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Introduction Electrical treeing is known as pre-breakdown phenomenon with complex properties in which involves electrical, chemical and mechanical processes [1-2].
Dielectric properties of epoxy nanocomposites.
Dynamic mechanical study of the factors affecting the two glass transition behavior of filled polymers, similarities and differences with random ionomers.

Therefore, the absorber material should have good mechanical properties and oxidation resistance at a high temperature; what’s more, high specific surface area must include to guarantee enough areas for thermal exchange [3~8].
So, the composite which is synthesized by the silicon carbide and andalusite will obviously endow the composite with good mechanical performance, thermal shock resistance, refractoriness and other properties.
This approach of these composites has the advantages of good thermal performance and mechanical properties.
Formula composition, firing system and microstructure are the main factors that affect the refractoriness.
The proportion of differential particles of SiC affects the properties of fired samples.

Experiments demonstrated that the Pd/C could catalyze dechlorination process effectively, which was affected by several factors such as reaction temperature, Pd/C ratio, and the induction of Pd/C catalyst, and that the dechlorination efficiency reached 88.2% under the optimal conditions of Pd/C loading ratio of 1.0% (mass), catalyst usage 12 g/L, H2 flowing rate 50 mL/min, and reaction temperature 90 for 120 min.
Due to its excellent film forming and protective properties, shellac is widely used in food industry, paint industry and pharmaceutical industry [1~10].
Compact chlorine affects the physicochemical properties of shellac.
On the one hand, it results in the poor storage properties[15].
For investigating the properties variation of low chlorine shellac, the samples of shellac with low chlorine prepared in this study was stored in refrigerator at 4～7℃.

The numerical methods are powerful tools in analysis and prediction, however, previous research treated the fluid too simply regardless of viscous and turbulence factors.
For CFD analysis, viscous model is also an important factor which affects the calculating results.
Taken into consideration the above factors and the constraints of CFL number and viscous model, our discretization of the model is shown in the Fig1.
The above structural equation can be arranged as: . (6) From Eq6, we can see that the fluid changes the structural dynamic properties by adding terms in the mass matrix, which decreases structural natural frequencies.
American Society of Mechanical Engineers, 2004

This ensures that the area of the base metal affected and exposed to the weld thermal cycle is reduced and hence probably generates less metallurgical distortion.
Introduction The heat condition during welding controls the character of the microstructure of the welded joints and hence the properties [1].
However, the influence of the heat transfer factor in terms of the cooling dynamics on the microstructural features and hence properties of welds have not been well investigated.
Influence of Cooling Conditions on Weld Macrostructure Figs.1 and 2 show the macro profiles of the coupons’ weld pools produced under different heat inputs and transfer factors.
Noorul Haq: Effect of friction welding parameters on mechanical and metallurgical properties of ferritic stainless steel, Int.

The actuator property is the key-point factor for the valve property and choosing high quality actuator is very important.
Both of these properties benefit for expanding valve working range.
So, it's necessary to research on the jet valve dynamic properties.
Research on dynamic properties of the valve body.
Mechanical properties of GMM are affected by mechanical environment and electromagnetic field.

The bubbles often lead to the emergence of internal cavities, loose structure, mechanical properties decline and bad surface roughness, all of which significantly affect the quality of the product.
Interferences from the surrounding and intrinsic differences of material characteristic are the factors leading to differences of bubble image.
At the same time, this detection of edge has a multilevel nature which will affect the statistical analysis later.
The bubble problem has become an important factor of vacuum casting product quality.
Fig.4 Region section Fig.5 Effect of smoothing Fig.6 Effect of multiply sharpening operation Fig.7 Image Binarization Acknowledgements This work is supported by Innovation Foundation of SHU (A.10-0109-08-010), Shanghai Science Foundation for the Excellent Youth Scholars (B.37-0109-08-004), and the fund of Shanghai Key Laboratory of Mechanical Automation and Robotics (D.10-0109-09-006).

The purpose of this study was to evaluate the mechanical interaction between the cushion and user of wheelchair.
Research has shown that some of the main factors that affect seating comfort are seat-interface pressure distribution and pressure change rate.
To generate the models, their geometries were defined, material properties determined, and loading and boundary conditions prescribed.
b) Material properties Three different materials were included in each model: bone, soft tissue, and cushion, Average values of Young's modulus of elasticity and Poisson's ratio for bone were taken from the literature (Todd et al., 1994).
This study is an attempt to develop and validate a 3D FE model to study of mechanical responses in the deep tissue in the buttock-thigh subjected to sitting load with consideration of a true sitting configuration, realistic boundary conditions and realistic material properties corresponding to soft tissue.

The electro discharge machining process is one of the most practical non-traditional machining method which is not affected by the hardness and physical properties of the workpiece.Many researchers haveinvestigated the machining of advanced materials and also useof some controllable parameters like gap current, pulse on time, pulse off time, gap voltage, and polarity.
Results showed that input current, pulse on time, duty cycle are significant factors for EWR.
Singh and Singh [11] have studied the effect of cryogenic treatment on the machining characteristics of titanium in electric discharge machining.It is observed that from literature review electrical and thermal properties of the materials can be improved by cryogenic treatment And better electrical properties are essential for workpiece and electrode materials in EDM.
Table 1 and 2 show the properties of electrolytic copper and Monel400 alloy respectively.
Table 1 Physical, mechanical and chemical properties of copper Copper 99.9 % Density 8.94 gm/cc Tensile strength, ultimate 220.632 MPa Tensile strength, yield 68.947 MPa Table 2 Physical, mechanical and chemical properties of Monel400 alloys Nickel 63 Copper 34 Density 8.8 gm/cc Tensile strength, ultimate 550MPa Tensile strength, yield 240MPa Melting point 1300°C Figure 1 Experimental setup Results and Discussions This section discusses the results of cryogenic treatment of Monel400 alloy along with electrical parameters and external magnetic strength on EDM performance measures namely MRR and TWR.

The properties of YAG nanopowders obtained under different synthetic process were studied by XRD, TG-DSC, FT-IR and SEM.
Introduction Yttrium aluminum garnet (YAG, Y3Al5O12) polycrystalline transparent ceramic has turned into a potential laser host material because of its excellent properties, such as special compose, relatively stable lattice structure, and good thermal, mechanical, optical properties.
YAG nanopowders with excellent property is very important in the process of fabricating high-performance YAG transparent ceramics, consequently, many researchers pay more attention to the study of YAG nanopowders at present.
Dropwise speed and mode were major factors which affected the composition of product.
That soft agglomerate was mainly due to the bridging of adjacent particles with water by hydrogen bond which can be easily broken by mechanical force.