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The Manufacture And Maintenance Of Test Piece Count and metage the quantity of every materials,according to the mix proportion.put sand,cement,and rubber into agitator in proper order,stir in 60 seconds,then blend the water with water reducer,latex,tributyl phosphate,ethylene glycol slowly,stir in 30 seconds together,put break stone into agitator last,stir in 120 seconds,after that,pour out the mixture and test slumps.water and other additive should be mixed well-distributed by velocity mixing,the slumps barrel should be wash clearly,stuff one third of the slumps barrel when stuffing every time,in test.Test Piece for experiment is normal,adopt the method of stirring and jolt ramming by machine.according to (GB/T50081-2002)[5],after stuff the model,vibration close-grained to form concrete,take Test Piece into maintaining box, and then the form was removed after 24 hours, immediately moved then into the conservation
Fund 1 Liaoning Province Department of education project (Project Name: rubber modified cement concrete pavement performance study; the project number: L2012424); 2 Liaoning natural fund project (Project Name: road rubber modified experimental study; performance of concrete cement project number: 2013020087); 3 Shenyang Science and Technology Project (project Name: Crumb Rubber modified cement Concrete Pavement Performance application Technology); 4 in Liaoning province innovation teams in Higher Education Project (Project Name: environmental geotechnical engineering; project number: LT2012021).

The core of this heat exchanger is porous structure with a number of brazed joints [3].
A number of creep damage models of CCG have been proposed to predict the CCG in standard specimen.
The crack growth length was calculated by the numbers of damaged regular elements.
When many cavities have reached a critical size, they will coalesce to form micro-cracks along grain boundaries.

The secondary particles control the grain size during extrusion and rolling.
In a multiphase problem the phase-field variables, { }iφ , are connected by the constraint (no porosity is assumed) ( ) 1 , 1 N i i x tφ = =∑ r , (1) where N represents the number of involved phases.
For a multicomponent system the driving force for a phase transformation per mole of phase j is given by ( ) ( )1 m k k k k ij j j j i i k f c c cµ = = −∑D , (4) where jf is the molar Gibbs free energy of phase j, m is the number of components, kic is mole fraction of component k in phase i and kiµ is the chemical potential of the component k in the phase i.
The total number of computational nodes is 1150.

The reason may be resulted from the increase of the mole number of thiourea, which increased the concentration of H2S (because CS(NH2)2 hydrolyses to give H2S ), as a result, the excess H2S reacted with MoO2 to produce MoS2, reducing the impurity and improving the product purity.
The possible reason is that the concentration of reactants in the solution was getting higher with increasing the mole number of thiourea.
Because of high solution concentration, grains continue to grow and finally form the uniform flower-microspheres. 1μm 1μm 1μm Fig.4 SEM images of the different products prepared by changing the mole ratio of Mo to S in the system using NH2OH·HCl as reductant.
Therefore, the number of bubbles is less in the system of H2C2O4 than that in the system of NH2OH·HCl.

The phenomenon responsible for improved wear resistance in HSS cutting tools is the combined effect of increased number of η phase particles.
Analysis of the microstructure of HSS profile cutter shows that cryogenic treatment significantly alters the microstructure of these cutters, causing more finely and packed grains due to high bonding resulting higher wear resistance.
Care should taken while multiple tempering on the cutting tools as double tempering at 200 0C for 4hrs each resulted in the drop of hardness, hence it can be stated that excess number of tempering may soften the cutter by sacrificing hardness resulting in wear of the cutter at a faster rate.
[3] Susheel Kalia, Cryogenic Processing: A Study of Materials at Low Temperatures Low Temp Phys (2010) Volume 158: Numbers 5-6, 934–945 DOI10.1007/s10909-009-0058-x

SiC grinding papers of grain size from #180 to #2000 were used to preparation of the metallographic specimen.
Individual phases and numbered sites of the analysis are marked in the Fig. 9.
By reducing of number of the Si particles, their influence is reduced.
On the other hand number of possible initiation centres such as intermetallic phases and the porosity can increase.

The surface quality produced in surface grinding is influenced by various parameters such as [3], [4]: i. wheel parameters – abrasives, grain size, grade, structure, binder, shape and dimension; ii. workpiece parameters – fracture mode, mechanical properties and chemical composition; iii. process parameters – wheel speed, depth of cut, table speed and dressing condition; iv. machine parameters - static and dynamic characteristics, spindle system and table system.
Table 1 Grinding Parameters And Their Levels Symbols Controlled Parameters Level 1 Level 2 Level 3 D Depth of cut[mm] 0.05 0.10* 0.15 F Feed rate [mm] 0.2 0.3* 0.4 Dd Dressing depth of cut [mm] 0.01 0.02* 0.03 * : initial parameters Experimentation Table 2 Response Entered In The Design Layout Factor 1 Factor 2 Factor 3 Response 1 Run D F Dd Ra [mm] [mm] [mm] [μm] 1 0.1 0.4 0.03 0.19 2 0.15 0.4 0.02 0.23 3 0.1 0.3 0.02 0.16 4 0.1 0.2 0.03 0.16 5 0.15 0.3 0.03 0.22 6 0.1 0.3 0.02 0.16 7 0.1 0.4 0.01 0.18 8 0.1 0.2 0.01 0.13 9 0.05 0.2 0.02 0.21 10 0.1 0.3 0.02 0.16 11 0.1 0.3 0.02 0.14 12 0.05 0.3 0.03 0.2 13 0.05 0.3 0.01 0.2 14 0.1 0.3 0.02 0.16 15 0.15 0.2 0.02 0.21 16 0.05 0.4 0.02 0.19 17 0.15 0.3 0.01 0.21 The total numbers of experiments were selected as seventeen.
The number of centre blocks was selected as 5, to increase the efficiency of the optimum parameters.
The response surface methodology gives good results with minimum number of experiments.

Results and Discussion According to the analysis of electron microscopy data, increase the coating formation current density is proportional to grown thickness, as well as the increase in the porosity of the coating (Figure 1, Table 1), where i is coating current density, d is thickness, P is porosity, is average pore size, σ is \surface pore density (number of pores per mm2 of the surface).
i [mA/mm2] d [μm] P [%] [μm] σ [mm-2] 2.03 24 4.4 4.2 794 3.41 33 5.5 4.8 759 5.17 44 8.6 7.3 513 Thus, when the coating formation current density increases, the number of pores decreases, and the porosity of the coating increases, due to an increase in the average pore size.
This could be explained by increasing the number of strong discharges during PEO with increasing of formation current density.
Sharkeev et.al, Biocomposites on base of calcium-phosphate coatings, nanostructural and ultra-fined grained bionert metals, Tomsk, 2014

The cutting inserts were a fine grained WC-6% Co substrate coated with 3.0 to 3.5 μm thick PVD-TiAlN (KC5010) with ISO tool designations CNMG 120408FW and multi radii (wiper) geometry adjacent to the designated 0.8mm nose radius.
The cutting time was calculated by means of the numbers of the cutting passes.
Surface RoughnessMeasurement.The surface roughness of the workpiecewas measured using Mitutoyo, type: SJ-301device.Signals obtained from the unit are transferred to an analysis for displaying or printing the result.Cut-off length and number of observations for each pass measurement were0.8 mm and 3 respectively.
Acknowledgement The authors wish to thank the Ministry of Higher Education (MOHE),UniversitiTeknologi Malaysia (UTM) and Research Management Center,UTM for the financial support to this work through the Long TermResearch Grant Scheme (LRGS) funding number 4L804.

This large number of components results mainly from the limited deformation capacity of sheet metal, thus requiring the complex structure of the chassis to be subdivided into a large number of components.
There is a motivation at present to develop a vehicle structure such that the chassis consists of only a small number of components of complex shape.
Preconditions for the use of super-plastic forming include [3]: – Fine, equiaxial grains with a size ≤ 10μm – A highly stable structure and resistance to pore formation – Precise control of temperature and forming speed during the process.