Search results

The type of substrates will be indicated as the prefix and the number for spray passes will be indicated as a suffix.
It decreased marginally when the number of spray passes was increased from 50 to 80 passes.
coating still remained as high as 70° even increasing the number spray passes.
It has a dense coating of round grains.
SEM observation reveals rod-like, round grains and smooth surface for An, AmH and Am coating.

The value does not only depend on effective porosity, but also controlled by grain’s size, shape, sorting, and consolidation degree [1].
These samples covers varies lithology, including sandstones with grain size from 10mm to less than 0.1mm, and volcanic rocks of tuff, andesite, granophyre, basalt, trachyte, and rhyolite.
The following formula is used to calculate the total entropy of attribute A: , (3) where N is the total number of samples, Nij is the number of samples in group j which also belongs to class i.
The number of layers and the number of neurons in each layer depend on the complexity of the problem and designer's experience.
The number of hidden layers selected by the GA is 5, and the average neurons in each layer is approximate 30.

Cell numbers were determined via a standard curve.
In order to confirm that cytotoxicity was not the reason for the reduced number of cells observed on the coatings, a test of the total number of dead cells in each well was determined.
The control coverslips also showed a number of dead cells over time, however to demonstrate the coating effect on cell death, the cell numbers have been compared to that of the control (Fig. 5).
Dead cell number compared to the control at time intervals 3 hours, 1, 3, 5, and 7 days Std dev.
Figure 6. cell number after 7 days, Figure 7.

The typical grain size distributions of soils are shown in Fig. 1.
Fig. 4 shows the distributions of the blow numbers along the depth.
It is found that the blow numbers are all over 6, which indicates a high strength for the natural mixed soils.
In addition, the tip resistances in the cone penetration tests change from site to site at the same depth due to the differences in grain size distributions.
Depth / m Site 1 Site 2 Site 3 Tip Resistance / MPa Blow Numbers /N Depth / m Site 1 Site 2 Site 2 Fig.4.

Table1 The dimension and numbers of samples Processing project Planning Sanding Shaping Drilling Mortising Crosscutting Dimension：Height×width×length [mm] 19×102×910 10×102×305 19×76×305 19×102 Numbers of samples [piece] 30 30 60 Testing and Evaluation Method.
At the same time, weighted-average number was determined by process's impact on product quality, weighted-average number of planning, sanding, crosscutting and shaping was 2 and weighted-average number of mortising and drilling was 1.The test marks of per process was that the percentage of each level multiplied by the corresponding points, by which, the various machining properties were graded: excellent (4-5); good (3-4); fair (2-3); poor (1-2); very poor (0-1).
The comprehensive marks were the sum of the test marks of per process multiplied by the corresponding weighted-average number, full marks 50 points.
According to the criteria ASTM D1666-87, a hollow chisel was used to process the connected square mortise and it was as far as possible to make two edges of mortise perpendicular to the wood grain and other two edges parallel to the wood grain in processing.

This is due to the fact that the increment of carbon, chromium, molybdenum, vanadium atomic number in transition zone results in the increment of troostite and carbon contents.
A large number of stable carbides precipitates.
Layer and base metal also forms a number of special stable complexs.
Furthermore RE elements can purify the grain boundary and reduce interface energy.
By the use of original treatment process, the 5Cr2NiMoVSi steel die can only deal with the work-piece in a number of 5000 or so; after the use of RE nickel boride → pre-cool temperature quenching and tempering complex strength process, mold service life span has reached about 40,000 in terms of the number of the work-piece.

Structure and component analysis shows that it contains TiB2 strips and grains with good heat resistance, which can intensify the strength of coating base and reduce the plastic deformation generated in part of the electrode surface by blasting right after the electrification.
Table 1 The spot welding parameters (spot welding pressure invariant F=4000N) Number Electric current, [A] Power on time,[ms] Phenomenon one 2k 10 No phenomenon two 2k 20 Small amount of black smoke run out three 2k 30 A very few sparks fly out four 2k 100 A very few sparks fly out five 3k 100 Black smoke run out six 4k 100 Ibid seven 6k 100 Ibid The test reduced welding time in order to ensure no sparks flying out at the beginning, meanwhile, welding current is slowly increased, so that the powder mixture to be smaller thermal shock.
As welding current increases and the growth of the power-on time, spot welding heat will be stronger, the number of particles begin to reduce, and the distribution in the matrix becomes uneven.

Based on the strong inhibition of SiC particles on the grain growth of the Αl2O3 matrix, a mixture powder of α-Al2O3 and SiC was used as feedstock to deposit the nanocomposite coatings by plasma spraying.
Since it uses powder as feedstock, the number of coating materials that can be sprayed by plasma spray process is almost unlimited.
The thickness of the coatings indirectly indicates the powder-used efficiency of the settings since the plasma gun passed over the samples an equal number of times for all runs.

The effects of stripe numbers on the energy absorption performance is investigated.
It is also found that the stripe numbers highly depend on the structural sizes, unsuitable stripes number may reduce the buckling stability and periodicity.
Stripe numbers are divided into two categories: even numbers and odd numbers, the ultimate buckling modes are displayed in Fig. 3 and Fig. 4.
Among the 12 models, it can be found that as the stripe number grows, fold number also increases correspondingly.
Lu, Modeling grain size dependent optimal twin spacing for achieving ultimate high strength and related high ductility in nanotwinned metals, Acta Mater. 59 (2011) 5544-5557

Using this strategy, it is possible to determine the probability of class membership , even when the number of factors k, or the number of training samples n.
The optimum number of principal components for SIMCA residual variance methods was selected by repeated use of the programs with different numbers of principal components, which gives the fewest classification errors for the validation set for the system validation.
For each sample, respectively, 30±0.5g of plastic grains was filled into the cup in the standard procedure.
The experiments have been done when differnent number of pricipal components is determined.
In this case, SIMCA is performed with a reduced number of principal components of about 12.