Search results

The brittle fracture was caused by structural factors.
The brittle fracture was caused by structural factors.
The actual fracture appearance is not only affected by materials toughness, but also structural factors and impact velocity.
The brittle fracture was caused by structural factors.
The brittle fracture was caused by structural factors.

Plasma jet acquisition and image processing technology Ziyu Zhao1,a, Guangtao Zhou1,b, Bibo Xiao1,c and Suzhi Zhang1,d 1College of Mechanical Engineering and Automation, Huaqiao University, Xiamen, Fujian, 361021, China azyzhao@hqu.edu.cn, bzhouguangtao@hqu.edu.cn, cxiaobibo@hqu.edu.cn, dzhangzhs@hqu.edu.cn Key words: Plasma jet, LabVIEW, Image acquisition, IMAQ Vision, Image processing Abstract: Experimental system of CCD real-time acquisition is developed according to high temperature property of plasma jet.
Therefore, jet direct effects the quality of the molten powder and flight characteristics, and thus affecting the shape quality.
（2.3） Where: K is a constant related with the atomic properties; is the particle density; is the particle partition function; as the excitation potential; is the Boltzmann constant; βj,k is the Abel transform coefficient, N is the radial total number of points; is the spectral radiation intensity of the X-direction.
As cost factors taking into account, we selectes general image acquisition card.
Results and analysis In the process of plasma spraying, plasma jet is affected by many factors, including gas type, flow rate and power parameters, which directly affect the temperature distribution and jet flow field.

The settlement of subgrade and the inclination angle of foundation are affected by vertical load, overturning moment, foundation size and mechanical properties of subgrade soil.
Through calculation, we got the variations of settlement and inclination angle of foundation for these factors.
Table 1 Influences of factors on settlement Vertical load [N] Settlement [m] Foundation width[m] Settlement [m] Deformation modulus of subgrade [MPa] Settlement [m] 117879 0.00159 2.5 0.00144 10 0.00283 119879 0.00162 3 0.00158 12 0.00236 124879 0.00168 3.7 0.00178 14 0.00202 132173 0.00178 4 0.00188 15.9 0.00178 139879 0.00188 4.5 0.00205 18 0.00157 149879 0.00202 5 0.00222 20 0.00142 Table 2 Influences of factors on inclination angle of foundation Overturning moment [Nm] Inclination angle [*10-3] Foundation width [m] Inclination angle [*10-3] Deformation modulus of subgrade [MPa] Inclination angle [*10-3] 60000 0.355 2.5 2.035 10 0.998 80000 0.474 3 1.178 12 0.832 106028 0.628 3.7 0.628 14 0.713 150000 0.888 4 0.497 15.9 0.628 200000 1.184 4.5 0.349 18 0.554 300000 1.776 5 0.254 20 0.499 Conclusion Transfer matrix method is applied to the calculation and analysis of settlement and inclination of gravity foundation.
The factors that affect the settlement and inclination of foundation and their influences are analyzed.

Removal efficiency and impact of the factors will be studied by expriments.
In which although a activated carbon, but its poor mechanical strength; while silica is generally 600 ~ 700 ℃, has begun a noticeable sintering, which is not conducive to the load of metal oxides.
In comparison, Al2O3 has large surface area, mechanical strength, strong adhesion with the active substance, and not easy to come off, so Al2O3 loads metal oxides as a carrier and studies them in the ozone in the catalytic reaction.
Baking temperature is the main factor affecting catalyst performance.
Surface Hydroxyl Groups is an important surface properties of metal oxides in the water, organic compounds adsorbed on the catalyst surface after the catalytic decomposition reaction to continue.

Table 1 Chemical composition analysis results of the cracking axis explanation chemical composition C Si Mn P S cracking axis 0.45 0.30 0.62 0.015 0.008 technical conditions 0.42/0.50 0.17/0.37 0.50/0.80 ≤0.040 ≤0.040 (2)Measuring mechanical properties Cracking shaft from the mechanical properties of the sample measured results are shown in Table 2.
For comparison, the table also lists the national standard GB3077 cracking on the mechanical properties of the alloy steel shaft material 45 required value.
Table 3 compares the mechanical properties of carbon steel containing carbon content of the three morphology of 0.45%.
In fine grain steels, widmanstatten mechanical properties of steel do not show harmful effects.
It seems coarse grains have an adverse effect on the mechanical properties of steel, when there appeared widmanstatten particularly evident.

If there are any shrinkage cavities, mechanical properties and air tightness of casting will decrease significantly.
The factor is a term which affects the results.
(2) The selection of experimental factors: the main factors considered were as follows: influential factors of Shrinkage Cavity and Porosity, influential factors of technological yield .The experimental factors selected as riser style(A), riser section(B), riser height(C), chill section(D), chill thickness(E).
According to the principle of Orthogonal Array, orthogonal table is selected by the number of factors, the level of factors and experimental purposes.
Fig.5 Trends of factors’ influences on volume of riser Table4 shows the influence of different factors on each indicator from the most to the least and the optimum level according to the range of different factors.

A heat flow model needs to be considered for the factors mainly variable thermal properties, temperatures of phase transformation, the magnitude of heat and characteristics of heat distribution, plate geometry, convection and surface depression in the weld pool [7].
Many researchers consider constant thermo mechanical properties to find out temperature distribution on welded plates.
The mechanical properties of the joints and value of ferrite share test have been done.
Analysis of welding heat input influence on mechanical properties of test joints has been done using heat input from 2.5 to 4.0 kJ/mm.
Experimental Methods The experiments were conducted as per the design matrix randomly to avoid errors due to noise factors.

Microstructures and mechanical properties of the weld and the protective coatings were tested.
The two factors are benefit to the precipitation of austenite phase.
Mechanical Properties of Weld Joints.
Mechanical Properties of HVOF Coatings.
The mechanical properties of the weld joints were in accordance with related standard.

The mechanical properties of PEEK material are shown in Table 1.
Table 1 Mechanical properties of PEEK (#VICTREX©450G).
He found that the balance between these two factors governed the failure patterns under contact loadings [6].
However, the key factors are still unclear.
This feature is not affected by rotation speeds.

Significant fluctuation of chemical composition of steel within the required standards leads to a difference in physical-mechanical properties, which has an adverse effect on the reliability of the formation of the desired operating characteristics of machine parts' surfaces during processing [3, 4].
The situation is escalated by the complex nature of the cutting process and the impact of a number of disturbing factors, starting with blanking operations.
Therefore, the operational accounting of the properties of the processed material and the surface layer by tracking the cutting process itself can be a promising direction.
So, according to the classical concepts, the nature of the chip formation process is determined by the temperature-strength tension, which in turn depends on the physical-mechanical properties of the processed material, the facial layer of the machine part and the cutting tool.
Conclusion Thus, the regularities of the cutting process depend to a large extent on the properties of the material being processed and the facial layer.