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Online since: October 2016
Authors: Maya Radune, Michael Zinigrad, David Fuks, Nachum Frage, S. Hayun
Data collection was performed by step scanning over the angular range in steps, with 3 sec per step.
With this input data the accuracy of the self-consistent total energy calculations was ~10-4 Ry.
For non-cubic structures (TiAl, TiN and AlN in wurtzite structure) the volume optimization was performed with the fixed c/a ratio taken from experimental data.
Compounds a, [Å] b, [Å] c, [Å] Energy, [Ry] TiN (NaCl) 4.2639 4.2639 4.2639 -1817.3924 TiAl 3.1541 3.1540 3.2173 -2193.3037 Ti7Al N8 8.4980 8.4980 8.4980 -13317.0129/ -1664.6266 The data listed in Table 1 are in agreement with the experimental data [32].
This result is in agreement with the XRD data for milled powders of various compositions.
With this input data the accuracy of the self-consistent total energy calculations was ~10-4 Ry.
For non-cubic structures (TiAl, TiN and AlN in wurtzite structure) the volume optimization was performed with the fixed c/a ratio taken from experimental data.
Compounds a, [Å] b, [Å] c, [Å] Energy, [Ry] TiN (NaCl) 4.2639 4.2639 4.2639 -1817.3924 TiAl 3.1541 3.1540 3.2173 -2193.3037 Ti7Al N8 8.4980 8.4980 8.4980 -13317.0129/ -1664.6266 The data listed in Table 1 are in agreement with the experimental data [32].
This result is in agreement with the XRD data for milled powders of various compositions.
Online since: November 2012
Authors: Xiu Chuan Zhu
Based on EFA software for hydrokinetics, the inner flow field of all combined diffusers were simulated and the related data were analyzed.
But the trial is real physical testing, data sampling location is six, which can not fully reflect performance of the diffuser of ventilator.
FEA is automatically calculated by the COSMOS/FLOWORKS software, and get large quantity of data.
Inputting the data to software of Microsoft Excel and data processing.
Energy saving and noise reduction of mine ventilator[M] .coal industry press. 1998(4) in Chinese [2] kai Li..
But the trial is real physical testing, data sampling location is six, which can not fully reflect performance of the diffuser of ventilator.
FEA is automatically calculated by the COSMOS/FLOWORKS software, and get large quantity of data.
Inputting the data to software of Microsoft Excel and data processing.
Energy saving and noise reduction of mine ventilator[M] .coal industry press. 1998(4) in Chinese [2] kai Li..
Online since: March 2010
Authors: Nan Xu, Xiu Hua Ren, Wei Qiang Wang
The strain-based fatigue tests of 42CrMo alloy steel were conducted by controlling six sets
of total strain range, and stress range data was obtained under each strain range.
The research on data and performance parameter of stress-strain fatigue life can provide reliable and precious information for material choice, mechanical design and fatigue life analysis[5].
After heat treatment, the material obtained from standardized tensile specimens has the following mechanical properties: ultimate tensile strength, yield strength, elongation, and reduction of area is 1100MPa, 940MPa, 14%, and 50% respectively.
In order to guarantee the reliability of test data, the specimens were carefully prepared in machining process.
According to data of cyclic stress range in strain-based fatigue tests, cyclic stress range values were separately obtained under 2/ t ε∆ of strain range by Normal Distribution(ND), Lognormal Distribution(LND), Exponential Distribution(ED), Two-parameter Weibull Distribution(2-PWD), and Three-parameter Weibull Distribution(3-PWD).
The research on data and performance parameter of stress-strain fatigue life can provide reliable and precious information for material choice, mechanical design and fatigue life analysis[5].
After heat treatment, the material obtained from standardized tensile specimens has the following mechanical properties: ultimate tensile strength, yield strength, elongation, and reduction of area is 1100MPa, 940MPa, 14%, and 50% respectively.
In order to guarantee the reliability of test data, the specimens were carefully prepared in machining process.
According to data of cyclic stress range in strain-based fatigue tests, cyclic stress range values were separately obtained under 2/ t ε∆ of strain range by Normal Distribution(ND), Lognormal Distribution(LND), Exponential Distribution(ED), Two-parameter Weibull Distribution(2-PWD), and Three-parameter Weibull Distribution(3-PWD).
Online since: September 2007
Authors: Jian Yu Zhang, Bin Jun Fei, Rui Bao
The comparisons with
experimental data indicate the validity of the proposed method.
Introduction It has been realized that corrosion has a great reduction on fatigue performance of metallic structures.
However, a considerable amount of scatter has been observed in FCG data, and the dispersivity has been changed in the presence of corrosive medium.
Distribution Characteristics of Random Variable X Prediction value of the random variable X in Equ.3 can be obtained by ( )( )dd , iia N K∆ data via the following equation transformed from Equ.3.
Fig.6 illustrated the Pa N− − curves corresponding to 05.0=P , 5.0=P and 95.0=P in the 4 kinds of environments and all experiment data.
Introduction It has been realized that corrosion has a great reduction on fatigue performance of metallic structures.
However, a considerable amount of scatter has been observed in FCG data, and the dispersivity has been changed in the presence of corrosive medium.
Distribution Characteristics of Random Variable X Prediction value of the random variable X in Equ.3 can be obtained by ( )( )dd , iia N K∆ data via the following equation transformed from Equ.3.
Fig.6 illustrated the Pa N− − curves corresponding to 05.0=P , 5.0=P and 95.0=P in the 4 kinds of environments and all experiment data.
Online since: January 2016
Authors: Rosyida Permatasari, Tholudin Mat Lazim, Supriyadi Supriyadi, Tono Sukarnoto
The comparison between the results of the developed CFD models and the experimental data showed very close agreement.
Introduction Fluidization is a technique or a substantial reduction in the phenomenon of internal friction in the bed of solid particles with a counter force that the bed can flow like a fluid.
Because, the general application of the gas/particle flow systems and fluidization in the industry are for an increase in efficiency and the improvement of fundamentally based on realistic simulations, accurate and detailed experimental data and design tools for such systems.
All the models showed good agreement with the experimental data for axial liquid velocity and the fractional gas hold-up profiles.
However, for eddy diffusivity, only the 3D model predictions agree closely with the experimental data [6].
Introduction Fluidization is a technique or a substantial reduction in the phenomenon of internal friction in the bed of solid particles with a counter force that the bed can flow like a fluid.
Because, the general application of the gas/particle flow systems and fluidization in the industry are for an increase in efficiency and the improvement of fundamentally based on realistic simulations, accurate and detailed experimental data and design tools for such systems.
All the models showed good agreement with the experimental data for axial liquid velocity and the fractional gas hold-up profiles.
However, for eddy diffusivity, only the 3D model predictions agree closely with the experimental data [6].
Online since: February 2013
Authors: Wen Jing Ma, Hai Feng Hu
The current paper used the measured data of Jia Lequan and simulated the surface deformation after removed the impact of the mountainous terrain to compare the trend and mechanism of the surface movement and parameters in repeated mining.
In order to improve the under-mined safety, and keep the protection pillar better on the basis of reducing the loss of coal resources, this article analysed the measured data of the repeated mining about 2#, 3#, 8# and 9# coal in Jia Lequan.
The analysis of surface movement deformation parameter Through analysis the observation data of 2#, 3 #, 8 # and 9 # coal seam, we got the surface deformation parameters in coal repeated mining condition in Table.2.
According to the measured data, .
Conclusion Combined the mining subsidence observation data of the three coal-seams and removing the impact of the mountainous terrain slip of Jia Lequan, we can conclude in these areas: (1) In repeated mining the values of surface movement and deformation are increased, and the damage of coal-seam and surface are enhanced.
In order to improve the under-mined safety, and keep the protection pillar better on the basis of reducing the loss of coal resources, this article analysed the measured data of the repeated mining about 2#, 3#, 8# and 9# coal in Jia Lequan.
The analysis of surface movement deformation parameter Through analysis the observation data of 2#, 3 #, 8 # and 9 # coal seam, we got the surface deformation parameters in coal repeated mining condition in Table.2.
According to the measured data, .
Conclusion Combined the mining subsidence observation data of the three coal-seams and removing the impact of the mountainous terrain slip of Jia Lequan, we can conclude in these areas: (1) In repeated mining the values of surface movement and deformation are increased, and the damage of coal-seam and surface are enhanced.
Online since: January 2012
Authors: Zeng Yan, Xiao Yang Huang, Wei Dong Zhou, Sheng Kai Yu
Numerical Study on Heat Transfer and Lubricant Depletion in a Heat Assisted Magnetic Recording System with Multilayer Disk Structure
Yan Zeng1, a, Xiaoyang Huang1,b Weidong Zhou2,c and Shengkai Yu2,d
1School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
2 Data Storage Institute, Agency for Science, Technology and Research (A*STAR), DSI building, 5 Engineering Drive 1, Singapore 117608
azengyan@ntu.edu.sg, bMXHUANG@ntu.edu.sg, cZHOU_Weidong@dsi.a-star.edu.sg, dYU_Shengkai@dsi.a-star.edu.sg
Keywords: multilayer structure, heat transfer, lubricant depletion, HAMR system.
Compared with pure glass disk substrate, larger thermal conductivity of top-layer material in the multilayer disk substrate causes faster heat conduction and thus substantial reductions in the temperature increase and lubricant depletion on the top surface.
The data for FePtC-Ag is not included due to the negligible amount.
The lubricant depletion contours also show the apparent difference under different laser powers, consistent with the data shown in Fig. 4.
The temperature increase on the top surface of pure glass disk substrate is nearly 640ºC under a small laser power of 15mW (data not shown), which is much higher than that for the multilayer disk substrate.
Compared with pure glass disk substrate, larger thermal conductivity of top-layer material in the multilayer disk substrate causes faster heat conduction and thus substantial reductions in the temperature increase and lubricant depletion on the top surface.
The data for FePtC-Ag is not included due to the negligible amount.
The lubricant depletion contours also show the apparent difference under different laser powers, consistent with the data shown in Fig. 4.
The temperature increase on the top surface of pure glass disk substrate is nearly 640ºC under a small laser power of 15mW (data not shown), which is much higher than that for the multilayer disk substrate.
Online since: October 2010
Authors: John R. Nicholls, Richard G. Wellman, Remy Steenbakker, Jörg Feist
Data on the temperature sensing capability of various rare earth doped EB-PVD thermal barrier coatings will be reported.
Through such efficiency improvements, they offer reduced fuel usage and an associated reduction in CO2 emissions.
Published data elsewhere [27-29] would suggest a higher temperature capability for this phosphor, when using a more sensitive detector system. 4.2 Dysprosia doped YSZ phosphor The emission spectra of as deposited coatings co-doped with 0.3, 1 and 2 mol% of dysprosia are reproduced in Fig. 4.
For both phosphors the data were recorded during the same experiment using 355 nm excitation and switching between the YAG:Tm to the YSZ:Dy emission wavelength.
The YAG:Tm layer had a temperature capability of at least 1300°C and the luminescence of YSZ:Dy was not affected by the YAG top layer. 6.0 Acknowledgements The work and data presented in this paper were partly sponsored by the European Community under the project ASTERIXE and by The Carbon Trust under the project SATURN.
Through such efficiency improvements, they offer reduced fuel usage and an associated reduction in CO2 emissions.
Published data elsewhere [27-29] would suggest a higher temperature capability for this phosphor, when using a more sensitive detector system. 4.2 Dysprosia doped YSZ phosphor The emission spectra of as deposited coatings co-doped with 0.3, 1 and 2 mol% of dysprosia are reproduced in Fig. 4.
For both phosphors the data were recorded during the same experiment using 355 nm excitation and switching between the YAG:Tm to the YSZ:Dy emission wavelength.
The YAG:Tm layer had a temperature capability of at least 1300°C and the luminescence of YSZ:Dy was not affected by the YAG top layer. 6.0 Acknowledgements The work and data presented in this paper were partly sponsored by the European Community under the project ASTERIXE and by The Carbon Trust under the project SATURN.
Online since: April 2011
Authors: Norihiro Nishio, Yuki Deguchi, Takahiro Sugiyama, Yoichi Takebayashi
A cameraman in a compact studio has to operate many cameras because of staff reduction.
Firstly, the system moves the camera using 3D position data.
Controlling with 3D position data.
As shown in Figure 1, the subject and the cameras provide 3D position data.
Fig.1 3D position data.
Firstly, the system moves the camera using 3D position data.
Controlling with 3D position data.
As shown in Figure 1, the subject and the cameras provide 3D position data.
Fig.1 3D position data.
Online since: June 2013
Authors: Xiao Hua Yuan
The thermal data cannot be obtained in real time.
Fiber grating demodulator for fiber grating temperature sensor signal monitoring and data processing to obtain the measurement results, the transmission fiber for transmitting the optical signal, the fiber Bragg grating sensor for reflecting the narrowband light of the wavelength varies with temperature center.
The stability of the heating power of the contact after power, measured the temperature in the contact temperature reduction process, with a resolution of 1 ° C mercury thermometer for measuring the temperature standard temperature, while recording the measured temperature of the fiber grating sensor.
The data of the experimental results shown in Table 1.
Table 1 Experimental data℃ Standard temperature Measured temperature Systematic errors Standard temperature Measured temperature Systematic errors 62 61.4 -0.6 42 41.6 -0.4 60 59.6 -0.4 40 40.3 0.3 58 58.2 0.2 38 37.5 -0.5 56 57 1.0 36 35.2 -0.8 54 54.3 0.3 34 33.8 -0.2 52 53.2 1.2 32 32.5 0.5 50 50.4 0.4 30 29.7 -0.3 48 47.3 -0.7 28 27.2 -0.8 46 46.3 0.3 26 25.4 -0.6 44 44.2 0.2 24 22.9 -1.1 Conclusion Fiber grating sensors, while taking advantage of advanced digital fiber grating signal processor to resolve tune technology, and large-capacity signal acquisition and processing real-time online and self-test function monitoring computer user configuration screen.
Fiber grating demodulator for fiber grating temperature sensor signal monitoring and data processing to obtain the measurement results, the transmission fiber for transmitting the optical signal, the fiber Bragg grating sensor for reflecting the narrowband light of the wavelength varies with temperature center.
The stability of the heating power of the contact after power, measured the temperature in the contact temperature reduction process, with a resolution of 1 ° C mercury thermometer for measuring the temperature standard temperature, while recording the measured temperature of the fiber grating sensor.
The data of the experimental results shown in Table 1.
Table 1 Experimental data℃ Standard temperature Measured temperature Systematic errors Standard temperature Measured temperature Systematic errors 62 61.4 -0.6 42 41.6 -0.4 60 59.6 -0.4 40 40.3 0.3 58 58.2 0.2 38 37.5 -0.5 56 57 1.0 36 35.2 -0.8 54 54.3 0.3 34 33.8 -0.2 52 53.2 1.2 32 32.5 0.5 50 50.4 0.4 30 29.7 -0.3 48 47.3 -0.7 28 27.2 -0.8 46 46.3 0.3 26 25.4 -0.6 44 44.2 0.2 24 22.9 -1.1 Conclusion Fiber grating sensors, while taking advantage of advanced digital fiber grating signal processor to resolve tune technology, and large-capacity signal acquisition and processing real-time online and self-test function monitoring computer user configuration screen.