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Moreover, the cracks may also affect the use and safety of the double-block ballastless track during its service.
The Analysis of Maintenance Materials' Mechanical Properties Water may permeate into the roadbed slab through the cracks after the roadbed slab cracks, which may aggravate the failure of the roadbed slab.
On the basis of existing maintenance material properties, we choose the poisson ratio of the repair materials is 0.15 and coefficient of linear expansion is 2.5×10-5/℃.
Reference [1] Yong ZHANG .The research of space mechanics and the fracture properties on the double-block ballastless track in the Subgrade[D].
Crack Calculation Method and Influence Factors for Continuously prefabricated Slab[J].

These modifiers allow to influence both the metal structure and the shape, phase composition and physical properties of nonmetallic inclusions.
The modifying effect of alkaline-earth elements on the properties of steel is undeniable.
Data on the effects of alloys with alkaline-earth elements on the properties of metals are given, as well as technological features of the use of complex alloys with alkaline-earth metals in steelmaking.
The presence of strontium in a complex alloy can also have an effect on the physicomechanical properties of steel.
Poznyak, Structure formation and formation of the properties of steels and alloys, Kiev, Naukova Dumka, 1993

Its chemical composition and mechanical properties are illustrated in Table 1.
Chemical composition and mechanical properties of TMCP steel C Mn Si P S Cu Ni 0.1 1.49 0.25 0.014 0.001 0.024 0.25 Yield Strength (MPa) Young's Modulus (GPa) Elongation (%) 519 228 34.2 Electrochemical test results and discussion.
Like this study, even though oxygen dissolved in the solution was not considered, elevating the temperature of NaCl solution, viscosity of the solution is decreased, but on the other hand, activity of the ion that is a corrosion factor is increased.
Therefore, corrosion degradation of the specimen is promoted due to the instability of oxide film on the surface of the material as well as the penetration effect of the corrosion factors.
Since the asperity and oily particles on the surface of the specimen affect corrosion reaction of metal, after polishing the surface of every specimen, then cleaned with the ultrasound washer.

Three controllable factors of the turning process consisting of cutting speed, depth of cut and feed rate were incorporated.
Introduction Single-response optimization of a process means determining the values of controllable factors that give the highest value of a particular response.
The main mechanical and thermal properties of work material are summarized in Table 1.
Table 1: Mechanical and thermal properties of PEEK CF30 composite Mechanical and thermal properties PEEK CF30 Unit Tensile modulus 7700 MPa Melting temperature 340 °C Density 1.41 g/cm3 Coefficient of thermal expansion for temperature less than 150 °C 25x10-6 m/m/K Coefficient of thermal expansion for temperature exceeding 150 °C 55x10-6 m/m/K Dry turning experiments were carried out on a GORATU G CRONO 4S CNC machine, enabling up to 26.5 kW spindle power and maximum spindle speed 3350 RPM.
Alternatively, when factors are uncontrollable, the overall desirability value can be used to characterize the system based on the multiple selected criteria.

Im1,d 1Dept. of Mechanical Engineering, KAIST, Daejeon, Republic of Korea 2Max-Planck-Institut für Eisenforschung, Düsseldorf, Germany aall03@kaist.ac.kr, bpotential80@kaist.ac.kr, ch.lee@mpie.de, dytim@kaist.ac.kr Keywords: recrystallization, IF steel, simulation, curvature-driven pressure, texture.
It was found that local interface migration of protrusions/retrusions of recrystallization fronts could significantly affect the kinetics, grain morphology and annealing texture according to the present investigation.
Introduction In automobile industry, prediction of anisotropic property of interstitial free (IF) steel sheet is of great interest.
In this context, local interface migration of protrusions/retrusions of recrystallization fronts could affect recrystallization kinetics and textural evolution as a significant factor of oriented growth.
The material parameters [5] used in simulations are 69.2 [GPa] for shear modulus; 2.48 [Å] for burgers vector; 0.79 [J/m2] for the high angle grain boundary specific energy; 9.74810-1 [m3/Ns] for the pre-exponential factor of the mobility and 3.9 [eV] for the activation energy of grain boundary mobility.

Its running state often directly affects the overall equipment performance.
(2) Where, is scale factor; the parameter is shift factor.
There is the optimal decomposition level and optimal wavelet basis in signal wavelet analysis on de-noising, take all factors into consideration in de-noising processing in order to get the most realistic signal.
Journal of Mechanical Engineering.2010,46(15):76-81
Journal of Mechanical Engineering,2010,46(2):28-33

Because of the long-term effects of some disadvantageous factors such as loading, structure-fatigue, erosion, material aging etc, there will be inevitably coming up with natural aging, accumulations of damage and paroxysmal accident for bridge structures during their services.
In recent years, frequent accidents including collapse of the bridges bring about serious damages to human lives and property.
It is an important factor that affects signal processing ability, transferring efficiency and signal-noise ratio.
In this system, there are mainly three factors affecting the quality of the real-time: speed of liquid conduction, the speed of CPU and the speed of data transition.
So we can see that the decisive factor that affects the real-time is the RS-485 net.

In order to increase the ceiling height and does not affect the interior layout, take the original two columns of 9 / C-axis and 10 / C-axis truncated, in the two to three floor, about two-storey height (3.870m ~ 10.875 m range).
The mechanical properties of materials were homogeneous, and the mechanical properties of the materials in all directions were the same, so the materials were ideal elastoplasticity [1].
Comprehensive consideration of the existing situation and other field of various factors, the actual deformation was in 3.0 ~ 4.0 mm, stress ratio of chord and flank rod was not more than 0.6.
Fig.4 The vertical displacement of each node Conclusions The plane calculation model of H-beam steel transfer truss was established, on the basis of some basic assumptions, such as material properties and so on.

The mechanical properties of the spoke are listed in Table 1.
True stress and true plastic strain curve of A356-T6 aluminum Table 1 Mechanical properties of the spoke Mechanics Properties Yield Strength Tensile Strength Elongation at Break Young's Modulus 150 (Mpa) 255 (Mpa) 4% 66 (Gpa) Since the tire will absorb partial kinetic energy from the dropping striker during impact testing, the general practice is to deduct a certain percentage of the striker's kinetic energy to compensate for the exclusion of tire in the simulation.Before the striker contacts with the tire, the total kinetic energy of the striker is E = mgH (2) where m is the striker mass, H is the free-fall distance.
Simulation Results In this section, effects of mass scaling factor and impact location on overall wheel deformation will be discussed in sequence.
As expected, computation time can be dramatically reduced from 5 hours to 2 hours when the mass scaling factor is -8e-4.
Failure criterion is based on the equivalent plastic strain at break point that can be measured from a uniaxial tensile test in the lab. 2) Mass scaling method can dramatically reduce the computational time with little sacrifice of accuracy, which can accelerate the product design and development process. 3) The impact location will affect the plastic strain distribution and magnitude.

Compared as-quenched samples with as-normalized samples under the same healing parameters, it is found that cooling speed is also an important factor for internal crack healing.
As a result, the normal use of the workpieces was affected and their service life was shortened.
Yuan et al. [1, 2] studied internal crack healing in 20MnMo steel via a modelling method, and pointed out that recrystallization was the mainly factor for eliminating cavity-type defects.
Recently, Xin et al. [5, 6] investigated microstructure and mechanical properties of internal crack healing in a low carbon steel at elevated temperature, found that there were two crack healing mechanisms in the low carbon steel and the healing process could be classified into four stages, and also discovered that the strength recovery rate was higher than that of the plasticity.
Li, Microstructure and mechanical properties of internal crack healing in a low carbon steel, Mater.