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Online since: July 2015
Authors: Didied Haryono, Mahfudz Al Huda, Warsito P. Taruno, Marlin R. Baidillah, Irwin Maulana, Desiani Desiani
Capacitance value is measured using 2-channel data acquisition system (DAS) and parallel plate capacitive sensor at frequency 2.5 MHz.
The samples were prepared by performing size reduction using Ball Mill.
Data were taken in the frequency range up to 40 points with a frequency range of 1 kHz – 5 MHz.
Capacitance and dielectric constant of coals Sample Capacitance (pF) Dielectric Constant Lignite 9,8645 3,8275 Subbituminous 7,4215 2,8962 Bituminous 6,5674 2,5051 Anthracite 7,0602 2,6948 Different dielectric constant values were obtained due to the different composition of the coal in accordance with the data in Table 1.
The samples were prepared by performing size reduction using Ball Mill.
Data were taken in the frequency range up to 40 points with a frequency range of 1 kHz – 5 MHz.
Capacitance and dielectric constant of coals Sample Capacitance (pF) Dielectric Constant Lignite 9,8645 3,8275 Subbituminous 7,4215 2,8962 Bituminous 6,5674 2,5051 Anthracite 7,0602 2,6948 Different dielectric constant values were obtained due to the different composition of the coal in accordance with the data in Table 1.
Online since: September 2011
Authors: Guang Bin Wang, Yi Lun Liu, Xian Qiong Zhao
This article takes “1+4” the aluminum belt hot tandem rolling line as the object of study, based on the scene deviation data, has researched the deviation regular of tandem rolling strap, has established the BP neural network forecast model of the rolling process.
From the actualdeviation data, the change of rolling parameters in F4 rolling system, often has a decisive impact on the final deviation of the strip.
Then we analyse to the actual rolling production deviation data in one aluminum company.
This aluminum had been rolled at 12:35:34 on June 25th, the average wedge of the product is 3.12mm,average wedge is 5μm, belt speed is 5.16m / s, rolling length is 764m.We can obtain the characteristic value of the steady-state deviation of these data
On basis of distribution rule of actual rolling data, tail deviation was divided into some kinds of patterns, obtained characteristic parameters and mapping matrix by BP neural network to predict tail deviation pattern.
From the actualdeviation data, the change of rolling parameters in F4 rolling system, often has a decisive impact on the final deviation of the strip.
Then we analyse to the actual rolling production deviation data in one aluminum company.
This aluminum had been rolled at 12:35:34 on June 25th, the average wedge of the product is 3.12mm,average wedge is 5μm, belt speed is 5.16m / s, rolling length is 764m.We can obtain the characteristic value of the steady-state deviation of these data
On basis of distribution rule of actual rolling data, tail deviation was divided into some kinds of patterns, obtained characteristic parameters and mapping matrix by BP neural network to predict tail deviation pattern.
Online since: October 2012
Authors: Liang Liang Chen, Liang Ma, Feng Liu
The finite difference method has been rarely used, the finite element method is the most widely used in the calculation of the seepage problem, compared with the finite element method the boundary element method is easy to deal with infinite or semi-infinite permeability media and the free surface, and only the study domain boundary is disassembled, the data amount of information a significant reduction in the boundary element method to dimensionality reduction, the three-dimensional problem can be reduced to two-dimensional problem, the two-dimensional problem is reduced to one-dimensional problem.
Online since: July 2011
Authors: Yan Fei Ma, Xue Dong Feng
A reduction in the sand moisture content caused a large reduction in the dieldrin vapor densities.
Volatilization data were measured per 12h,then the sample was placed in another new plastic drum in order to avoid volatile components saturating the plastic drum
Volatilization data were measured per 12h,then the sample was placed in another new plastic drum in order to avoid volatile components saturating the plastic drum
Online since: October 2010
Authors: Chong Hai Xu, Ming Dong Yi, Hui Fa Zhang, Xing Hai Wang
So phenomena often happen such as soldering, oxidation and even welding in the extrusion process, leading to the intensifying of wear and reduction of service life, because of the friction between the die and workpiece.
Therefore, the reduction in grain size of the Ti(C,N)-based cermet die material will certainly result in the enhancement of the flexural strength.
The data show a trend of increasing flexural strength with increasing nano-ZrO2, and a peak value of 967MPa is reached at a composition of 10wt% nano-ZrO2 which is about 65% higher than that of the cermet without nono-ZrO2 addition.
Therefore, the reduction in grain size of the Ti(C,N)-based cermet die material will certainly result in the enhancement of the flexural strength.
The data show a trend of increasing flexural strength with increasing nano-ZrO2, and a peak value of 967MPa is reached at a composition of 10wt% nano-ZrO2 which is about 65% higher than that of the cermet without nono-ZrO2 addition.
Online since: May 2011
Authors: Zhi Wu Yu, Li Song
The damage to RC structures resulting from the corrosion of the reinforcements is exhibited in the form of steel cross-section reduction, loss of bond between the concrete and steel, cracking, and spalling of the concrete cover [1,2,3,4].
No Solved the creep strain of concrete by Eq.2 Determined the maximum stress of the steel Solved the residual steel area by Eq.8 Solved the compressive elastic modulus by Eq.4 i=i+1 Yes Fatigue life of the beam Solved strain and stress of concrete and steel Yes No Loading scheme (e.g. fatigue loads) Material behavior (e.g. strength) Structural configuration Input data Failure of concrete or steel Fig.2 Flowchart of estimation Fatigue Life of Corroded RC Beam Application to RC corroded beams This section presents an example describing the corrosion effect of a simply supported RC beam subject to fatigue loading.
The reduction in fatigue life due to this decrease of cross-section area is linear to that due to the loss of cross-section area of the reinforcing bars due to corrosion, where at a 60.8% mass loss of cross-section area was close to a 55.8% fatigue life loss.
No Solved the creep strain of concrete by Eq.2 Determined the maximum stress of the steel Solved the residual steel area by Eq.8 Solved the compressive elastic modulus by Eq.4 i=i+1 Yes Fatigue life of the beam Solved strain and stress of concrete and steel Yes No Loading scheme (e.g. fatigue loads) Material behavior (e.g. strength) Structural configuration Input data Failure of concrete or steel Fig.2 Flowchart of estimation Fatigue Life of Corroded RC Beam Application to RC corroded beams This section presents an example describing the corrosion effect of a simply supported RC beam subject to fatigue loading.
The reduction in fatigue life due to this decrease of cross-section area is linear to that due to the loss of cross-section area of the reinforcing bars due to corrosion, where at a 60.8% mass loss of cross-section area was close to a 55.8% fatigue life loss.
Online since: December 2012
Authors: Zhanna V. Zatcepilova, Elliy A. Kachalov, Alexsander V. Esakov
Below you can see the main technical characteristics of the CRTM 350-8 mill:
- Maximum shell outer diameter with plus tolerance, not more
mm
360
- Shell thickness
mm
5-40
- Shell length
m
2.5-8
- Tolerance for shell outer diameter
%
±1.0
- Tolerance for shell wall thickness, not more
%
±12.5
- Shell camber
mm/m
2
- Finished tube outer diameter
mm
140-325
- Finished tube wall thickness
mm
3-32
- Finished tube maximum length
m
25
- Finished tube surface roughness Ra
μm
0.8
- Tolerance for finished tube wall thickness at wall thickness reduction of at least 50%, not more
%
±6.0
- Tolerance for finished tube outer diameter
mm
%
±0.7
± 0.2-0.3
- Work stand stroke length,
- Work cassette stroke length
mm
1600-1700
1100
- Rolling die working zone, not more
mm
950
- Stand maximum speed
stroke/min
45
- Stand rolling speed for the 1-6-steel grades, not less
stroke/min
30
- Feeding value (per half stroke)
mm
2-25
- Rotate value (per half stroke)
degree
23-35
- Maximum elongation ratio
6
Fig. 5 Functional configuration of ACS PLC performs data collection and processing from all units coming under control and monitoring, and forms requisite control actions to executing mechanism according to the program logic.
Calculation of Effective Reduction Ratio The moments of inertia values of the feed and turn mechanism are very high.
Fig. 5 Functional configuration of ACS PLC performs data collection and processing from all units coming under control and monitoring, and forms requisite control actions to executing mechanism according to the program logic.
Calculation of Effective Reduction Ratio The moments of inertia values of the feed and turn mechanism are very high.
Online since: January 2021
Authors: Cheng Ying Shi, Guang Hong Wang
Transmittance spectra of the IHFO and IHFO:H films
Based on the transmittance and reflectance data of the films, the optical band gap (Eg) is calculated by Tauc's equation (3) [9].
The ρ reduction and n increment of IHFO:H film further show that H can incorporate in high concentrations and behave as a shallow donor state.
The carrier transport is enhanced due to the reduction of the contribution of the grain-boundary scattering mechanism by H dopant [10].
The ρ reduction and n increment of IHFO:H film further show that H can incorporate in high concentrations and behave as a shallow donor state.
The carrier transport is enhanced due to the reduction of the contribution of the grain-boundary scattering mechanism by H dopant [10].
Online since: March 2012
Authors: Ichiro Yonenaga, Yutaka Ohno, Kaihei Inoue, Yuki Tokumoto, Kentaro Kutsukake
This easily leads to a reduction of ionization ratio in semiconductors [5].
In addition, In atoms have an tendency to form complexes with themselves and/or interstitial Si atoms, resulting in a reduction of the number of electrically active atoms.
Data in In-doped Si is superimposed.
In addition, In atoms have an tendency to form complexes with themselves and/or interstitial Si atoms, resulting in a reduction of the number of electrically active atoms.
Data in In-doped Si is superimposed.
Online since: September 2013
Authors: Xian Wei Wu, Yu Bing Yang, Wen Yang Yu
Considering that higher dimension, more calculation, and less speed, here we introduce an effective dimensionality reduction algorithm: SPCA.
The SPCA algorithm[11] is given as: ①collect of an dimensional data set,V={v1,v2,…,vm} ②X={ x1,x2,…,xm },which are obtained by subtracting which is the average value of form the center of gravity of set of the vectors, is used as input vectors. ③The column vector is defined as connection weights between the inputs and output.
Fig.3 is the examples of retrieval results of integrated features after dimensionality reduction.
The SPCA algorithm[11] is given as: ①collect of an dimensional data set,V={v1,v2,…,vm} ②X={ x1,x2,…,xm },which are obtained by subtracting which is the average value of form the center of gravity of set of the vectors, is used as input vectors. ③The column vector is defined as connection weights between the inputs and output.
Fig.3 is the examples of retrieval results of integrated features after dimensionality reduction.