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γLF γSF θc γSL Figure 1 Wetting is affected by large number of factors including substrate surface roughness, flux, temperature, atmosphere, liquid properties and trace elements.
In lead free solder systems, wettability becomes a concern due to the important effect to the solder joint properties.
It gives good mechanical interlocking between the two interfaces [1].
,Jing,H.Y. & Wei,J., Effect of Ni-Coated Carbon Nanotubes on the Microstructure and Properties of Sn-Ag-Cu Solder, Electronic Components and Technology Conference (2010) 979-984

Local eddy current and viscous dissipation of stream will cause the temperature difference of cavity, which led to the shift of resonant frequency affecting the stability of sensor.
Wet steam problems, to a great extent, affect the safe and economic operation of the steam turbine.
Table 1 The material parameter of cavity Material Invar(4J32) Red Cooper(Cu) Density(kg/m3) 8100 83000 Thermal Expansion Coefficient(℃-1) 1.06×10-6 1.8×10-5 Young's Modulus (pa) 1.34×1011 1.1×1011 Poisson's Ratio 0.3 0.34 Thermal Conductivity (w/m·℃) 13.9 401 Specific Heat (J/kg·℃) 512 390 Analysis of calculation results The result of cavity body thermal deformation under different conditions (a) The x=0 section pressure distribution of flow field (b) The x=0 section temperate distribution of flow field (c) The cloud temperature distribution of resonant cavity (d) The total deformation nephogram of resonant cavity Fig.3 P=5KPa,Ma=0.3,The calculation results of fluid-solid coupled Fig.3 is the fluid-structure coupling calculation results of the condition, p=5Kpa, Ma=0.3.The effective part of inner surface of cavity size is the key factor of altering cavity resonance frequency.Tab.2, the thermal deformation calculation results of inner effective surface of cavity
Steam wetness Y is related with the thermal properties and dielectric properties of two phase wet-vapor liquid and relative deviation of resonance frequency of cavity ().
Theoretical and experimental research on resonant cavity dielectric perturbation technique to measure steam humidity [D].Baoding, School of energy power and mechanical engineering, north China electric power university,2012.

Four grades of commercial, silicon based magnetic fluids of hydrophobic properties were tested in a single stage sealing system.
Certainly, there are many additional factors both geometrical and dynamic that affect the ability of the seal efficiency in water environment.
Four grades of magnetic fluids of high hydrophobic properties were investigated.
The water pressure level is an important factor that affects the magnetic fluid seal operation in water conditions, but that problem was not the subject of that study.
Magnetic and viscous properties of magnetic fluids compared with critical pressure and critical motion velocity values obtained in experiments with magnetic fluid seals operating in water.

The goal of this research is to optimize the green strength properties of Titanium alloy Ti-6Al-4V in the injection molding stage by mixing with palm stearin (PS) binder system.
The total DOF for six factors, each at three levels and three interactions is 22.
Thus, without considering any interaction the result is a combination of A2, B1, C0, D1, E2 and F2 as the best set of factors.
It shows that any changes of these factors simultaneously will affect the green density.
Factor D, factor F and all interaction factors are not significant affecting for high green density even though it give contribution during injection molding but the confidence level are less than 90%.

These ensure interaction between the two parts of the cross section, transfer longitudinal shear forces and affect stiffness and bearing capacity of the coupled structure depending on the distance of the supports [10].
With regard to the greater dispersion of mechanical-physical properties of elements with higher age, it is recommended to perform statistical analysis [4].
U1 22590, Industrial Property Office, Czech Republic, Prague, August 2011 [2] R.
Mencl: Estimation of properties of materials for compound wood – timber ceilings (2007).
Sandanus: Parametric study of the factors affecting the resistance of a composite timber-concrete cross-section (2007).

Surface cleanliness mainly affects the microscopic surface quality.
The material properties are shown in Table 1.
Table 1 PMMA Material properties property Density Elastic modulus [Gpa] Poisson's ratio Thermal conductivity[W/m-K] Specific heat [J/Kg-K] Thermal expansion coefficient[1/k] Value 1.19 2.74 0.355 0.2 1500 7×10-5 Boundary Conditions.
The bottom of the microchannel is not directly affected by the pressure, in order to maintain the original shape, resulting in upward deformation.
Friction factors in smooth trapezoidal silicon microchannels with different aspect ratios [J].

They are operated under an acidic, humid and high temperature conditions for long time so the chemical and mechanical properties of gaskets are crucial to the electro-chemical performance of fuel cell.
That may be due to the concentration of HF acid affecting the aging of silicone rubbers.
This indicated that the exposure time and exposure temperature are both the key factors affecting the degradation of silicone rubbers.
Lee, Assessment of mechanical properties of fluoroelastomer and EPDM in a simulated PEM fuel cell environment by microindentation test, Mater.
Lee, Microindentation Test for Assessing the Mechanical Properties of Silicone Rubber Exposed to a Simulated Polymer Electrolyte Membrane Fuel Cell Environment, J.

Introduction Currently, composite materials that combine the properties of the resin and sorbent began to find use in wastewater treatment technology.
Nature and properties of the sorbent, the nature and charge of groups of organic ions are essential for the adsorption of organic ions .
We have identified the main physical and chemical properties of the test oil waste.
Stotsky, Abiotic factors affecting the toxicity of lead to fundi, J.
Kuzmina, Study of links between physical and chemical properties of industrial wastewater and methods of cleaning, J.

Micro-mechanical and tribological properties as well as coating adhesion to the substrates were investigated.
Properties arise from their specific structure where hard nanocrystallites nc-MX are placed in a softer, amorphous matrix.
To provide advantageous mechanical properties of the coatings, nanoparticle size should not exceed 5 nm, and the distance between their boundaries (the thickness of the matrix material) should not be too large (within 1÷2 nm [8,16,17]).
Amorphous carbon (a-C) is well known material characterized by excellent tribological properties [18-20].
Such low friction coefficient is due to excellent tribological properties of amorphous carbon matrix.

Materials such as titanium alloys, carbon-based composites, and various types of stainless steels offer the required properties, with their ability to resist corrosion and thermomechanical cycling being an important aspect [1].
Studies have shown that the application of thin nitride-based coatings significantly improves the thermal and mechanical resistance of shock absorbers [3].
This information is then used to design new solutions with better properties [5].
In these simulations, Finite Element Method (FEM) analysis is used to investigate in detail the mechanical and thermal stresses in different parts of the damper [5].
The decibel scale is an exponential measurement, and a noise reduction of just 10 decibels equates to a factor of 10 less energy to the ears.