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Online since: July 2014
Authors: Hung Wei Hsieh, Chun Ming Chen, Tsair Rong Chen, Yu Lin Juan, Peng Lai Chen
A microcontroller unit (MCU) is used to replace the common DAQ card for cost reduction.
A complete testing data can be provided by the LabVIEW at the end of the testing cycle.
The measured data were used to analyze the status of the batteries.
Based on the measured data, LabVIEW can judge battery charging and discharging.
[6] “What Is Data Acquisition?”
A complete testing data can be provided by the LabVIEW at the end of the testing cycle.
The measured data were used to analyze the status of the batteries.
Based on the measured data, LabVIEW can judge battery charging and discharging.
[6] “What Is Data Acquisition?”
Online since: August 2013
Authors: Shi Man Sun, Wen Zhang, Jun Ku Xu
As we know, average is a kind of measure which reflects a set of data on the trend.
In application, we also need to know each data relative to the group average, which means how this group of data fluctuates (that is, how far from the average).
In the same sample size (data number), the greater the variance, the bigger fluctuations this group data have.
Assume that the data researched belongs to the normal distribution, and variance are unknown (without prior provide, in accordance with the data).
The calculation results of power capacity in the 2 large airports are identical with their actual operation data.
In application, we also need to know each data relative to the group average, which means how this group of data fluctuates (that is, how far from the average).
In the same sample size (data number), the greater the variance, the bigger fluctuations this group data have.
Assume that the data researched belongs to the normal distribution, and variance are unknown (without prior provide, in accordance with the data).
The calculation results of power capacity in the 2 large airports are identical with their actual operation data.
Online since: February 2013
Authors: Gyula Varga, János Kundrák
To remain competitive a company must continually identify cost reduction opportunities in production, exploit economic opportunities, and continuously improve production processes.
The elimination of coolants or significant reduction in cooling lubricants affects all components of a production system.
There are efforts for reductions of these effects all over the world.
The availability of 3D data made possible to simulate researches in many fields.
Generally, they can be divided into distinct groups: · amplitude parameters - being measures of the vertical characteristics of the surface deviations; · spacing parameters - being measures of the horizontal characteristics of the surface deviations; · hybrid parameters - are some combination of amplitude and spacing parameters; · statistical parameters - amplitude heights treated as statistical data sets.
The elimination of coolants or significant reduction in cooling lubricants affects all components of a production system.
There are efforts for reductions of these effects all over the world.
The availability of 3D data made possible to simulate researches in many fields.
Generally, they can be divided into distinct groups: · amplitude parameters - being measures of the vertical characteristics of the surface deviations; · spacing parameters - being measures of the horizontal characteristics of the surface deviations; · hybrid parameters - are some combination of amplitude and spacing parameters; · statistical parameters - amplitude heights treated as statistical data sets.
Online since: February 2016
Authors: Alexander Pesin, D.O. Pustovoytov
The first unit in a wide strip hot rolling mill sequence is a vertical roughing scale breaker designed for reduction of a slab in width and for descaling.
Formation of bulges during the first cross reduction of cast slabs promotes the shift of longitudinal and transverse cracks towards the center of a rolled product.
So, during rolling of cast slabs with this mode the shift of defects from edges to the center is even more than in the case of reduction of a slab in height only.
It was a one-pass rolling with reduction in width 90 mm.
As a result of the performed FEM modeling of roughing rolling of slabs and the statistical data processing the following regression equations have been obtained for the purpose of determination of contact bulging height during rolling in vertical grooved rolls (correlation coefficient R=0.981): if , (3) if , (4) where – bulging height, mm; – width of a rolled piece at the entry to the rolls, mm; – friction parameter; – absolute reduction in width, mm.
Formation of bulges during the first cross reduction of cast slabs promotes the shift of longitudinal and transverse cracks towards the center of a rolled product.
So, during rolling of cast slabs with this mode the shift of defects from edges to the center is even more than in the case of reduction of a slab in height only.
It was a one-pass rolling with reduction in width 90 mm.
As a result of the performed FEM modeling of roughing rolling of slabs and the statistical data processing the following regression equations have been obtained for the purpose of determination of contact bulging height during rolling in vertical grooved rolls (correlation coefficient R=0.981): if , (3) if , (4) where – bulging height, mm; – width of a rolled piece at the entry to the rolls, mm; – friction parameter; – absolute reduction in width, mm.
Online since: February 2014
Authors: Zhi Qin Zhu, Shao Tao Dai, Tao Ma, Liang Zhen Lin, Yu Ping Teng, Li Ye Xiao, Nai Hao Song, Xue Min Liang, Zhi Cheng Cao, Dong Zhang, Zhi Yuan Gao
The critical current test and data analysis are finished before the demonstration operation of the 10 kA HTS cable.
UKF, particle filter and Wavelet noise reduction are the effective ways to process the nonlinear and non-Gaussian signal, but theirs calculation burden is too heavy.
Adaptive noise reduction has a faster calculation speed, but it requires a reference signal, so the superconducting cable voltage signal is difficult to detect by using the adaptive noise reduction.
Commonly used ICA methods include FastICA algorithm, EASI algorithm, nonlinear PCA and maximum likelihood estimation algorithm based on natural gradient, which FastICA can better reduction the noise[7-8].
[7] Liu, Y.; Wang, H.; Hou, C., "UKF Based Nonlinear Filtering Using Minimum Entropy Criterion," Signal Processing, IEEE Transactions on , vol.61, no.20, pp.4988,4999, Oct.15, 2013 [8] Ram, M.R.; Madhav, K.V.; Krishna, E.H.; Komalla, N.R.; Sivani, K.; Reddy, K.A., "ICA-Based Improved DTCWT Technique for MA Reduction in PPG Signals With Restored Respiratory Information," Instrumentation and Measurement, IEEE Transactions on , vol.62, no.10, pp.2639,2651, Oct. 2013 [9] Dong Zhang, Shaotao Dai, Yuping Teng, et al, Testing Results for the Cable Core of a 360 m/10 kA HTS DC Power Cable Used in the Electrolytic Auminum Industry, Volume 23, Issue 3, Pages 5400504 (June 2013) [10] Xuemin Liang, Shaotao Dai, Zhiyuan Gao, et al.
UKF, particle filter and Wavelet noise reduction are the effective ways to process the nonlinear and non-Gaussian signal, but theirs calculation burden is too heavy.
Adaptive noise reduction has a faster calculation speed, but it requires a reference signal, so the superconducting cable voltage signal is difficult to detect by using the adaptive noise reduction.
Commonly used ICA methods include FastICA algorithm, EASI algorithm, nonlinear PCA and maximum likelihood estimation algorithm based on natural gradient, which FastICA can better reduction the noise[7-8].
[7] Liu, Y.; Wang, H.; Hou, C., "UKF Based Nonlinear Filtering Using Minimum Entropy Criterion," Signal Processing, IEEE Transactions on , vol.61, no.20, pp.4988,4999, Oct.15, 2013 [8] Ram, M.R.; Madhav, K.V.; Krishna, E.H.; Komalla, N.R.; Sivani, K.; Reddy, K.A., "ICA-Based Improved DTCWT Technique for MA Reduction in PPG Signals With Restored Respiratory Information," Instrumentation and Measurement, IEEE Transactions on , vol.62, no.10, pp.2639,2651, Oct. 2013 [9] Dong Zhang, Shaotao Dai, Yuping Teng, et al, Testing Results for the Cable Core of a 360 m/10 kA HTS DC Power Cable Used in the Electrolytic Auminum Industry, Volume 23, Issue 3, Pages 5400504 (June 2013) [10] Xuemin Liang, Shaotao Dai, Zhiyuan Gao, et al.
Online since: May 2014
Authors: Nikolai Kashaev, Volker Ventzke, Manfred Horstmann, Stefan Riekehr
Weight reduction is the main driving force in automotive and aircraft structural design.
The determining criterion for the structural applications of magnesium alloys is the availability of efficient joining technologies for the construction of lightweight structures and the availability of reliable data for the assessment of their damage tolerance behaviour.
The use of magnesium can contribute significantly to mass reduction due to the combination of its low density, high specific strength, high stiffness, and good castability [1-3].
The reduction of the FCP-rate in the WM could be caused due to intercrystalline crack growth.
The determining criterion for the structural applications of magnesium alloys is the availability of efficient joining technologies for the construction of lightweight structures and the availability of reliable data for the assessment of their damage tolerance behaviour.
The use of magnesium can contribute significantly to mass reduction due to the combination of its low density, high specific strength, high stiffness, and good castability [1-3].
The reduction of the FCP-rate in the WM could be caused due to intercrystalline crack growth.
Online since: November 2006
Authors: Piero Morelli, Sergio Maldotti, Tito Poli, Pier Gabriele Molari
A non linear regression
interpolation of the hardness
experimental data is given in Eq. 1,
as a function of the temperature θ
and the time t.
Fatigue data is plotted in the chart of Fig. 5 and curves at constant failure probability are calculated by a maximum likelihood estimate on failure and censored data [5,6].
We define the likelihood function as follows: ∏∏ == ⋅= = h j j k i i LL BALL 1 1),,( β , (3) where ),,;,(),,( βσ β BANfBAL ii i = is the i-th likelihood contribution of the k data set of failed specimens, and ∫−= jN j j dxBAxf BAL 0 ),,;,(1),,( βσ β is the j-th likelihood contribution of the h censored data set of run out specimens.
Hardness differences are small but yet statistically significant, due to the high accuracy of measures and the resulting low standard deviation of data.
[5] W.Nelson: Applied Life Data Analysis, J.
Fatigue data is plotted in the chart of Fig. 5 and curves at constant failure probability are calculated by a maximum likelihood estimate on failure and censored data [5,6].
We define the likelihood function as follows: ∏∏ == ⋅= = h j j k i i LL BALL 1 1),,( β , (3) where ),,;,(),,( βσ β BANfBAL ii i = is the i-th likelihood contribution of the k data set of failed specimens, and ∫−= jN j j dxBAxf BAL 0 ),,;,(1),,( βσ β is the j-th likelihood contribution of the h censored data set of run out specimens.
Hardness differences are small but yet statistically significant, due to the high accuracy of measures and the resulting low standard deviation of data.
[5] W.Nelson: Applied Life Data Analysis, J.
Online since: January 2024
Authors: Eny Latifah, Nadiya Miftachul Chusna, Nandang Mufti, Sunaryono Sunaryono, Ahmad Taufiq, M. Ikhwan Najmi
The rGO was obtained from the chemical reduction of GO by hydrazine hydrate as the reduction agent.
The refinement analysis reveals that the profile data for Mn0.25Fe2.75O4/rGO corresponds to the COD model No. 900-2138, as shown in Figure 2.
Furthermore, based on the data analysis, the average particle diameter of Mn0.25Fe2.75O4/rGO was successfully determined using the Scherer formula [29], resulting in a value of 10.3 nm.
XRD data refinement results for the Mn0.25Fe2.75O4/rGO sample The Specific Surface Area was measured with BET (Brunauer–Emmett–Teller) Theory to evaluate the gas adsorption data and generate a specific surface area result expressed in units of area per mass of sample (m2/g).
The Specific Surface Area was measured by analysis the data in Figure 3 (a) and (b).
The refinement analysis reveals that the profile data for Mn0.25Fe2.75O4/rGO corresponds to the COD model No. 900-2138, as shown in Figure 2.
Furthermore, based on the data analysis, the average particle diameter of Mn0.25Fe2.75O4/rGO was successfully determined using the Scherer formula [29], resulting in a value of 10.3 nm.
XRD data refinement results for the Mn0.25Fe2.75O4/rGO sample The Specific Surface Area was measured with BET (Brunauer–Emmett–Teller) Theory to evaluate the gas adsorption data and generate a specific surface area result expressed in units of area per mass of sample (m2/g).
The Specific Surface Area was measured by analysis the data in Figure 3 (a) and (b).
Online since: May 2011
Authors: Dong Hui Cheng, Wei Rong, Jia Yuan
And optimization method is applied to engineering practice, the experimental data shows: this optimization design method improves the safety of structures and obtains good economic benefit.
(5) In the equation: — Calculation of layer thickness(m); — Weight of soil(kN/m3) According to the measured data of construction in Beijing, equivalent angle of internal friction φz can be estimated according to the equation below: (1) For silty clay, powder milling soil, coarse sand, medium sand, sand and other most soil conditions, the equation can be estimated:
Table 2 The results of soil compared before and after optimization Maximum moment(kN•m) Reinforcement required before optimization The required reinforcement after optimization Comparative results 500 1422 1122 Reduction of 3 600 1722 1222 Reduction of 5 700 2022 1422 Reduction of 6 800 2322 1522 Reduction of 8 1000 3022 1922 Reduction of 11 From the result in table 2, it can be seen the amount of steel used in the optimized slope protection pile is reduced markedly.
The horizontal displacement observation points arrangement are shown in Fig.6 and the measured results refer to table 3: Table 3 Horizontal displacement data table Loading level 0.1Nu 0.2Nu 0.4Nu Observation time (min) 5 5 5 Loading level 0.6Nu 0.8Nu 1.0Nu Observation time (min) 10 10 15 It can be seen that the top displacement of the support structure was in a stable condition during the process from soil excavated to the foundation slab completed and about 1.20m soil backfilled, which indicated that the overall support structure is safe and reliable.
prestressed anchor bar is as follows: Table 5 Prestressed anchor test data sheet Stretching equipment Jack number:2316,Manometer number:6252,High-pressure pump model:2YBZ2-80 No.
(5) In the equation: — Calculation of layer thickness(m); — Weight of soil(kN/m3) According to the measured data of construction in Beijing, equivalent angle of internal friction φz can be estimated according to the equation below: (1) For silty clay, powder milling soil, coarse sand, medium sand, sand and other most soil conditions, the equation can be estimated:
Table 2 The results of soil compared before and after optimization Maximum moment(kN•m) Reinforcement required before optimization The required reinforcement after optimization Comparative results 500 1422 1122 Reduction of 3 600 1722 1222 Reduction of 5 700 2022 1422 Reduction of 6 800 2322 1522 Reduction of 8 1000 3022 1922 Reduction of 11 From the result in table 2, it can be seen the amount of steel used in the optimized slope protection pile is reduced markedly.
The horizontal displacement observation points arrangement are shown in Fig.6 and the measured results refer to table 3: Table 3 Horizontal displacement data table Loading level 0.1Nu 0.2Nu 0.4Nu Observation time (min) 5 5 5 Loading level 0.6Nu 0.8Nu 1.0Nu Observation time (min) 10 10 15 It can be seen that the top displacement of the support structure was in a stable condition during the process from soil excavated to the foundation slab completed and about 1.20m soil backfilled, which indicated that the overall support structure is safe and reliable.
prestressed anchor bar is as follows: Table 5 Prestressed anchor test data sheet Stretching equipment Jack number:2316,Manometer number:6252,High-pressure pump model:2YBZ2-80 No.
Online since: December 2021
Authors: Andrey N. Dmitriev, Galina Yu. Vitkina, Roman V. Alektorov, Elena A. Vyaznikova, Alexey B. Shubin
Metallurgical characteristics of iron ore agglomerates of various basicity (reducibility, strength after reduction (LTD+6.3), temperatures of the beginning and ending of softening) have been investigated.
The effectiveness is then determined by the thermodynamic equilibrium conditions of the iron oxide reduction reaction in a blast furnace, depending on the blast and charge conditions.
Metallurgical characteristics of pellets are reducibility, reduction strength (LTD+6.3), softening interval.
For agglomerate samples with basicity 1.73, besides magnetite, hematite and SFCA, a small amount of two-calcium silicate was found, which resulted in significant reduction of strength index during reduction of LTD+6.3.
Calcium ferrites do not get destroyed during reduction until the appearance of metallic iron
The effectiveness is then determined by the thermodynamic equilibrium conditions of the iron oxide reduction reaction in a blast furnace, depending on the blast and charge conditions.
Metallurgical characteristics of pellets are reducibility, reduction strength (LTD+6.3), softening interval.
For agglomerate samples with basicity 1.73, besides magnetite, hematite and SFCA, a small amount of two-calcium silicate was found, which resulted in significant reduction of strength index during reduction of LTD+6.3.
Calcium ferrites do not get destroyed during reduction until the appearance of metallic iron