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Due to the johnson-cook model is widely used than other one, so it is also used to characterize the mechanical properties of tc4 titanium alloy.
The density of mesh is a factor affecting the results of the calculation.
Chinese Mechanical Engineering. 13 (2002) 1938-1940
China Mechanical Engineering. 17 (2006) 1813-1816

The experiment lasted for one year and five oil samples were taken during this period and evaluated their qualitative properties.
These might relate to important chemical and physical properties of the lubricant such its viscosity.
Viscosity Viscosity is one of the most important properties of hydraulic oil.
Since all hydraulic fluids have some inherent acidic properties any increase in TAN must be compared to the new oil value as a baseline.
FTIR analysis Very important factor when oil is in operation is its quality.

Introduction With remarkable high-temperature strength, corrosion resistance, thermal stability and creep resistance property, TC11 titanium alloy can endure long-term work at 500°C and is widely used in the aerospace industry for gas turbine components such as Engine compressor disks, blades and drums [1].
However, the unstable mechanical properties of TC11 titanium alloy caused by the elongated or massive α phase found in microstructure has seriously affected the widely using of ​​TC11 titanium alloy in aviation field [2].
Acoustic energy loss and wave propagation velocity change caused by interaction of microstructures are the two major factors in ultrasonic characterization of structures and properties.
Primarily, the ultrasonic attenuation includes absorption and scattering attenuation, and the main reasons for scattering attenuation are concerned with many factors, for example frequency of ultrasound, velocity, geometric parameters of object, grain size and elastic anisotropy [4].

On the other hand, Abdullah et al. evaluated the grain size and grain aspect ratio of the solder joint’s to investigate the relationship of mechanical properties, micromechanical properties and the microstructure of SAC305 lead-free solder wires [7].
This will enhance the understanding of the evolution of microstructure and its effect to other chemical, electrical, and mechanical properties of solar PV module. 7.
Chun Yan, Interfacial microstructure evolution and mechanical properties of Al/Sn joints by ultrasonic-assisted soldering, Trans.
Ambak, Relationship of mechanical and micromechanical properties with microstructural evolution of Sn-3.0Ag-0.5Cu (SAC305) solder wire under varied tensile strain rates and temperatures, J.
Zhong, A review of the influencing factors on anisotropic conductive adhesives joining technology in electrical applications, J. 

Effects of temperature and the addition of 3YSZ on the toughness, hardness and microstructure properties have been studied. 3YSZ second phase toughening HAp composites with higher toughness were successfully developed at relatively low temperatures through this technique.
However, HAp possesses low mechanical strength and fracture toughness, which is an obstacle to its applications.
A suitable method for improving the mechanical properties is based on the synthesis of composites made of HAp and other second phases [2-6].
The factor KIC was determined using the direct crack measurement method [11].
Despite the decomposition temperature of HAp should be the same in both specimens, adding 20vol% 3YSZ powder affected the maximum sintering temperature and the decomposition temperature of HAp3YSZ composites.

The conditions under investigation represent different stages of microstructural refinement as well as a ductility-optimized condition with superior crack growth properties, obtained by a combination of ECAP and aging.
The application of this concept shows a strong interaction of both parameters for all ECAP-processed conditions, where the ductility-optimized condition reveals superior FCP properties compared to the “as-processed” conditions.
A main focus lies on the correlation of the fatigue threshold with microstructural features and mechanical properties such as grain dimensions, yield stress, susceptibility of cyclic hardening, slip character and others.
Based on two necessary minimum conditions for crack growth, DK*th and K*max, which are considered as intrinsic material properties and are themselves a function of microstructure, environment, etc., this theory intentionally omits an explanation based on the extrinsic factor of crack closure.
In the near-threshold region, where crack propagation is strongly affected by the microstructure, grain size and, correspondingly, crack surface roughness are considered to be governing factors for both DKth as well as for its dependence on R.

In order to achieve a scientific selection of fly ash used in concrete, the influences of fly ash level on cementitious system rheological parameters, hydration degree and capillary adsorption properties were quantitative analyzed.
The influences of fly ash on concrete macro properties such as workability, mechanics property and durability were mainly inspected when different levels of fly ash were used in practical engineering [2].
The fly ash level was set to be the only variable parameter in concrete mix proportions to exclude impacts of other factors on test results.
The final test results were recorded and the appropriate fluid models were selected to fit and to obtain the paste rheological properties parameters including yield stress and plastic viscosity.
In-depth analysis found that the fly ash level also affected the hydration products increase rate.

From the mechanical point of view, this article is focused on the use of mechanical parameters of the liquid surface tension coefficient and viscosity to monitoring the process of detection of milk.
Required tension is depent by the liquid surface tension, the inner ring diameter and liquid materials, purity and other factors.
Measurement of Viscosity Viscosity The inherent viscosity is one of the properties of liquid, Whether stationary or movement of liquid has viscosity.
Many factors affect the size of η.

The properties of the experimental machines, grinding wheel and workpieces are presented in detail in Figure 2 and Table 1. 4 1 2 5 Figure 1.
Points Factors Ra (µm) No.
Points Factors Ra (µm) Y Concentration (%) X1 Flow rate (l/m) X2 Concentration (%) X1 Flow rate (l/m) X2 1 P6 2.0 1.0 0.598 8 P7 1.4 2.5 0.618 2 P8 2.0 4.0 0.590 9 P9 3.5 2.5 0.419 3 P3 5.6 2.5 0.518 10 P4 5.0 1.0 0.577 4 P2 5.0 4.0 0.476 11 P5 3.5 0.4 0.593 5 P9 3.5 2.5 0.418 12 P9 3.5 2.5 0.423 6 P1 3.5 4.6 0.517 13 P9 3.5 2.5 0.417 7 P9 3.5 2.5 0.414 Table 4.
Similarly, the flow rate also affects on the roughness Ra.
Rajhans, (2015) “Optimisation of heat generation in internal cylindrical grinding,” International Journal of Advances in Mechanical and Civil Engineering. 2 (4), 96-101

Numerical Simulation of Flow and Heat Transfer for Cooling Roller in Amorphous Spinning Process Yong-Kang LI, Yang YANG*, Yan-Ming SONG, Fei-Ran ZHANG School of Mechanical Engineering and Automation, Beihang University, Beijing, China buaalyk@qq.com, sym0823@163.com *Corresponding author Keywords: Amorphous, Cooling Roller, Flow, Heat Transfer, Numerical Simulation.
Introduction Amorphous alloy has more excellent physical, chemical and mechanical properties than conventional crystalline alloy, has a very broad application prospects on the electricity, aviation, aerospace and other fields.
In the actual production process a large number of high-temperature melt its heat is transferred to the cooling roll in a short time, resulting in surface temperature of the cooling roller has a sharp rise, cooling roller temperature rise can affect the amorphous quality and even completely crystallized phenomenon.
Thus, to achieve a high yield of amorphous materials and high productivity, accurately grasp the cooling roller temperature distribution and its influencing factors, measures be taken to keep cooling roller temperature constant within a certain range is very necessary [3].
Tab.1 Geometrical and process parameters Item of alloy value Roller radius, R (mm) Velocity of inlet cooling water, v/(m·s-1) Width of heat flow, b (mm) Width of copper roller, B (mm) Height of cooling roll, h (mm) Width of cooling roll, k (mm) Heat flux of cooling roll, q (W·m-2) 800 5 142 350 8 12 730000 Basic assumptions To facilitate the analysis of the main factors, the analysis of the process was simplified, proposed the following assumptions: 1.