is to compare the models generated by decision tree algorithms (C4.5,
random forest, and random tree) and to analyze which makes the best prediction
of the ...
Effect of Material and Process Specific Factors on the Strength of Printed Parts in Fused Filament Fabrication: A Review of Recent Developments
Materials - Tập 12 Số 10 - Trang 1664
Additive manufacturing (AM) is rapidly evolving as the most comprehensive tool
to manufacture products ranging from prototypes to various end-user
applications. Fused filament fabrication (FFF) is the most widely used AM
technique due to its ability to manufacture complex and relatively high strength
parts from many low-cost materials. Generally, the high strength of the printed
parts in FFF is at...
Estimation of the Adhesion Interface Performance in Aluminum-PLA Joints by Thermographic Monitoring of the Material Extrusion Process
Materials - Tập 13 Số 15 - Trang 3371
Using additive manufacturing to generate a polymer–metal structure offers the
potential to achieve a complex customized polymer structure joined to a metal
base of high stiffness and strength. A tool to evaluate the generated interface
during the process is of fundamental interest, as the sequential deposition of
the polymer as well as temperature gradients within the substrate lead to local
varia...
Effect of Structural Build-Up on Interlayer Bond Strength of 3D Printed Cement Mortars
Materials - Tập 14 Số 2 - Trang 236
Understanding the relationship between the intrinsic characteristics of
materials (such as rheological properties and structural build-up) and
printability and controlling intrinsic characteristics of materials through
additives to achieve excellent printability is vital in digital concrete
additive manufacturing. This paper aims at studying the effects of material’s
structural build-up on the int...
The Effect of Material Fresh Properties and Process Parameters on Buildability and Interlayer Adhesion of 3D Printed Concrete
Materials - Tập 12 Số 13 - Trang 2149
The advent of digital concrete fabrication calls for advancing our understanding
of the interaction of 3D printing with material rheology and print parameters,
in addition to developing new measurement and control techniques. Thixotropy is
the main challenge associated with printable material, which offers high yield
strength and low viscosity. The higher the thixotropy, the better the shape
stabi...
The Effect of Accelerator Dosage on Fresh Concrete Properties and on Interlayer Strength in Shotcrete 3D Printing
Materials - Tập 13 Số 2 - Trang 374
Recently, the progress in 3D concrete printing has developed enormously.
However, for the techniques available, there is still a severe lack of knowledge
of the functional interaction of processing technology, concrete rheology and
admixture usage. For shotcrete 3D printing technology, we present the effect of
accelerator dosages (0%, 2%, 4% and 6%) on fresh concrete properties and on
interlayer s...
In Situ Spinel Formation in a Smart Nano-Structured Matrix for No-Cement Refractory Castables
Materials - Tập 13 Số 6 - Trang 1403
The hydration of an equimolar mixture of MgO and Al2O3 nano-powders has been
proven to be an effective way to synthesize Mg6Al2CO3(OH)16∙4H2O as a component
of a nano-structured matrix and magnesia-alumina spinel precursor for
high-performance cement-free corundum-spinel refractory castables.
(Mg3)–OH–brucite sites (417 °C) formed initially within the magnesia–alumina
hydrating blended paste were ...
Ethylene Formation by Catalytic Dehydration of Ethanol with Industrial Considerations
Materials - Tập 6 Số 1 - Trang 101-115
Ethylene is the primary component in most plastics, making it economically
valuable. It is produced primarily by steam-cracking of hydrocarbons, but can
alternatively be produced by the dehydration of ethanol, which can be produced
from fermentation processes using renewable substrates such as glucose, starch
and others. Due to rising oil prices, researchers now look at alternative
reactions to pr...
Tổng số: 352
- 1
- 2
- 3
- 4
- 5
- 6
- 10