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Necessity Surface roughness is one of the most important factors for evaluating work piece quality during the finishing process because the quality of surface affects the functional characteristics of the work piece such as fatigue and fracture resistance and surface friction.
Depending upon these three factors the corresponding responses measured are surface damage (%D), surface roughness (Ra) and tangential force(TF). 5.
The other parameters which are affecting the experimental results are assumed to be constant. 9.
But the grit size of the wheel is not affecting in the analysis of the surface roughness (Ra).
For the response tangential force (TF), the depth of cut, feed rate and grit size are the significant factors.

Rolling temperature directly affects the mechanical properties, microstructure, and energy consumption [3].
The property of rolled piece selected Al-Si alloy in material storage.
The material property of roller is defined as a rigid body.
The damage factors were greater than 0.45 under other temperatures and edge defects occur. 3.2 Experimental verification 3.2.1 Description of the experimental conditions and test procedures.
Considering all these factors, processing technology is better in the initial temperature of 350 ℃{TTP}8451 .

Thus, it is crucial that RCS should have proper mechanical properties to provide the cores made from it have enough strength to prevent core crack during the casting process.
Some researches studied relevant factors affecting to quality and improve properties of RCS.
There were 7 factors of interest in the experiment.
Type and properties of sand and resin under study.
Factors used in the CCD and their levels.

Most of the processing problem is due to much heat [2], the characteristics of the low thermal conductivity causes much cutting heat in the processing, affecting the deformation and friction between the tool - chip.
Although the two kinds of theories for different material properties, but these two kinds of theory have no clear boundary, and these two theories are complementary to each other.
Simulation study serrated chip on high speed milling of GH706 There are closely related to the formation of serrated chip and the nature of the material, and the cutting speed is the main factor affecting of cutting temperature.
Fig.3 Structure of cutting edge Fig.4 Model of the cutting system The cutting speed is the most important factor affecting the cutting temperature, so the simulation experiment uses the single factor test method.
Milling workpiece material is nickel-based superalloy, Trademarks GH706, hardness HRC 51.5, length 171mm, width 44mm, height 49mm.Its material properties is shown in table 3.

The Effect of Aluminum Clad on the Electrochemical Properties of the Similar Weld of Friction -Stir Welding of 2524 Changbin Shen, Jiayan Zhang, Jiping Ge, Feng Yan Liaoning Key Materials Laboratory for Railway and School of Materials Science and Engineering, Dalian Jiaotong University, 794# Huanghe Road ,116028,Dalian,China email:shencb@djtu.edu.cn Keywords: aluminum alloy; alclad; friction stir welding; microstructures; electrochemical corrosion Abstract.
Friction stir welding (FSW) was invented at The Welding Institute (TWI) of UK in 1991 as a solid-state joining technique that unites thermal and mechanical aspects to produce a high quality joint, and it was initially applied to aluminum alloys [1].
Then, in the ambient temperature solution of 0.2M NaHSO3 and 0.6M NaCl, by static weight loss experiment (gravimetric test) and potentiodynamic polarization curve, the effect of aluminum clad on the electrochemical properties of the similar weld obtained by FSW of 2524 was investigated.
The welded alloy showed the expected zones associated with friction stir welding, namely heat affected zone (Fig.1 (b)), thermomechanically affected zone (Fig.1 (c)) and nugget (Fig.1 (d)).
After intense plastic deformation, the pronounced physical irregularities were reduced and nearly chemically homogenous [3,4], the beneficial factors will overcome the increase of residual stress and make less prone to emerge localized attack microcells in the weld surface, then make FSW welding weld get more resistant to the aggression of HSO3- and Cl- ion.

Study and Implementation of Large-Diameter Fiber Termination used in High Power Dental Treatment I En Lin1, a, K-F Shiao2 1Professor, Department of Power Mechanical Engineering, National Formosa University, Yun-Lin, Taiwan, ROC. 2Student, Institute of Mechanical and Electro-Mechanical Engineering, National Formosa University, Yun-Lin, Taiwan, ROC.
The material property of fiber is treated as isotropic homogenous body.
There are three major factors affect fiber bending stress: fiber diameter, tilted angle and axial feeding increments.
The conical angle is related to emitting laser shape which might affect the results of gum disease treatment.
The film rotation speed (e.g., RPM) and abrasive grain size will affect the tip roughness directly.

This paper provides an examination of the efficiency of four PV systems installed across the South West and West regions of Romania, exploring the underlying mechanisms, influencing factors, and strategies for optimization.
Loss Mechanisms: Efficiency is reduced by factors such as recombination of charge carriers and resistive losses in the material and interconnections.
Numerous factors influence PV system efficiency: a.
Material Properties: Semiconductor material quality, purity, and bandgap characteristics impact efficiency.
Efficiency optimization strategies include: · Advanced Materials: Ongoing research aims to develop high-efficiency materials with improved properties, such as perovskite solar cells

Introduction Properties of polymer products depend on the morphology distribution within the product, which itself depends on both the molecular properties of the polymer used and the processing conditions applied during fabrication.
Not only mechanical properties depend on crystal structure [1–3], but also properties, like dimensional stability [4] and transparency [5].
For semi-crystalline polymers, the thermo-mechanical history of affects their crystallization kinetics during their processing.
Study of flow-induced crystallization in polymers has drawn much interest in recent years, because it implies the possibility of controlling and predicting the final morphologies and properties of semi-crystalline polymers in current transformation processes.
At low shear rate, the thermal effect is always predominant, but with the shear rate increasing, the flow affects strongly the crystallinity, and the shear process governs the crystallization.

The testing results show that RSC possesses excellent workability, good mechanical properties along with abrasion resistance, little shrinkage, and strong bonding with old pavement, which can well meets the requirements of pavement rapid restoration under the condition of not closing airport.
Aggregate property parameters are illustrated in Table 3 and Table 4.
Based on repeated tests, this study synthetically analyses various factors such as concrete strength, workability and initial setting time etc., and finally determines RSC mix as shown in table 5.
Brittleness factors of RSC in table 7 are in the range of 6.6 ~ 7.8 and less than those of common pavement concrete, which are in the range of 7.0 ~ 9.0.
Table 7 Cpmpressive & splitting strength and brittleness of RSC at different age Age 2h 3h 4h 1d 3d 7d 28d Compressive strength [MPa] 21.5 28.2 30.5 39.8 42.8 46.0 50.6 Splitting strength [MPa] - 3.2 3.6 4.2 4.4 4.5 4.9 Brittleness factor 7.2 7.8 7.1 6.6 6.7 7.1 7.7 Table 8 Shrinkage ratio of RSC at different age Age 1d 3d 7d 14d 28d 60d Shrinkage ratio 1.36E-04 1.70 E-04 1.80 E-04 1.90 E-04 2.17 E-04 2.26 E-04 Conclusions Based on foregoing test results and analyses of this paper, the following conclusion can be drawn: RSC not only possesses rapid-hardening and early-strength characteristics as well as good mechanical properties, but also has excellent workability, good abrasion resistance, little shrinkage, and strong bonding with old pavement, which can well meets the requirements of pavement rapid restoration under the condition of not closing airport.

Among the main geological factors to cause the disasters of mine safety production in deep mining, coal and gas outburst is the first major calamity that restricts colliery exploiting.
Among gas accidents, gas explosion, gas asphyxiation, toxic, outburst of coal and gas can cause casualties, destruction of facilities and properties.
Mine direct current electric method is greatly affected by tunnel space and has a small detection range.
Ray-based tomography requires the domain to be discretized in cells having constant physical properties.
The cell size is determined by two factors: the desired resolution and the practical computer limitations.