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Substrate processing includes rust and oil removal, sand blasting and cleaning. 2.1.1 Substrate selection Different diamond brazing tools have different requirements for mechanical properties of the substrate.
We selected #45 steel as substrate material. 2.1.2 Substrate surface mechanical treatment A new chemical bond will be formed on the substrate surface in brazing.
The treatment quality of the substrate surface directly affects the quality of the product, which is one of the key factors to ensure fine results.
Table 1 Standard of the hydrochloric acid rust removal process g/L Name Hydrochloric acid Ammonium chloride Temperature Time Process parameters 150 2 Room temperature Until rust is completely removed Contaminated oil in industry is nothing more than the 3 categories of mineral oil, vegetable oil and animal oil, or 2 categories of saponifiedoil (animal oil and vegetable oil) and non-saponifiedoil (mineral oil) by chemical properties.

Corrosion mechanism of bearing pile Freezing and thawing cycle mainly affect concrete’s pore structure, permeability and reaction of the salt solution, which caused concrete destruction and damage.
The design criterions are established by the durability, mechanical properties and the workability which is implementing the harmonization of high durability, high performance, easy maintenance, high workability and environmental compatibility
(a) (b) (c) (d) (e) (f) Fig.4 Construction progress Through the field detection and monitoring for nearly three years, the results are as follows: ① Cushion cap’s potential and current are changing in a small range through the anode ladder test, The analysis shows the anode ladders are in good condition according to the critical value judged by the anode ladder corrosion potential and current ,so the concrete iron are out of corrosion. ②The test voltage is great, through the chloride ion electrode test and the analysis of the relationship between the response of chloride ion content in the negative logarithm and chloride ion potentiometric response of electrode sensor, which explaining that the chloride ion content is still at a very low level. ③The influencing factors of the protective effect and site environmental
Foam concrete is a porous material which formed with mechanical methods.
(1) Raw materials and mix proportion of foam concrete 1) Raw materials ①The ordinary port land cement is from the group of Shuangma in Sichuan Province , 42.5R; ②The high alumina cement is from refractory material factory in Yindu ,Guizhou Province , A-50; ③The foaming agent is a kind of solid foaming agent whose type is CCW-95 developed by China Building Materials Academy; ④The water reducing agent whose type is FDN II is produced by the group of Panshuang in Chengdu; ⑤The fly ash is I class of Huaming brand. 2) Mix proportioning (Shown in table 2) Table 2 the mix proportion of foam concrete Ordinary port land cement（kg） High alumina cement（kg） Fly ash (kg) water reducer (kg) CCW-95 foaming agent (kg) W/C 60 8 25 0.6 3 0.5 (2) Properties testing of foam concrete 1) The preparation of foam concrete: First, make foaming agent aqueous solution prepare into a bubble with physical methods , Then add the foam into the slurry which is constituent

Introduction As the most important mechanical components, the axle box bearings are widely used in the train.
The bearing failures will lead to abnormal vibration and noise and may even lead to train accidents, causing great property losses and casualties.
It is good at dealing with nonlinear complex small samples as a result of its better generalization ability [5], but the classification accuracy of SVM is affected by the difficulty to select optimal parameters.
According to structural risk minimization principle, (6) is equivalent to the optimization problem (7) where is slack variable and C is error penalty factor.
In this paper, eighteen feature parameters are selected, including five dimensionless statistical parameters: Kurtosis Value, Crest Factor, Clearance Factor, Impulse Factor, Shape Factor; five frequency parameters: Centroid Frequency, Mean Square Frequency, Root Mean Square Frequency, Frequency Variance, Frequency Standard Variance; eight wavelet parameters: the eight band energy values by decomposing the signal with 3 level wavelet packet.

Shuhaimi Abu Bakar2,c 1Department of Mechanical Engineering, Faculty of Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia 2Low Dimensional Research Centre, Department of Physics, Faculty of Science, University of Malaya, 50603 Kuala Lumpur, Malaysia anzieanaz@gmail.com, bmsfaizul@gmail.com Keywords: Metal organic chemical vapor deposition (MOCVD), reactor geometry, thin film, LED application.
In addition with unique physical properties of these optoelectronic devices, they also have temperature requirements, i.e., they should have functionality at high temperatures [2].
Gravity is an important factor that influences flow patterns of the gases and thus the growth rate and uniformity in a metal organic halide vapor phase epitaxy (MOHVPE) reactor [9].
Another important parameter that affects the flow pattern of the gases is the diffusion coefficient.
Accurate temperature distribution calculation is very critical in this study since both diffusion processes are strongly affected by the temperature.

(5) where Rm and Rk are the estimated resistances of the structure evaluated with the measured and characteristic values of the mechanical properties, respectively.
Concrete and reinforcement properties are listed in Table 2.
Indeed, the results of a parametric study, carried out with varying tensile strength and fracture energy of concrete, has shown that these mechanical properties have almost no influence on the peak load.
Table 3 - Concrete and reinforcement properties.
Concrete properties fcm (N/mm2) dmax (mm) 53 10 Reinforcement properties F(mm) As (mm2) Es (N/mm2) fym (N/mm2) ftm (N/mm2) 16.0 200 200000 400 600 Figure 2 - Case RB2.

Material Properties of Titanium Slloy The composition of titanium alloy TC4 material was Ti-6Al-4V, which belongs to (α+β) type titanium alloy with good mechanical properties and specific strength.
Therefore, the chip breaking of generation of incomplete geometric mainly caused by geometric factors.
Combination of matching vibration parameters [amplitude (A), cutting speed(V)] and cutting parameters [rotational speed (n), feed (f)] affect the vibration drilling chip breakage.
Cutting Fluid: Emulsion No. 20 mechanical oil.
Therefore, the No. 20 mechanical oil was selected as the test cutting fluid.

Geometry of the porous ceramics, especially the roughness of hole surface, microporous, hole factors etc. affect the osteogenesis ability of this kind of compound[4].
Further study will be carried out on controlling pore size and shape, mechanical property and temperature condition of mesoporous hydroxyapatite prepared by using the Polystyrene microspheres as template.

Tunneling is modeled by including selected vibration modes at the quantum mechanical level.
The calculation of properties of any material can be assembly of nuclei and electrons.
Internal and external transfer integrals are two key parameters governing the charge transport properties of organic semiconducting materials.
The metal can be change with specific material atom that changes the characterization of this material both physical and chemical properties.
The electric field affects mobility calculation and hopping rate in CuPc molecule.

Particularly, in the use of prestressed components, steel suffers a certain of loss, when it is stretched, it affects the quality and the mechanical properties of components[1].
In this experiment we tested mechanical properties of the cold-rolled thread steel and cold-drawn smooth steel for the same base material, using WAW-2000 computer-controlled electro-hydraulic servo universal testing machine to measure the mechanical properties, the length of specimen is 500 mm and the diameter is 5.5 mm.
Anchor Properties.
The cold-rolled thread steel is a kind of new energy-efficient building material with higher strength, better plasticity, stronger anchorage and more comprehensive mechanical performance, whose properties are superior to that of the cold-drawn smooth steel, and the small-diameter cold-rolled thread steel manufactured in the active ways has better comprehensive mechanical properties.
Huang: Organizations and Properties of High Strength Finishing Rolling Thread Steel, Shenyang Northeastern University, 2000 [7] Z.L.

Thus, limited fiber damage and residual stresses will occur, leading to good mechanical material properties.
Mainly the specific properties taking into account the density of materials are important factors in lightweight engineering; however, they are not in any case superior for unreinforced light metals like aluminum or magnesium alloys as compared to steel, because the absolute mechanical performance of light metals is generally lower.
The orientation of fibers has a significant influence on the final mechanical properties of the composite.
Results - Mechanical Properties.
Results - Mechanical Properties.