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This research aims to investigate the properties of elastohydrodynamic rotational lubrication analysis on journal-bearing systems.
The simulation shows that the significant factors are bearing width, oil temperature, viscosity, and bearing clearance.
The main objective of this investigation is to perform the numerical simulation of EHD lubrication on the MBD properties of journal-bearing systems.
The material and oil lubricant properties used in this model are shown in Table 3.
The material and oil properties Parameter Value Composite Elastic modulus 680000 Pa Elastic Factor 0.003 Dynamic viscosity 0.0271 Pa-s Pressure viscosity 1.98x10-8 Pa-1 Fluid density 0.858 g/cm3 Simulation Results Figure 4 shows the friction torque under different shaft speeds and different loads.

The light transmittance, its affecting factors and transparent mechanism of the MgAl2O4 samples have been discussed.
Smaller grains can reduce the grain boundaries to increase the transparency, and improve the mechanical properties of the products.
Factors affecting the transmittance.
First, the sintering temperature and pressure are the primary factors affecting the optical transmittance of samples.
Second, it was found that the quality of the starting powder is also an important factor affecting the light transmittance.

Mechanical Properties of PMMA/PC Blend by Injection Molding Process Van Thanh Hoang1,a*, Duc Binh Luu1,b, Quang Bang Tao1,c, Chao-Chang A.
Mechanical properties including tensile and impact strengths were carried out at room temperature of 23oC.
The factors and levels are shown in table 1.
In addition, impact behavior is more strongly affected by melt temperature in comparing to the tensile property.
Cooling time was found to be the least significant parameter for the mechanical properties.

Introduction Wood is the most abundant and widely used material with excellent mechanical properties in spite of its low density [1].
The mechanical behavior of wood is strongly affected by the complex anatomy of the material, and properties such as stiffness and strength are influenced by the wood internal structure at several structural levels.
Crack growth is affected by crack locations, loading directions, material stiffness and strength properties, etc.
The factors, such as the orthotropic parameters, the different strength ratio and stiffness ratio between the earlywood and the latewood of the annual rings, impacting on the plastic zone and fracture properties are discussed.
Chui: Factors affecting mode I fracture energy of plantation-grown red pine.

In air entrained concrete, the total air content is not the only factor that affect the final properties of the concrete, the air void structure parameters, including void size, shape, and distribution, are key factors as well.
Air entrainment has not come into practice widely even today due to concrete producers difficulties with air content in concrete, and the factors affecting air entrainment, such as, temperature, cement chemistry, and supplementary cementing materials, all quite important to the final properties of the concrete.
In fact, the air-void size and distribution are also quite important to the final properties of concrete, and they were affected by those factors mentioned above.
In the air entrained concrete, the air void structure is another important factor that affects the final properties of the concrete.
In air entrained concrete, the total air content is not the only factor that affects the final properties of concrete.

Table 1 Mechanical Properties, Chemical Properties of weld metal for eight different fluxes Flux No.
Response table of means for tensile strength (Table 3) shows factors rankings affecting tensile strength.
It is clear from Table 3 that CaO is the most affecting constituent/significant factor (Rank 1) and increasing effect among all the constituents and CaF2 does not affect/insignificant factor for tensile strength.
Conclusion · CaO and SiO2 are the influencing factors for tensile strength whereas CaF2 does not affect
It has been also observed that mechanical properties are not affected by BI only but %age composition of flux constituents in conjunction with BI plays role in deciding the same

Effect of Chemical Composition and Heat Treatment Parameters on the Structure and Properties of Vanadis 23 and Vanadis 30 PM High-Speed Steels Jana SOBOTOVÁ1,a*, Martin KUŘÍK1,b and Jakub LACZA1,c 1Czech Technical University in Prague, Faculty of Mechanical Engineering, Karlovo nám. 13, 121 35 Prague 2, Czech Republic aJana.Sobotova@fs.cvut.cz, bMartin.Kurik@fs.cvut.cz, cJakublacza@gmail.com Keywords: PM high-speed steel, cobalt, conventional heat treatment, deep cryogenic treatment, metallographic analysis, mechanical properties Abstract.
The paper deals with the assessment of the effect of content of cobalt and cryogenic treatment on mechanical properties and structure of Vanadis 23 and Vanadis 30 PM high-speed steels.
The mechanical properties are assessed by a three-point bending flexural test and by measurement of the hardness.
This method of processing is used to remove retained austenite combined with fine precipitation which were observed concurrently with an improvement of mechanical properties, typically hardness and wear resistance and to achieve an optimal ratio between properties like hardness and toughness which go in the opposite direction [7,8].
Theisen, Evaluation of factors influencing deep cryogenic treatment that affect the properties of tool steels, Journal of Materials Processing Technology. 210 (2010) 1949-1955.

The Parameters Affecting Strength Calculation of Gears Silvia Medvecká-Beňová1, a *, Peter Frankovský1, b and Iveta Janeková1, c 1Faculty of Mechanical Engineering, Technical University, Letná 9, 042 00 Košice, Slovakia asilvia.medvecka@tuke.sk, bpeter.frankovsky@tuke.sk, civeta.janekova@tuke.sk Keywords: heat treatment, safety factor, gearing, material Abstract.
Good properties of heat-treated steels are at the correct thickness of the heat-treated layer of the tooth.
Suitable heat or chemical - heat treatment may improve the mechanical properties of the core and the surface hardness of the teeth of gears.
Fig. 2 Influence of module on safety factors Influence of materials (characterized by a bending fatigue strength) of the safety factor for the bending transmission is shown in Fig. 3.
Fig. 3 Influence of material on safety factors Subsequently, the proposed gearing was checked for bending and touch with the following results in Table 4.

The hydraulic impactor is the key component that affects the hydraulic impact mechanical properties.
Impact energy or impact power parameter is the important indication of impact system performance, which reflects the advantages and disadvantages of the impact mechanical properties.
There are three factors affecting the basic function parameters: hydraulic conditional parameters, working object and using conditions.
The factors such as the fast reversion of the valve would be affected at any time.
Conclusions Many parameters and factors all affect the impact performance of the hydraulic impactor.

Due to the differences in the thermodynamic properties of the material, welded heat affected zone (HAZ) severely weaken the mechanical properties of aluminum compared to steel.
The curve of the material properties of Non-HAZ and HAZ is shown in Figure 2.
To research the ultimate strength of aluminum stiffened plate under cyclic loading, the cyclic loading process is also one of crucial effect factors.
Therefore, good welding crafts can remarkably improve the ultimate strength mechanical property of aluminum stiffened plate
It shows that with the number of cycle increasing, the mechanical property of stiffened plate is becoming stable.