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Comparison of Conductivity of Al2O3 Nanofluids between experiments and Maxwell Model Yu jin-ze 1, a, Liu Bin2,b ,LI Zhen-liang 1,c 1 College of Mechanical Engineering, Tianjin University of Science & Technology Tianjin, P.R.C..300222 2 Tianjin Key Lab of Refrigeration Technology, Tianjin University of Commerce, Tianjin,P.R.C., 300134 a yujinze@mail.tust.cn , blbtjcu@tjcu.edu.cn, cjshlzl@tust.edu.cn Keywords: nano-fluid; thermal properties; mass fraction; diameter Abstract.
The thermal properties of nano-fluids are affected by many factors.
The results show that the diameter of the particle plays a critical role on thermal properties of the base fluid.
The impact of the different factors of nanofluid thermal properties of mass fraction, volume fraction and nanofluid particle size were analyzed, respectively.
Conclusions The conductivity of nanofluids are affected by many factors, such as the volume fraction, temperature, diameter of nanoparticle.

In order to improve corrosion resistance and mechanical properties of magnesium alloys, titanium with high specific strength was warm roll-bonded on the surface of AZ31 magnesium alloy sheets.
This texture significantly affected tensile properties of clad sheets, resulting in lower proof stress and higher elongation at the rolling direction than at the transverse direction.
Mechanical Properties.
To explain anisotropic tensile properties of the AZ31/Ti sheets with main orientations of (01110)[0 551] for the AZ31 layer and (1214)[1010] for the titanium layer, Schmid factors for basal slip of magnesium are listed in Table 1 together with Schmid factors for prismatic slip of titanium that has the lowest CRSS.
However, twining itself may hardly lead to marked anisotropy of mechanical properties, although deformation twins were observed in the AZ31 layer of tensile tested specimens.

There was a growing interest in replacing traditional plastics with composites of thermoplastic polymers with various fillers, which are factors that initiate the biological decomposition of plastic products [4, 5].
Numerous similar studies showed that addition of native starch particles to polyolefins has a negative effect on mechanical properties of polymer.
Thus, to obtain composite films with acceptable mechanical properties, the maximum content of native starch was limited to about 20-30% mass.
It is known that starch, depending on its origin and chemical nature, starch has different structural and chemical characteristics, which can affect the mechanical and organoleptic properties, as well as affect the ability to biodegrade the developed film materials.
Changes dependency in mechanical properties on compositions formulation is obtained.

Preparation and properties of MWCNTs/CF Reinforced Epoxy Resin Composite patch SONG Wei, LI Chang-Qing, LIN Lin, CHEN Yang Department of Remanufacturing Engineering, Academy of Armored Force Engineering, Beijing, China, 100072, including country songwei9305@gmail.com Keywords: composite patch; multi-walled carbon nano-tubes (MWCNTs); mechanical properties; thermal properties Abstract: Multi-walled carbon nano-tubes and carbon fiber reinforced epoxy resin (MWCNTs/CF/EP) composite patch was prepared by the route of hot-melt impregnation.
The results of the mechanical properties shown that adding MWCNTs had made the tensile strength and interlaminar shear strength increased by 9.79% and 3.1%, separatively.
The thermal properties were performed by TG. 2.
The composite patch has a slight weight loss at temperature lower than 297.5℃, affected by the factors such as little water or small organic molecules in the sample [9].
[6] HuaFeng Wang, ZhenHua Li, XinQing Wang, etc, Preparation and mechanical properties of carbon nanotubes/resin epoxy composite, J.

Experiment Program There are many factors that affect the performance of sintered parts in the experiments on SLS.
The factors affect the performance in different ways, and affect each other in the experiments.
Four factors were considered in the experiment, and there are three levels for each of the factors.
Microstructural origin of physical and mechanical properties of polyamide 12 processed by laser sintering [J].
Structure and mechanical properties of cellulose based scaffolds fabricated by selective laser sintering[J].

Investigation of Mechanical Properties of Unidirectional Fibrous Composite by Micro-Mechanics Model Kazem Reza Kashyzadeh 1,a, Shokoofeh Dolati 2,b 1,2 .
Investigation on Physical characteristics and mechanical properties of the material forming the micro scale 2.
Investigation of physical and mechanical properties of multi - layer in Macro-scale 4.
Calculating Mechanical Properties of the Matrix Estimate Stress-Strain Curve of matrix under Tensile Loading: The resin was used epoxy and Characteristics and mechanical behavior in terms of isotropic and it is made ​​of plastics.
Fibers with the surrounding matrix modeled, and properties of each one are defined.

The discoloration of glass ionomer cement (GIC) can occur due to extrinsic and intrinsic factors.
GIC has poor mechanical properties, which are brittle, which shows high microporosity in GIC.
Therefore, it is necessary to add material alternatives to improve the mechanical properties in order to maintain color stability in GIC, such as silica.
Silica has properties that cannot conduct heat and has high mechanical properties[6-8].
But the good physical and mechanical properties is not enough, GIC must also be followed by color stability to prevent discoloration [4,10].

During the welding process, the heat affected zone experiences a complex action of thermal cycle and dissimilar materials are usually taken as filling metals for the seam, which results in great difference between the microscopic metallurgical structure and macroscopic mechanical properties of the base material and the seam material, which further affects the anti-fracture property and the integrity of welding structure.
Mechanical Model The mechanical model of the welded joint is shown in Fig.1, including base zone (BZ), heat affected zone (HAZ) and seam zone (SZ), and the whole welded joint is assumed to a thin steel plate and plane stress model is used for analysis and calculation.
The influence of changes of Poisson's ratio on stress intensity factors is not obvious, so Poisson's ratio is 0.3.
And there are two matching factors in dissimilar steel welded joint, which are the ratio of yield strength of seam metal and base metal 1 (M1) and the ratio of yield strength of seam metal and base metal 2 (M2), and in calculation M1=0.8, M2=1.5 and M1=1.5, M2=0.8.
The material parameters of different zones in the calculation of same steel welded joint are shown in Table 1, the yield strengths of different zones of same steel welded joint according to different matching factors are shown in Table 2, the material parameters of different zones in the calculation of dissimilar steel welded joint are shown in Table 3, and the yield strengths of different zones of dissimilar steel welded joint according to different matching factors are shown in Table 4.

For samples with shorter soaking time, sintering with higher T1 temperature led to better mechanical properties because of its high density.
However, there are rare studies concerning about mechanical properties especially the bending strength.
Chen[8] suggested that the sintering temperature of first stage in the two-step sintering directly affects the porosity and grain size of the material, both of which affect the mechanical and optical properties.
The density had little effect on the mechanical properties of the sample while the grain size became the dominant factor of the strength of the sample.
(3) The samples prepared at higher T1 temperature showed better mechanical properties due to higher densities.

It was observed that the chopped strand mats enhanced effectively the mechanical properties of the composite panels manufactured by Hand Lay-up method, while the mechanical properties of the composite panels manufactured by VIMP decreased.
The mechanical properties of composite highly depend on the properties of fibers and the manufacturing process.
The model was used in the analysis of the mechanism of toughening and the influence of some main factors, as well as in the prediction of the inter-laminar toughness increment ΔGIC.
Mechanical properties testing.
Compared with the mechanical properties of the composite panels manufactured by hand lay-up technique, the mechanical properties of those by VIMP were relatively better whether adding chopped strand mats or not, although the addition of chopped strand mats narrowed this gap of mechanical properties.