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Online since: February 2012
Authors: Eneko Sáenz de Argandoña, Ibai Ulacia, Gurutze Arruebarrena, Lander Galdos
The bigger the reduction of the vehicle weight is, which can be obtain using these alloys, the bigger the energy saving will be in the near future.
Before any test, the control signal has been tuned to obtain the desirable temperature in the forming zone. wich The temperature differences among the measured data have been always lower than 5-10 ºC /measurements have been realized using a contact thermocouple in five points of the forming area).
Before any test, the control signal has been tuned to obtain the desirable temperature in the forming zone. wich The temperature differences among the measured data have been always lower than 5-10 ºC /measurements have been realized using a contact thermocouple in five points of the forming area).
Online since: January 2014
Authors: Yu Ping Zhao, Yu Hai Xu
Only seize the opportunity of market demand, the development and application of linear motor and drive control technology on the market widely promotion, is bound to be in the driver with high efficiency, energy conservation and emissions reduction, promote industrial safety production from low-end to high-end equipment the development process of rapid ascension.
1.
The toy industry is also extensive use of the linear motor. [1] 2.LINEAR MOTOR OF THE CURRENT SITUATION AND TREND OF DEVELOPMENT OF THE RELATED TECHNOLOGY AT HOME AND ABROAD 2.1 The domestic status quo According to the data shows, the application of linear motor in the domestic machine tool is at the stage of development of a prototype.
The toy industry is also extensive use of the linear motor. [1] 2.LINEAR MOTOR OF THE CURRENT SITUATION AND TREND OF DEVELOPMENT OF THE RELATED TECHNOLOGY AT HOME AND ABROAD 2.1 The domestic status quo According to the data shows, the application of linear motor in the domestic machine tool is at the stage of development of a prototype.
Online since: November 2011
Authors: Zhao Mei Xue
Compared with the conventional filter, bag filter owns the characteristics of high efficiency, energy saving, reduction of air pollution, low cost, convenient operation and easy maintenance, etc.
It is used for processing and computing the sensor signal with owning the functions like local display of data and parameter setting.
The upper display unit (upper operating station): can store, display, record, print the required data, and be able to operate upper-lower limit alarm and system equipment failures alarm.
Also, it can set parameters downward and data communicating with DCS systems upward.
In the whole operation process, the system is stable and reliable and the obtained data is of high accuracy.
It is used for processing and computing the sensor signal with owning the functions like local display of data and parameter setting.
The upper display unit (upper operating station): can store, display, record, print the required data, and be able to operate upper-lower limit alarm and system equipment failures alarm.
Also, it can set parameters downward and data communicating with DCS systems upward.
In the whole operation process, the system is stable and reliable and the obtained data is of high accuracy.
Research on Performance of Cement Stabilized Skeleton-Dense Structure Aggregate Base Course Material
Online since: February 2011
Authors: Li Qun Hu, Ai Min Sha
The strain gauges were connected by wires to the collecting instrument of strain data that connected to the computer.
After that, the specimens were put into the automatic environmental cabinet whose temperature was set to drop from 45 to -15 at a reduction velocity of 1/5min.
The erosion resistance performances of different test specimens were compared based on the quantities of their sediments. 6 specimens were measured for each data point [6].
The test data also indicated that the thermal shrinkage coefficient of cement stabilized aggregate A is more sensitive than cement stabilized aggregate B with variation of cement content.
The data shows that the erosion quantity of cement stabilized aggregate A and aggregate B in 30 min all decreases along with the increase of cement content.
After that, the specimens were put into the automatic environmental cabinet whose temperature was set to drop from 45 to -15 at a reduction velocity of 1/5min.
The erosion resistance performances of different test specimens were compared based on the quantities of their sediments. 6 specimens were measured for each data point [6].
The test data also indicated that the thermal shrinkage coefficient of cement stabilized aggregate A is more sensitive than cement stabilized aggregate B with variation of cement content.
The data shows that the erosion quantity of cement stabilized aggregate A and aggregate B in 30 min all decreases along with the increase of cement content.
Online since: May 2012
Authors: Xiao Jian Chen, Yong Pan
One is the radiation distribution, the other is block distribution with reduction industry amounts.
Tab. 1 The evaluation index system Level 1 index Level 2 index Level 3 index Explain Suitability factor Resources suitability X1 Per capita available land resources /hm2 (Suitable for construction sites - rivers and lakes area - basic farmland area -construction land area) / resident population X2 Per capita water resources available/m3 (Use of water resources can be developed - has developed the use of water resources) / resident population Environment suitability X3 Atmospheric environmental capacity From 《Shaanxi main functional area planning》 data X4 Water environmental capacity Ecological suitability X5 Ecological sensitivity X6 Ecological importance Dominance factor Location advantage degree X7 Geopolitical dominance Considering the transport hub and the distance of the Xianyang International Airport X8 Traffic access sexual Measure area network density Economic advantage degree X9 The total economy / million Obtained directly through Statistical Yearbook X10 Economic
Through the collection of each index data (basic data and economic index from the city and county statistics yearbook, environmental and ecological index data from Shaanxi main function region), use the statistical software to analyzed.
Tab. 1 The evaluation index system Level 1 index Level 2 index Level 3 index Explain Suitability factor Resources suitability X1 Per capita available land resources /hm2 (Suitable for construction sites - rivers and lakes area - basic farmland area -construction land area) / resident population X2 Per capita water resources available/m3 (Use of water resources can be developed - has developed the use of water resources) / resident population Environment suitability X3 Atmospheric environmental capacity From 《Shaanxi main functional area planning》 data X4 Water environmental capacity Ecological suitability X5 Ecological sensitivity X6 Ecological importance Dominance factor Location advantage degree X7 Geopolitical dominance Considering the transport hub and the distance of the Xianyang International Airport X8 Traffic access sexual Measure area network density Economic advantage degree X9 The total economy / million Obtained directly through Statistical Yearbook X10 Economic
Through the collection of each index data (basic data and economic index from the city and county statistics yearbook, environmental and ecological index data from Shaanxi main function region), use the statistical software to analyzed.
Online since: August 2013
Authors: Hua Xue, Wen Jun Wu
The training data was obtained in an earlier version of the drive, which contained a conventional speed sensor. 90000 samples were taken for each of the input and output signals, but during the training phase only 30% of the data was used and the other data were left for the checking phase.
The training was performed with data for the unloaded motor, but the trained ANN speed estimator was then implemented in the drive containing an unknown loaded machine.
“Reduction of power fluctuations of a large-scale grid-connected offshore wind farm using a variable frequency transformer,” IEEE Transactions on Sustainable Energy, vol. 2, March 2011, pp. 226-234.
The training was performed with data for the unloaded motor, but the trained ANN speed estimator was then implemented in the drive containing an unknown loaded machine.
“Reduction of power fluctuations of a large-scale grid-connected offshore wind farm using a variable frequency transformer,” IEEE Transactions on Sustainable Energy, vol. 2, March 2011, pp. 226-234.
Online since: April 2014
Authors: E.K. Ioakeimidis, V.N. Kytopoulos
The study of stress effects on polycrystalline ferromagnetic materials needs a basic reduction to a clearly formulated set of problems solvable by detailed experimental investigations and/or mathematical analysis.
The specimens were continuously loaded and data were taken at convenient time intervals (on-line loading).
Further one can put, in a linear form, the formulae 1 and 2 as follows: (3) (4) Fig. 2: Elastic stress (strain) induced evolution of micromagnetic activity (counts) for six predetermined threshold voltage values, , ) Fig. 3: Natural logarithmic mode of stress (strain)-induced evolution of micromagnetic activity (emitted counts) for six predetermined threshold voltage values, , Fig. 4: Counts number distribution in function of squared threshold voltage () for given elastic strains (stress) Fig.5: Logarithmic mode of counts number distribution in function of squared threshold voltage () for given elastic strains (stress) Fig. 6: Linear best fit of the data given in Fig 5 Further, for the sake of completeness in figure 6 the generalized, single range linear best fit for the two logarithmic
From the fitting data given in Fig 6, a (very) good linear fit with a correlation coefficient of can be deduced.
Thereafter, by taking into consideration of the data given in fig. 6 concerning the single range best fitted linear equation one obtains: from which it can be deduced that (5) This means that the characteristic dispersing wall energy is equal to the inverse of the slope of the best fitted linear equation.
The specimens were continuously loaded and data were taken at convenient time intervals (on-line loading).
Further one can put, in a linear form, the formulae 1 and 2 as follows: (3) (4) Fig. 2: Elastic stress (strain) induced evolution of micromagnetic activity (counts) for six predetermined threshold voltage values, , ) Fig. 3: Natural logarithmic mode of stress (strain)-induced evolution of micromagnetic activity (emitted counts) for six predetermined threshold voltage values, , Fig. 4: Counts number distribution in function of squared threshold voltage () for given elastic strains (stress) Fig.5: Logarithmic mode of counts number distribution in function of squared threshold voltage () for given elastic strains (stress) Fig. 6: Linear best fit of the data given in Fig 5 Further, for the sake of completeness in figure 6 the generalized, single range linear best fit for the two logarithmic
From the fitting data given in Fig 6, a (very) good linear fit with a correlation coefficient of can be deduced.
Thereafter, by taking into consideration of the data given in fig. 6 concerning the single range best fitted linear equation one obtains: from which it can be deduced that (5) This means that the characteristic dispersing wall energy is equal to the inverse of the slope of the best fitted linear equation.
Online since: November 2014
Authors: Jian Qun Zhang, Hua Liu, Er Yang Ming, Chao Hui Zhang, Jie Xu
The temperature effects on the preparation and the coating tribological properties are investigated, and furthermore, the friction reduction is analyzed and discussed.
Table 1 Orthogonal test data and range analysis of friction coefficient(COF) Factors Test no.
Analysis and computation results for data of preheating temperature are listed in Table.1, wherein the values listed are averaged from triple tests.
The symbols I, II, and III represent the sum of the data of ‘1’, ‘2’, and ‘3’ in each line.
Table 2 Analysis of variance table index Variance source Sum of square S Freedom/f Mean square S' F value Significance COF A 0.0052848 2 0.0026424 3.987 B 0.0027129 2 0.0013565 2.047 e 0.0026507 4 0.0006627 Clearly, according to the data of Table 1, the contributions of A and B are not prominent.
Table 1 Orthogonal test data and range analysis of friction coefficient(COF) Factors Test no.
Analysis and computation results for data of preheating temperature are listed in Table.1, wherein the values listed are averaged from triple tests.
The symbols I, II, and III represent the sum of the data of ‘1’, ‘2’, and ‘3’ in each line.
Table 2 Analysis of variance table index Variance source Sum of square S Freedom/f Mean square S' F value Significance COF A 0.0052848 2 0.0026424 3.987 B 0.0027129 2 0.0013565 2.047 e 0.0026507 4 0.0006627 Clearly, according to the data of Table 1, the contributions of A and B are not prominent.
Online since: October 2012
Authors: A.K.M. Nurul Amin, M.D. Arif, M.A. Mahmud
The data acquisition system included vibration sensors (accelerometer), thermocouples, and signal conditioning unit.
KISTLER Accelerometer (Type 8774A50) was used for vibration data acquisition.
Run Factor 1 Factor 2 Factor 3 Response A: Spindle Speed (rpm) B: Depth of Cut (um) C: Feed rate (mm/min) Surface Roughness Ra (nm) 1 50000 20 18 116.43 2 40000 20 12 132.14 3 30000 10 6 186.58 4 50000 15 12 118.54 5 30000 20 6 139.32 6 30000 10 18 210 7 40000 10 12 189.17 8 50000 20 6 114.1 9 40000 15 12 137.37 10 40000 15 12 140 11 30000 15 12 149.25 12 40000 15 12 138.55 13 30000 20 18 167.54 14 50000 10 6 162.42 15 40000 15 6 150.23 16 40000 15 18 176.61 17 40000 15 12 150.25 18 50000 10 18 167.08 Table 1: Experimental sequence with independent and response variables Results and Discussions Fig. 2 displays the SEM image and surface roughness data.
(b) (a) Fig.2: Image of machined surface (a) SEM Image (b) Surface data.
It established that air blowing was another source for the reduction of surface roughness.
KISTLER Accelerometer (Type 8774A50) was used for vibration data acquisition.
Run Factor 1 Factor 2 Factor 3 Response A: Spindle Speed (rpm) B: Depth of Cut (um) C: Feed rate (mm/min) Surface Roughness Ra (nm) 1 50000 20 18 116.43 2 40000 20 12 132.14 3 30000 10 6 186.58 4 50000 15 12 118.54 5 30000 20 6 139.32 6 30000 10 18 210 7 40000 10 12 189.17 8 50000 20 6 114.1 9 40000 15 12 137.37 10 40000 15 12 140 11 30000 15 12 149.25 12 40000 15 12 138.55 13 30000 20 18 167.54 14 50000 10 6 162.42 15 40000 15 6 150.23 16 40000 15 18 176.61 17 40000 15 12 150.25 18 50000 10 18 167.08 Table 1: Experimental sequence with independent and response variables Results and Discussions Fig. 2 displays the SEM image and surface roughness data.
(b) (a) Fig.2: Image of machined surface (a) SEM Image (b) Surface data.
It established that air blowing was another source for the reduction of surface roughness.
Online since: August 2015
Authors: S. Rajkumar, G. Sudarshan
Experimental Setup and Method
The experimental data are obtained on a FORD DV3 turbo charged Duratorq CRDI engine which is instrumented for the necessary measurements.
Data Processing The acquired cylinder pressure histories form the basis of determining the required characteristics namely ignition delay, combustion duration and burn rates.
The polytropic indices needed in computation are arrived from the logarithmic plots of cylinder pressure data.
This procedure is repeated for pilot and main combustion pulses of each test data. 5.
Miao, Reduction of heavy duty diesel engine emission and fuel economy with multi-objective genetic algorithm and phenomenological model.
Data Processing The acquired cylinder pressure histories form the basis of determining the required characteristics namely ignition delay, combustion duration and burn rates.
The polytropic indices needed in computation are arrived from the logarithmic plots of cylinder pressure data.
This procedure is repeated for pilot and main combustion pulses of each test data. 5.
Miao, Reduction of heavy duty diesel engine emission and fuel economy with multi-objective genetic algorithm and phenomenological model.