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The bar extruded at 370℃ shows the best microstructures and mechanical properties.
Thus it has the partial features of direct extrusion and ECAP process to some extent, and would be affected by the factors of ECAP process.
Mechanical properties.
According to the comparisons of microstructures and mechanical properties of ES process at different temperatures, it is found ES process at 370℃ could produce the best microstructures and mechanical properties.
It is found ES process at 370℃ could produce the best microstructures and mechanical properties.

Application of FOS in Thickness Measurement of Mechanical Seal Measurement Principle and Influence Factors on Measurement Accuracy of Reflection FOS.
Whether FOS resolution in mechanical seal can satisfy the command of thickness measurement or not will be discussed to analysis feasibility and major influence factors.
Rotation speed may influence sensor’s property by affecting flow field and it need to be proved by trial.
In this paper influence factors of medium and rotation speed on sensor property were discussed, where the measured sample with the same material and surface roughness was used.
Based on the analysis of influence factors in thickness measurement of mechanical seal, an experimental rig was built according to the configuration of real mechanical seals which is enclosed and rotatable (shown in figure 1).

Summary on research advances on the reservoir bank instability Zulian Zhang1,a,Ying Huang1,b 1Kunming University Science and Technology,Yunnan,China,650500 azhangzulian@2008.sina.com, bhuangying3764@sina.com Keywords:Bank instability,Influence factors,Stability analysis,Instability mechanism,Treatment measures Abstract.The reservoirbank instability is the outcome combined the action of the external factors withthe actionof the internal factors.
The width of thereservoirbank instability is relatively smaller when thereservoir bank is composed of the clay of the good physical properties and mechanical properties and the soil of weathering by the sedimentary rock.
The geologic structure is an important factor affecting the integrality of the reservoir bank rock mass.The attitude of the rocks,the thickness of stratum, the upper and lower sequence of each layer,the exposed position of each layer,the geologic structure of the reservoir bank rock affect directly the reservoir bank stability.
The external factors The rainfall, thereservoir water impounding and the water level fluctuation The changes of hydrological and geological conditions of thereservoir bank rock and soil caused by the rainfall,thereservoir water impounding and the water level fluctuation will change the properties ,the strength,the structure and the status of the reservoir bank rock ,and decrease the mechanical and physical properties of the reservoir bank rock and soil.These are important externalfactors inducing the reservoir bank instability .
The sensitivity analysis of theinfluence factors Wantao Zhang[4] et al. selected six factors about the angle of internal friction,thereservoir water level fluctuation, the earthquake acceleration coefficient, the cohesion, the unit weight and the pavement load to carry out the sensitivity analysis of the influence factors.The results showed that the angle of internal friction, thereservoir water level fluctuation and the earthquake acceleration coefficient were the very significant influence factors and the cohesion was the significant influence factor of the reservoir bank stability.Ran Ran[5] et al. pointed out that the bank angle and the height of the reservoir bank were the key factors to affect the reservoir bank stability in the geometry index of the reservoir bank.

However, few studies had focused on the sensitivity of factors affecting mechanical behavior of slender square steel slender columns filled with DCLs and fresh concrete (FC) under axial compression.
However, few studies have focused on the sensitivity of factors affecting mechanical behavior of slender square steel columns filled with DCLs and FC under axial compression.
This study aims to investigate the sensitivity of factors affecting mechanical behavior of slender square steel columns filled with DCLs and FC under axial compression. 2.
Table 2 Mechanical properties of steel tubes.
Pi, et al., Influence of demolished concrete blocks on mechanical properties of recycled blend concrete, Constr.

Material Properties Parameters Effect on Crack Threshold Zhenhua Yi School of Civil Engineering , Shandong University , Jinan 250061 , China ; Zhenhua_yi@163.com Key words: fatigue crack threshold; mechanical properties; stress strength factor; crack propagation size; plastic zone size Abstract.
In addition, it is impossible to consider all effect factors in formula due to many factors affecting on threshold.
The structure designers must use the material properties, mechanical parameters and design theories to design components.
Moreover, the threshold is not only related with the material properties, but also with other factors, such as loading conditions, temperature and environmental media.
（2）The crack threshold formula is related with the material Yield Strength, Elastic Modulus and Poisson Ratio, which is showed that the tensile properties of material are decisive factors for the crack threshold

Keywords: weld, double embedded cracks, stress intensity factor Abstract: In this paper, double embedded elliptical cracks in a weld of pressure vessels under tension was taken into consideration, and stress intensity factors at the crack tip were calculated with the emphasis on the interaction between cracks.
Propagation of the group cracks is not only influenced by factors like the plate thickness, embedded depth and cracks shapes, but also by the interactions from each other.
Material properties of the weld and the stress intensity factor calculation methodology are the same as those of the previous paper.
But KI0/ks0 increases rapidly, meaning that SIF at this position is greatly affected by the crack interaction.
Calculation of the stress intensity factors for elliptical cracks embedded in a weld under tensile loading I: single crack.

When the temperature change and under the influence of external factors, many materials can move from one state to another, thus significantly changing its structure and physicochemical properties [1-4].
All of these factors significantly affect the restructuring of the supramolecular structure and, as a result, on a variety of properties of the polymer material, leading to the improvement or deterioration of its specific technical characteristics [5].
It can be established from the data and analysis, that the effect of irradiation on strength and inelastic properties of polymers is significant, and first of all, it affects the amorphous phase of the material [9-11].
Thus, the effect of electron irradiation, load and temperature on the mechanical properties of Mylar film is very important and is described in the framework of exponential models.
Taipova, Nanoclusters and Electron Irradiation Effect on Mechanical Properties of Polyimide-Based Composite, Key Engineering Materials 769 (2018) 72-77, doi:10.4028/www.scientific.net/KEM.769.72

The result shows, preparation methods were significantly affect the crystallinity and thermal properties of TPNR nanocomposites.
The dispersion of clay is dependents on various factors, eg.
Preparation and mechanical properties of PP-clay hybrids using a maleic anhydride-modified PP oligomer.
Mechanical properties of polymer and composites.
Factors controlling mechanical properties of clay mineral/polypropylene nanocomposites.

The change rules of mechanical properties such as density test, bending strength and toughness in different sintering process were researched.
The optimal mechanical properties are obtained by sintering temperature at 1500℃.
Zirconia ceramics is also the main material improving the mechanical properties as heat resistance and abrasion resistance by plasma spraying coating.
Results and discussions Mechanical properties of clad material in different sintering process are shown in table.1.
The law of bending strength is similar to the density, which indicates that density is the main factor affecting the bending strength of the material.

Mechanical properties were obtained using tensile testing following DIN EN 10002.
In this way, tests in which not all processes affecting in the material are known can be used to build up and analyse mathematical models.
Factors X1 and X2 represent the temperatures in the range from 20 °C-250 °C and for strain rates in the range 10-2- 10-4s-1.
This allows variations to be made to the strain rate used in the process (i.e. allows it to be increased) without adversely affecting mechanical properties.
In contrast to this, the mechanical properties of Aluminium alloy AA5083-SPF and AZ31 display a strong dependency on the strain rate.