Search results

The paper analyzes how the grade of wheel and the grinding speed affect Ra surface roughness parameter.
Despite its prevalence in mechanical engineering, creep-feed grinding of titanium-based alloys is still believed to be the most problematic process.
Grinding parameters being altered while the abrasive wheel moves along the workpiece does affect the roughness of the machined surface (Fig. 2).
The abrasive wheel characteristics do not have a significant effect on the general morphology properties.
Bairamov, Factors affecting the surface roughness in the deep grinding of titanium alloys, Russian Engineering Research. 7 (2015) 549–553

Several parameters affect the properties of Portland cement and one of these parameters is the cooling rate of the clinker.
Therefore, the rate of cooling is one of the most important parameters affecting clinker production (i.e. cement industry) [4].
They gave a new method for controlling the clinker properties in addition to reducing the size of the cooling unit.
This feature is important to improving clinker properties.
Goto, Factors influencing the phase constitution of a lite in Portland cement clinker, Cement and Concrete Research, 12, 301- 308, (1982)

This structure gives ZnO its unique properties that exhibits several properties such as optical properties, electrical properties, piezoelectricity, thermal stability, chemical stability, antibacterial properties, UV absorption, and photocatalytic activity.
The choice of synthesis method depends on factors such as the desired particle size, morphology, and purity of the final ZnO product, as well as the specific application requirements.
It's worth noting that the specific properties of ZnO can vary depending on factors such as its synthesis method, crystal structure, and doping elements used.
Overall, the results suggest that the introduction of Ag into the ZnO-Ag composites significantly affects their optical properties, leading to improved absorbance characteristics in both the UV and visible regions [18-20].
The value of A is determined by factors such as the index of refraction and the effective masses of electrons and holes.

Seawater Flow Characteristics and Drag Force Variation with Inflow Angle in Tidal Current Turbine System Jong-Won Kim1,a, Sang-Ho Lee2,b 1Graduate school of Mechanical Engineering, Wonkwang University, 570-749, Ik-san, Cheonbuk, Republic of Korea 2Department of Mechanical and Automotive Engineering, Wonkwang University, 570-749, Ik-san, Cheonbuk, Republic of Korea akjw2kkin@wonkwang.ac.kr, blsheagle@wonkwang.ac.kr (corresponding author) Keywords: Seawater flow characteristics, Drag force, Tidal current turbine system, Shroud, Inflow angle.
Seawater velocity distribution is largely affected by the current direction flowing into the turbine system including shroud.
As recent studies, fluid flow characteristics in the diffuser-type shrouds of power generation system which is operated by river flow were analyzed, and the turbine efficiency was predicted with the momentum source factors through CFD [1, 2].
Tidal current velocity (u∞) is assumed to be 2 m/s as inlet boundary condition, and physical properties of seawater are used at the fluid temperature of 17 ˚C.
Gaden, An investigation of river kinetic turbines: performance enhancements, turbine modeling techniques and an assessment of turbulence models, Master’s thesis at the University of Manitoba, Department of Mechanical and Manufacturing Engineering. (2007)

Table 1 The characteristics of shaft in Cretaceous strata Serial number Name Unit Auxiliary shaft 1 Wellhead design elevation m 1385.5 2 Shaft depth m undecided 3 Shaft lining structure Double cast-in-place reinforced concrete 4 Freeze depth m 564 5 Net diameter m 10.1 6 Wall thickness m 1.65～1.95 The freezing pressure role in frozen wall is mainly affected by the deformation of the frozen wall,soil properties, formation depth,the frost heaving characteristics of thawed soil refreeze back of the wall,the temperature of frozen wall and the construction technology and other factors.
Conclusion The main factors affecting the freezing pressure of cretaceous strata is almost the same, that is mainly affected by the construction of dynamic load (blasting), stress release after rock excavation, frozen wall deformation, hydration heat of concrete and the iMPact of temperature beside the shaft, and gradually increased with depth.
The interaction between frozen wall and shaft is related to lithology, depth of layer and frost heave of the refreezing thawed soil, temperature beside the shaft, and construction technology and other factors.
Experimental research on the mechanical parameters of frozen pipes under low temperature [J].

"Fiber Reinforced Polymers FRP" provide good alternatives to regular reinforcing steel, as their resistance to environmental factors specifies them and provide durability, in addition to their appropriate prices.
The interaction through GFRP sheets and the concrete surface has considered as the key factor for achieving the mechanical flexural property.
The fiber incorporation can effectively improve important properties of concrete like the brittle failure of concrete, can control element sizes and developing crack defects, thus eventually improving mechanical properties, especially durability for concrete structures (5).
Table 2 shows the Materials Properties.
Table 2: Materials Properties Properties of Steel and GFRP used in Beams Item Size [mm] Modulus of Elasticity [MPa] Tensile Strength [MPa] GFRP/ Rebar 18/ diameter 41x103 744 Properties of GFRP Laminates and Resin used in Beams Item Density Modulus of Elasticity [MPa] Tensile Strength [MPa] GFRP/ Laminates 2500 [kg/m3] 72.5x103/ Tensile Modulus 2270 Resin/Sikadur330 1.3 [kg/l] 3400/ Flexural Modulus 30 Properties of Steel used in Beams Item Size [mm] Modulus of Elasticity [MPa] Yield Strength [MPa] Main Steel 16/ diameter 200x103 400 Stirrups 8/ diameter 200x103 360 Experimental Results and Discussion Test results have arranged as shown in Table 3.

Chandrappa 1, a, Joel Hemanth 2, b 1Associate Professor and Research scholar, Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumkur - 572 103, Karnataka, India 2Dean.
However, the properties of Ti and Cu have great differences in crystal structure, melting point, heat conductivity, and linear expansion coefficient.
Therefore, surface treatment and selection of bonding temperature and loading are basically important factors of the diffusion bonding process.
Other factors such as thermal conductivity, thermal expansion, and bonding environment also affect the bonding process, particularly at high bonding temperature. 
Influence of microstructure of Ti-Al based alloy on the mechanical properties at elevated temperature [J].

Subsequently, segregation of alloying elements takes place in TWDI casting, which diminishes its mechanical properties [6].
As a result, to overcome problems associated with producing TWDI, understanding of the mensioned factors is vital [11].
It is reported that mechanical properties of TWDI castings, especially strength and ductility, depend directly on graphite roundness; the more roundness of graphite nodules, the higher mechanical properties in TWDI castings [11].
The graphite nodule diameter has a remarkable effect on mechanical properties of TWDI casting [16,17].
As the precipitation of iron carbide in the microstructure severely diminishes the mechanical properties, especially ductility [2,17,18], it is important to produce carbide-free microstructure to make sure the soundness with conjunction to optimum mechanical properties of the TWDI castings.

Sintering effect on the structural properties was investigated. 
In previous studies on manganese doped cobalt ferrites, it has been shown that high mechanical stability and inter related magnetic properties make them good for sensor application [3].
Characterization Results Structure related properties.
Magnetic properties.
The magnetization behavior showed that doping of Mn has affected the properties of CoFe2O4.

Their identical properties such as high surface porosity and perfectly patterned pore structure, which is combined with mechanical strength make them ideal for many applications such as microorganism removal, blood filtration and protein purification.
Plasma treatment is widely used to tune the surface properties of many polymers (e.g.
SU-8, Polyimide and PDMS) to promote adhesion or to enhance wetting properties [6,7].
PDMS, PMMA, PC, SU-8 and, etc.) to promote adhesion or to enhance wetting properties [14].
It should be noted that membrane fouling related to many factors such as membrane properties (i.e. pore size, material, hydrophilicity/hydrophobicity and, etc.), solution properties (i.e. concentration, particle size, and, etc.) as well as operation conditions (i.e. pH, temperature, flow rate and, etc.) which all need to be take into account during a filtration process [1-3].