Search results

In this work a preliminary data set including experimental results from fatigue tests on smooth and foreign object damaged (FOD) aluminium samples coated with WC/C deposited with PVD (physical vapour deposition) technique was considered before testing WC/C-coated spur gears for racing motorcycles under rolling contact fatigue (RCF).
The aluminium samples subjected to FOD after deposition showed a reduction in the fatigue limit that was probably due to the coating fractures produced by FOD acting like severe micro-notches.
Acknowledgments The Authors wish to thank DUCATI CORSE Srl for the drawings and the data on the spur gears.

High speed autorotation is simulated using an aerodynamic data set that is analyzed by the two-dimensional compressible Navier-Stokes Solver.
The experimental data published are rather out of date with respect to test velocity or advance ratio [5].
Hence, a rotor airfoil (NACA 0012) is analyzed by two dimensional compressible Navier-Stokes code, and the data set is used in simulation.
After that, a case study is performed using the aerodynamic data, in which airspeed is increased to observe the autorotation region for the variables.
The transient Simulation Method for autorotation works fairly well if it is used with sophisticated two-dimensional aerodynamic data.

In this paper, a case study using data observed in the Chuan06 well was presented to analysis, so as to study the influence of the tidal drainage effect on well tide and explore the relation between the tidal hydraulic response and its influencing factors.
The data was been collection for the abnormal research which was concerned with the earthquakes.
The data of water level was splited into 30 days time spans and calculated one by one.
The scatter plot was obtained by using practical data, and the theoretical relation curves under different storativity were obtained by the Hsieh model.
Acknowledgments The work is supported by the Youth Science Fund for Disaster Prevention and Reduction (201001) , the Public Utility Science Foundation of China (200808055) and the Fundamental Research Funds for the Central Universities of China (ZY20110103).

The data was imported into Matlab and the diagram of the relationship between V and r are made as follows.
Conversely, when filling coefficient is bigger, the corresponding r go smaller, material slip plane is very steep, and the movement along the circumference direction is much more remarkable than that along the transport direction, which will lead to transportation speed reduction and additional energy consumption.
Applying the data in all the equations, we can obtain the screw pitch, rotational speed, making .
Applying the data in Eq. 1, , that means the parameters are reasonable.
We should do experiments as many as possible to obtain more design reference data, and then adjust the parameters according to the actual situation

When the computer actual implements a program, the determination whether dividend is enough for reduction process should be counted as a subtraction process, the time of all steps (one step = one comparison + one subtraction) equals the difference number of the binary bits of the two operands plus 1; Of course, if the binary bits number of the dividend is not more than the divisor’s, only one subtraction step could complete the division and get the quotient and remainder.
When the dividend is shifted a bit, the high word data subtract the divisor once.
The “BL DIV” instruction calls a 32-bit unsigned integer division instruction subroutine and gets an integer as the high-word data of the quotient, then removing this result from register R2 and saving it in register R3 as high word data of the quotient of 64-bit division.
The program codes in appendix are tested on large amounts of data, and it can be used as an assembly language subroutine.

STS guarantees high strength and excellent corrosion and abrasion resistance, while Al contributes high thermal and electrical conductivity and gives rise to weight reduction [6].
The experimental UTS of the Al/STS clad are close to the calculated UTS from the data of separated Al and STS sheet.
In contrast, the experimental strain of the Al/STS clad shows the higher value than calculated strain from the data of separated Al and STS sheet using the rule of mixture.
[3] The experimentally observed UTS of the Al/STS clad are close to the calculated UTS using rule of mixture from the data of separated Al and STS sheet
[4] The experimental total strain of the Al/STS clad shows the higher value than the calculated total strain from the data of separated Al and STS sheet

In connection with this, the given problem is solved optimally, taking into account the available data and the experience gained.
The process parameters, physicochemical properties and composition of the reservoir oil from the oil preprocessing installation of Eastern Siberia oil field are used as the initial data.
The first stream is supplied to the three-phase separator TPS, where due to further reduction of pressure the remaining gas is released and formation water is separated.
An optimal installation’s operation mode (option five) was determined on the basis of the data obtained in which water separation is most effective.
Comparison of devices, with the given technological conditions Apparatus Consumption = 600142.86 [kg/hour] Input watercut (W) = 20.93 [%] G = 500119.05 [Kg/h] 1 2 3 4 5 6 7 Input S-1 T = 2 [°C] T = 2 [°C] T = 2 [°C] T = 2 [°C] T = 2 [°C] T = 2 [°C] T = 2 [°C] TPS T = 15 [°C] T = 15 [°C] T = 15 [°C] T = 25 [°C] T = 25 [°C] T = 25 [°C] T = 15 [°C] EDH T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] HT (I) T = 39 [°C] T = 45 [°C] T = 39 [°C] T = 39 [°C] T = 45 [°C] T = 45 [°C] T = 45 [°C] HT (II) T = 45 [°C] T = 45 [°C] T = 45 [°C] T = 45 [°C] T = 45 [°C] T = 45 [°C] T = 45 [°C] VST T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] T = 30 [°C] Conclusions The installation’s operation mode was recommended based on the obtained data, in which the residual water is the lowest.

In the same time, there is needed an urgent reduction of the gaseous and powder emissions in the environment, a phenomenon which is aggravated by the industrial development in the late decades.
Using the XRD data, one can see that the intensity of the diffraction lines for cristobalite, which begins to form at 1050 o C, is increasing until the temperature reaches 1300 o C, and after that, is decreasing.
As a result, the data showed in figure 2 emphasizes that the proportion of added glucose is significantly influencing the open porosity, for all the sintering temperatures: a proportion of 50% glucose, leads to an increase of the open porosity from 24.9% to 59.1%, in the case of the thermal treatment of 2 hours at 1100 o C.
Figure 2: influence of the glucose content on the open porosity Figure 3: influence of the glucose content on the average pore diameter The data presented in figure 3 allow us to evaluate the influence of the glucose content on the pore dimension: as the quantity of glucose is increasing, the pore dimension is increasing, due to a similar evolution of the porosity.
The microstructure analysis data emphasized the great influence of the glucose proportion on the porosity of the ceramic materials.

Although the angular variation of the two peaks near 10 GHz is suggestive of SAW behavior, linear fits to the shift data did not extrapolate through sinし = 0 for either of these two features.
Clearly, such behavior does not provide a good representation of our data.
The input data for the calculation are the porosity, the elastic constants of crystalline 6HSiC, and the shape factor つ = a/a3, where a1 = a2 = a and a3 are the semimajor axes of the ellipsoidal inclusions, which are ellipsoids of revolution coaxial with the crystal c-axis.
Oblate spheroids lead to a substantial reduction of the SAW speed.
Robert Boyd in the collection and analysis of data, and also the financial support provided by the Natural Sciences and Engineering Council of Canada.

Tensile Strength of PMMA/n-ZrSiO4 Composites Using Dynamic Mechanical Analyzer (DMA) Rama Dona1,a, Novita Dwi Purnamasari1,b, Wiwit Wulandari1,c, Allif Rosyidy Hilmi1,d, Nur Aini Fauziyah1,e and Suminar Pratapa1,f * 1Department of Physics, Faculty of Science and Data Analytics, Institut Teknologi Sepuluh Nopember (ITS), Kampus ITS, Sukolilo, Surabaya 60111, Indonesia aramadonad28.d28@gmail.com, bnovitas21196@gmail.com, cwiwitwulandarii21@gmail.com, dallif.hilmi@gmail.com, eaini.zierra@gmail.com, f*suminar_pratapa@physics.its.ac.id Keywords: PMMA, nano-zircon, stress and strain, dynamic mechanical analyzer (DMA).
The strength-strain dependence of the composites was carried out by measuring and analyze their Dynamic Mechanical Analyzer (DMA) data.
The broadening is presumably caused by two effects, i.e., reduction in crystallite size and increase in phase non-uniform strain.
Table 1 presents the crystallite size and strain data of zircon powders with variations in milling time after XRD data analyses using MAUD [7].