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Investigation on surface grinding of Ti-6Al-4V using minimum quantity lubrication Guoqiang Guo1, a, Zhiqiang Liu1, b, Xiaohu Zheng1, c and Ming Chen1,2, d 1School of Mechanical Engineering, Shanghai Jiao Tong University, P.
That would cause skin disorders and affect the human dietary and respiratory system.
Because of titanium alloy’s poor thermal properties, grindabilty of Ti-6Al-4V (Ti-6-4) imposes lots of constraints.
This proves the improved lubrication property of MQL oil, it could penetrate into the grinding interface and form a durable tribofilm to improve the sliding, plowing and cutting performance of each grain [2, 10].
Combinations of these factors result in a decrease in workpiece surface roughness.

) tunnel structure of shallow overburden, can effectively reduce the line slope and shorten the length of cross-strait terminal; 2) tunnel cross-sectional shape and size selection is flexible and can be adapted to the passage of vehicles and ancillary pipeline clearance requirements; 3) tunnel rigid pipe section and the section between the flexible joint can be adapted to the river bed, all kinds of sea-bed foundation bearing capacity and deformation characteristics; are well suited to rivers strait at the bottom of the soft ground; 4) pipe section pre-construction methods to meet the long section prefabricated waterproof and reliable performance; 5) pipe section pre-engineering, cross-strait terminal construction, underwater foundation trench dredging and foundation backfill and other construction the process can be routine, and scientific construction organization and effective control of the duration, suitable for a shorter duration of the program; 6) during the operation does not affect
Germany and Japan and other countries was further improved on this basis, Germany phoenix company has developed a phoenix water stop (Figure 1(b)), the more superior mechanical properties, even the Netherlands Zeebrufer tunnel Nowd tunnel also used this waterstop.
Floating transport are influenced by the floating distance of transport, channel depth, hydro-meteorological and other factors.

Numerical Simulation of Quenchant Flow Characteristics in Large Quench Tank Hui Sun College of Mechanical Engineering, Shanghai Dianji University, Shanghai, China sunh@sdju.edu.cn Keywords: flow field, large quench tank, numerical simulation Abstract.
Introduction Quenching is an important technological process that involves the cooling of a heated workpiece in order to modify its properties [1].
Moreover, the flow field in the quench tank is closely related with varied factors, such as quench tank structure, agitator system and workpiece, which make it very difficult to acquire the detailed flow field information by experimental method [2].
The above figures suggest that, adding an inner core in the center zone of the tank does also not affect the flow field in the quench tank significantly, but the central stagnant flow zone further minished.

Introduction Sulfur is a harmful element in the liquid steel in general, sulfur in the liquid steel is easy to react and produce inclusion like manganese sulfide, ferrous sulfide and so on, affect the mechanical properties of the steel seriously.
Analysis found that in the process of RH treatment, SiO2% have small changes , within 1%, main factors that change basicity is the consumption of CaO for desulfurization.

Microstructure evolution in sintering of alumina–zirconia ceramics simulated by a modified phase field method Chengyang Wei1,a and Saiyi Li2,b 1School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China 2School of Materials Science and Engineering, Central South University, Changsha 410083, China awcyxhl@gmail.com, bsaiyi@mail.csu.edu.cn Keywords: Sintering; Phase field method; Grain growth; Densification Abstract.
Although substantial researches have been conducted on optimizing the processing conditions to reduce grain size and porosity and thus to obtain favorable properties in the sintered ceramics [5-8], experimental studies alone are insufficient to gain real-time information about the microstructure evolution in the different stages (e.g. initial, intermediate, and final stages [1]).
It is also noted that the relative green density affects not only the average grain size but also the distribution of the grain size in the ceramics [14].
Overall, these two factors have more apparent effects on the grain size than on the densification.

So far, the majority of the studies on porous NiTi SMAs have focused on fabrication methods, microstructures and mechanical properties [1-6], while less on martensitic phase transformation of porous NiTi SMAs [7].
Since the superelasticity of porous NiTi SMAs has an intrinsic correlation with martensitic transformation, and Ni4Ti3 particles in porous NiTi matrix may directly affect the unique superelasticity.
G0=C44=34GPa=34×109 J/m3, M0=1.008×10-26 mol 2/(J·m·s) [13] are chosen as the normalized factors for energy and mobility, respectively.

The impeller is an important component of the centrifugal fan, and its structure directly affects the performance of the fan.
Define material properties of the impeller according to the known conditions, and set the appropriate units.
And the maximum stress is much smaller than the allowable stress ([] =67MPa, allowable stress = yield limit / safety factor, a safety factor of 3.5), meeting the strength requirements.
In the Mechanical of ANSYS Workbench, there are two solvers, namely iterative and direct.

Mechanical properties of the materials considered for both systems subjected to finite element numerical analysis Materials Modulus of elasticity E [MPa] Poisson’s ratio n Density r [kg/mm3] Austenitic stainless steel 1.93×105 0.31 7.86×10-6 Porous bone 100 0.27 1×10-6 Periosteum 15.3×103 0.28 1.8×10-6 Compact (cortical) bone 17.5×103 0.28 2×10-6 The discretization stage was followed by a stage of determination of the pressures and strains acting on the whole system.
The most important is the fact that the tissue of the femur is even more affected, mainly around the epiphysis.
The contact pressure between the stump and the cup is a defining factor for prosthesis functioning and wear determination.
Dependence (multiple regression, structural equation modeling) and interdependence (factor analysis, multidimensional scaling) multivariate analysis methods are suggested for the purpose of developing, testing and refining the measuring scale.

Introduction Advanced engineering ceramics with its excellent physical and chemical properties as wear resistance, corrosion resistance, high hardness, and high temperature resistance, has been widely applied in the fields of aviation, aerospace, engineering machinery etc [1].
In aeronautics and astronautics, by the function of multiple factors, mini crack and tiny air holes will affect on the performance of ceramic materials, even cause disastrous consequences.
Known by the first law of thermodynamics, the heat flux generated by the friction of contact surface can be expressed as [12]: (2) Where, γ is friction mechanical energy into heat energy ratio coefficient.

The obtained results show that the presence of the internal fluid and material properties have a great influence on the vibration characteristics of the shell.
The obtained results show the marked influence of the orthotropic material properties, geometry, fluid flow and load parameters on the dynamic stability boundaries and resonance curves.
Table 1 - Shell physical properties.
As observed, the material properties, flow velocity and geometric ratios strongly affect the instability boundaries.
For a harmonic axial load and harmonic lateral pressure both the parametric instability boundaries and resonance curves are strongly affected by geometric ratios, material properties and the presence of fluid displaying coexistence of chaotic, stable and unstable paths.