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In geotechnical engineering there are several methods proposed the relationship between rock properties (the unconfined compressive strength) and the ultimate side shears resistance and base resistance.
Fig.1 Reduction factors, .
Fig. 2 Reduction factors, The second kind assumes a function with square root of the unconfined compressive strength multiplied by a constant factor (roughness factor).
Table 2 The values of the socket depth factor Depth of socket 0 1 2 3 5 7 Pile diameter 0.8 2.8 3.6 4.2 4.9 5.2 The factors affecting the unit side shear resistance and base resistance Roughness A numbers of researches have indicated the influence of roughness factor on the ultimate side shear resistance for drilled shafts socketed into rock.
The factors affecting the unit side shear resistance and base resistance were analyzed including roughness, cleanliness, length/diameter ratio of the socket, length of drilling time, angle of internal friction and the angle of dilation.

They found that oil supply pressure do affect static and dynamic performances of journal bearing.
Details of test bearing dimensions, lubricant properties and operating parameters are given in Table 1.
This is as expected likely due to many of the actual factors during the bearing operations were not considered in the numerical and computational models.
Oil groove location was found to affect the torque.
Oil groove locations have affected the frictional force.

In addition to the above mentioned changes, elastic constants are also significantly affected by temperature.
Using the resonance frequency, for a known mass and dimensions of the specimen, elastic properties can be determined with the help of relevant frequency equations.
Experimental Dynamic elastic constants and internal friction properties of IN718 and Haynes 214 super alloys were evaluated as a function of temperature.
In addition to the elastic constants, the IET method allows to calculate internal friction properties.
Change of these properties attributed to the minor coarsening of intermetallic γ” Ni3(Al, Nb) precipitation may take place up to 650°C, which is very close to the aging temperature [6].

As a new type of materials, carbon nanotubes (CNTs) have been intensively studied due to their outstanding properties.
Introduction Carbon nanotubes (CNTs) have drawn the interest of many researchers because of their excellent electrical, mechanical, and thermal properties [1,2].
These parameters include the electrode geometry, the magnitude and frequency of the applied AC voltage, the electrical properties of the CNTs and the dielectric liquid, and the duration of the AC field.
The frequency of the AC voltage and the permittivity and conductivity of the CNTs and the dielectric liquid affect the DEP force through the Clausius-Mossotti factors.
is the segment depolarization factor of a cylinder.

Based on the results of testing the samples, mathematical models have been developed which describe the dependences of the physical and mechanical properties of the cement com-posite material samples on the fraction of waste and water-cement ratio.
Variation intervals of factors x1 and x2 Factors Variation levels -1 0 +1 The proportion of powdered optical discs waste from the filler weight (factor x1) 0 0.25 0.5 Water-cement ratio (W/C, factor x2) 0.45 0.55 0.65 Dispersion of the mixture components and compaction during molding was carried out manually.
Results and Discussion Based on the data obtained as a result of testing the samples, mathematical models have been developed that describe the dependences of the physical and mechanical properties of the samples of cement composite material on the above factors.
The possibility of using the maximum possible amount of waste without significant deterioration of the physical and mechanical properties of fine-grained concrete is noteworthy.
The physical and mechanical properties of the cement composite material with a filler in the form of powdered optical discs

TCC at the interface is a complex property which depends on the mechanical, thermal as well as surface properties of the two contacting bodies [8].
Apart from the above factors both the surface roughness and the distribution of asperities affects TCC [11] which is a function of contact pressure at the interface.
Consequently, many studies have investigated numerical methods to estimate TCC, focusing on simulating rough surfaces and accounting for various factors that affect TCC [11-16].
Mu, Experimental research on influence factors of thermal contact resistance between joints, Applied Mechanics and Materials 52 (2011) 1560-1564
S. for Testing, Materials, Standard Test Method for Thermal Transmission Properties of Thermally Conductive Electrical Insulation Materials, ASTM International, 2017

It's a key problem in the mechanical field that the machining stress and original stress redistribute in the workpiece when cutting.
This is the main factor to cause the workpiece distortion.
Because the effect of stress wave affects the stress distribution in the workpieces, which may destroy the geometric stability and physical performance of workpieces, the stress has become a wide concern in the mechanical engineering circles.
The entity mesh is plane quadrangle, which has such property as stability and high precision.
FEM Analysis of Cutting Sequenence Effect on Mechanical Characteristics in Machined Layer.

Introduction Pure Ti has been extensively used in orthopedic as metallic implant materials because of their excellent corrosion resistance, good mechanical properties, and certain biocompatibility [1].
However, to shorten the implant-tissue osseointegration time, the bone ingrowth properties and implant fixation behavior need to be further improved.
However, the high degradation rate of HA coating in biological environment can cause detrimental effect on adhesion properties, which can result in undesirable debris and even delamination, and eventually leads to failure of the implant [2].
It is well known that the true bonding strength of FHA coating is affected by many factors, such as the coating thickness and interlamellar cohesive strength of the coating, property of the glue employed, and roughness of the substrate surface.
Under the same processing parameters, the thickness, phase and residual stress within coating will be in the same level; therefore, surface roughness of the substrate will be the main factor to affect the bonding strength.

Al/Mg alloys have been attracted significant attention because of their excellent mechanical properties.
The behavior of materials under dynamic loading depends strongly on the strain rate [17] and the composition that affects the microstructures as well as the other factors.
From our simulations, we obtain the mechanical properties of Al/Mg phases with different percentage of Mg.
Ec is the cohesive energy, α0 is the equilibrium lattice parameter, A is the scaling factor for the embedding energy, α is the exponential decay factor for the universal energy, β(0-3) are the exponential decay factors for the atomic densities, t(0-3) are the weighting factors for the atomic densities, Cmax and Cmin are screening parameters, ρ0 is the density scaling factor that is relevant only for element pairs. [38].
One of the fundamental questions if the structure and mechanical properties of these phases as a function of chemical composition influence their mechanical properties.

Transparent materials containing nano-sized crystals inside the amorphous matrix have a good suitability to host glass for rare-earth ions by providing low phonon energy environment for rare-earth ions [4], as well as good chemical and mechanical properties [5].
In this work, we have investigated the up-conversion luminescence properties of Li2O3-14.7Al2O3-58.1SiO2- 16.7B2O3 glass doped Sm 3+ ions by heat treatment for generating nano-sized crystals.
Glasses thermal properties were analyzed by Differential Thermal Analyzer (DTA), Thermal Mechanical Analyzer (TMA) (Shimadzu TMA-60).
Table 1 Thermal Properties of 10.5Li2O-14.7Al2O3-58.1SiO2-16.7B2O3 (wt %) Glass.
As well known, there are so many factors to make the up-conversion of emission intensiy.