Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: October 2010
Authors: Guo Ming Yuan, Ming Lei Li, Jian Wang, Hong Xiao
It was approved that the prediction precision was
obviously enhanced compared with the practical data for vertical rolling force.
Thickness is 200 mm, width is taken from 40 mm to 1600 mm, rolling reductions are 20 mm and 50 mm.
Fig. 3 and Fig. 5 shows the changes of vertical rolling fore with the change of the thickness, width, reduction of slab.
Taking Tselikov empirical formula from experience of experimental data as regression model, rQ is obtained through regression by MATLAB.
Vertical rolling forces of 1780 hot strip mill in some steel are calculated using the obtained formula in the article, the results noticeably improved the accuracy compared to the field data.
Thickness is 200 mm, width is taken from 40 mm to 1600 mm, rolling reductions are 20 mm and 50 mm.
Fig. 3 and Fig. 5 shows the changes of vertical rolling fore with the change of the thickness, width, reduction of slab.
Taking Tselikov empirical formula from experience of experimental data as regression model, rQ is obtained through regression by MATLAB.
Vertical rolling forces of 1780 hot strip mill in some steel are calculated using the obtained formula in the article, the results noticeably improved the accuracy compared to the field data.
Online since: June 2011
Authors: Hai Liang Yu, Xianghua Liu
Reduction of cracks is important for the improvement of slab quality.
The heat treatment method was also employed to restore the plasticity margin destroyed in cold plastic deformation and to avoid damage by Kolmogorov et al [13], and experimental data indicated that the micro-damages in metal materials heal.
(1) where, is the shear strength, is the reduction ratio.
When the reduction ratio reaches 20~30%, as the reduction ratio further increases, the size and the number of dimple fracture zones increase (Fig. 7 (c) and (d)).
When the reduction ratio is less than 10%, the shear strength of crack healing zone increases linearly direct to the reduction ratio, and as the reduction ratio further increases, the amplification of shear strength of crack healing zone gradually decreases
The heat treatment method was also employed to restore the plasticity margin destroyed in cold plastic deformation and to avoid damage by Kolmogorov et al [13], and experimental data indicated that the micro-damages in metal materials heal.
(1) where, is the shear strength, is the reduction ratio.
When the reduction ratio reaches 20~30%, as the reduction ratio further increases, the size and the number of dimple fracture zones increase (Fig. 7 (c) and (d)).
When the reduction ratio is less than 10%, the shear strength of crack healing zone increases linearly direct to the reduction ratio, and as the reduction ratio further increases, the amplification of shear strength of crack healing zone gradually decreases
Online since: March 2010
Authors: Pei Long Wang, Ming Chen, Z.Q. Wang, Hua Song, Li Hua Fu
Reference [1] focused on the numerical simulation of nine roller H-straightening, on
the occasion that only one of the roller reductions changes, the other three rollers do not change,
then it discussed the impact to residual stress of straightened rail caused by the reduction.
FEM Model Foundation of Rail Straightening Through the data of certain factory, the limited value of original bending curvature radius is 63m.
Experimental Plan Design In rail actual compound straightening process, the reductions of 2#, 4#, 6# and 8# roller in the H-straightener can be adjusted, the reduction of 11#, 13#, 15# and 17# roller in the V-straightener can also be adjusted.
In the on-site actual straightening regulation, 17# roller in the V-straightener does not roll down, the reduction value is 0mm, the active reduction value of 2#,4#,6#,8#,11#,13# and 15# roller are respectively 19.2mm,11.2mm,7.9mm,3.5mm,12.0mm,6.0mm and 2.5mm.
Tian: Experimental Design and Data Process (Chemical Industry Press, Beijing 2005).
FEM Model Foundation of Rail Straightening Through the data of certain factory, the limited value of original bending curvature radius is 63m.
Experimental Plan Design In rail actual compound straightening process, the reductions of 2#, 4#, 6# and 8# roller in the H-straightener can be adjusted, the reduction of 11#, 13#, 15# and 17# roller in the V-straightener can also be adjusted.
In the on-site actual straightening regulation, 17# roller in the V-straightener does not roll down, the reduction value is 0mm, the active reduction value of 2#,4#,6#,8#,11#,13# and 15# roller are respectively 19.2mm,11.2mm,7.9mm,3.5mm,12.0mm,6.0mm and 2.5mm.
Tian: Experimental Design and Data Process (Chemical Industry Press, Beijing 2005).
Online since: April 2023
Authors: Yaou Wang, Chris Nault, Matthew Givens, Hai Tao Zhang, Ke Li
Fig. 5(b) shows the process to generate the function from the test data.
BOP shearing test data.
Illustrations of using shearing test data to develop the damage parameter function, f.
Illustrations of using shearing test data to develop the damage parameter function, f.
The predicted shearing pressure agrees with the test data, and max error is 11%.
BOP shearing test data.
Illustrations of using shearing test data to develop the damage parameter function, f.
Illustrations of using shearing test data to develop the damage parameter function, f.
The predicted shearing pressure agrees with the test data, and max error is 11%.
Online since: January 2012
Authors: Li Jun Chen, Chao Xu, Shan Rang Yang, Li Jun Mi
At present, the development of power industry is facing the pressure of energy saving and emission reduction.
Power industry as the large user of energy production and consumption is the key field of energy saving and emission reduction.
At present, energy conservation and emission reduction is arduous task in the "11th five-year" plan.
It is of great significance for energy conservation and emission reduction in power industry to finish "11th five-year" plan.
[13] National Coal-fired Units Technical Association, “Competition data analysis of national thermal power plant units (600MW grade) in 2008,” Electric Power Technology,vol.6,pp.1-3,2009.
Power industry as the large user of energy production and consumption is the key field of energy saving and emission reduction.
At present, energy conservation and emission reduction is arduous task in the "11th five-year" plan.
It is of great significance for energy conservation and emission reduction in power industry to finish "11th five-year" plan.
[13] National Coal-fired Units Technical Association, “Competition data analysis of national thermal power plant units (600MW grade) in 2008,” Electric Power Technology,vol.6,pp.1-3,2009.
Online since: June 2019
Authors: Tom Savu
The hardware consists of two linear and one rotary encoder, all sending the data to a counter/timer data acquisition board.
The goal of the work described in this paper was to develop a data acquisition system and the corresponding data processing software for measuring the standardised ship propeller’s parameters.
Data Processing Aligning the coordinates systems.
Scanned data processing.
Even if there are small chances for useful data to be gathered from small angular step measurements and one can think that these affected data may be ignored, further software developments will have to bring some improvements of this aspect for reducing void data propagation.
The goal of the work described in this paper was to develop a data acquisition system and the corresponding data processing software for measuring the standardised ship propeller’s parameters.
Data Processing Aligning the coordinates systems.
Scanned data processing.
Even if there are small chances for useful data to be gathered from small angular step measurements and one can think that these affected data may be ignored, further software developments will have to bring some improvements of this aspect for reducing void data propagation.
Online since: January 2014
Authors: Wei Yin
Keywords: Carbon dioxide; Solidification; Kinetics; Thermodynamics; Reduction emission.
The data are listed in Table 1. ③ Air ② CO2 ①NH3∙H2O (NH4)2SO4, CaCO3 or Mg(OH)2 and other less inorganic species.
Results and Discussion 3.1 Optimization of process That the two sets of data listed in Table 1 from an open and a closed system experiments, respectively, show that carbon dioxide reacts with calcium sulfate and ammonia to produce calcium Table 1 Data obtained from open system and closed system Partial pressure (MPa) 0.025a 0.05a 0.075a 0.025b 0.05b 0.075b CaSO4/g 86.13a 86.43a 86.13a 86.07b 86.02b 86.11b H2O/mL 150 150 150 150 150 150 NH3·H2O (35%)/mL 38 38 38 38 38 38 Reaction time/min 8a 6a 5a 6b 5b 4b CO2 volume/L 31.2a 40.2a 52.0a 11.2b 11.2b 11.2b CO2 gas solidification (%) 36% 28% 22% 100% 100% 100% a: open system data; b: for closed system data.
The data are recorded and listed in Table 2, respectively.
Data Vol. 51 (5) (2006) , p. 1788
The data are listed in Table 1. ③ Air ② CO2 ①NH3∙H2O (NH4)2SO4, CaCO3 or Mg(OH)2 and other less inorganic species.
Results and Discussion 3.1 Optimization of process That the two sets of data listed in Table 1 from an open and a closed system experiments, respectively, show that carbon dioxide reacts with calcium sulfate and ammonia to produce calcium Table 1 Data obtained from open system and closed system Partial pressure (MPa) 0.025a 0.05a 0.075a 0.025b 0.05b 0.075b CaSO4/g 86.13a 86.43a 86.13a 86.07b 86.02b 86.11b H2O/mL 150 150 150 150 150 150 NH3·H2O (35%)/mL 38 38 38 38 38 38 Reaction time/min 8a 6a 5a 6b 5b 4b CO2 volume/L 31.2a 40.2a 52.0a 11.2b 11.2b 11.2b CO2 gas solidification (%) 36% 28% 22% 100% 100% 100% a: open system data; b: for closed system data.
The data are recorded and listed in Table 2, respectively.
Data Vol. 51 (5) (2006) , p. 1788
Simulation Analysis and Experiment Research on Vehicle Interior Adaptive Active Noise Control System
Online since: January 2015
Authors: Ji Guang Jiang, Yue Zeng
Active noise reduction method has low frequency noise control effect is good, can be selectively noise elimination and other advantages, has become the focus of attention.
This paper establishes the simulation model of the active noise reduction system in the MATLAB/Simulink environment, the simulation analysis of a large number of the relevant parameters of active adaptive control algorithm; in a light bus was constructed in the active noise control system in vehicle, the implementation of active noise reduction test, has achieved a good result.
When the engine speed and stable operation in 1080rpm and 2400rpm, the experiment data are analyzed, comparison of the test results of active control system of driver's right ear before and after the opening time curve and frequency curve are shown in Figure 3 and Figure 4
Sound pressure level of each noise peak value was synthesizing, get the overall sound pressure level of interior noise, it can calculate noise reduction amount of vehicle active noise reduction test.
According to this method, calculates noise reduction amount of adaptive active noise control test under two different speed of engine, as shown in. table 2.
This paper establishes the simulation model of the active noise reduction system in the MATLAB/Simulink environment, the simulation analysis of a large number of the relevant parameters of active adaptive control algorithm; in a light bus was constructed in the active noise control system in vehicle, the implementation of active noise reduction test, has achieved a good result.
When the engine speed and stable operation in 1080rpm and 2400rpm, the experiment data are analyzed, comparison of the test results of active control system of driver's right ear before and after the opening time curve and frequency curve are shown in Figure 3 and Figure 4
Sound pressure level of each noise peak value was synthesizing, get the overall sound pressure level of interior noise, it can calculate noise reduction amount of vehicle active noise reduction test.
According to this method, calculates noise reduction amount of adaptive active noise control test under two different speed of engine, as shown in. table 2.
Online since: February 2014
Authors: Hong Wen Yang, Da Cheng Yang, Min Wei
In this paper, we compare the maximum achievable data rate, i.e. the Shannon capacity, of DFT-S-OFDM and OFDM under Rayleigh and with clipping.
It is well known that the achievable data rate of any practical system is upper bounded by the Shannon capacity.
Our results show that, in case of Gaussian data symbols, OFDM outperforms DFT-S OFDM.
The channel capacity is given by (5) where is the signal-to-noise ratio of data symbol si.
Multicarrier modulation for data transmission: An idea whose time has come, IEEE Communication Magazine, May 1990
It is well known that the achievable data rate of any practical system is upper bounded by the Shannon capacity.
Our results show that, in case of Gaussian data symbols, OFDM outperforms DFT-S OFDM.
The channel capacity is given by (5) where is the signal-to-noise ratio of data symbol si.
Multicarrier modulation for data transmission: An idea whose time has come, IEEE Communication Magazine, May 1990
Online since: October 2011
Authors: Chao Heng Tseng, Peng Yu Chen, Yen Kuang Lin, Yi Hsuan Shih, Yu Ling Chen
The "Air Resource Co-benefits (ARCoB) Model" was developed in this study to integrated the health benefits from the reduction of criteria pollutants (the averted loss of life expectancy and annual medical expenditure) and the ecological benefits from the reduction of greenhouse gases (GHGs) (the averted carbon tax) from the promotion of the alternative fuel vehicles currently on the market.
From cost-benefit analysis, the amount of money would be appropriate for government subsidy and reduction of the manufacturing cost for alternative fuel vehicles were suggested for the policy makers and automobile enterprises in this study.
It is estimated by the following equation: Attributable proportion (AP) = (RR-1)/RR eq.(1) The benefit of averted mortality, i.e. the reduction of Loss of Life Expectancy (LLE), from the reduction of criteria pollutants was estimated by the Taiwanese abridged life table; the benefit of averted morbidity from that was estimated by the Taiwanese medical expenditure provided by the Department of Health.
References [1] TEDs 7.0 (Taiwan Emission Data System),http://www.epa.gov.tw/ [2] IPCC(Intergovernmental Panel on Climate Change),http://www.ipcc.ch/ [3] Taiwan power company,http://www.taipower.com.tw/ [4] Hongjhih Lin, The Simulation and Social Benefits of Greenhouse Gas and Criteria Air pollution Reduction in Taipei City by System Dynamic Model STELLA, Master Thesis, National Taipei University of Technology, Taipei, Taiwan, 2008.
(In Chinese) [5] Zhixiang Yang, Economic Benefit of Air Pollution Reduction by contingent valuation method in Taiwan, Master Thesis, National Taipei University of Technology, Tainan, Taiwan, 2009.
From cost-benefit analysis, the amount of money would be appropriate for government subsidy and reduction of the manufacturing cost for alternative fuel vehicles were suggested for the policy makers and automobile enterprises in this study.
It is estimated by the following equation: Attributable proportion (AP) = (RR-1)/RR eq.(1) The benefit of averted mortality, i.e. the reduction of Loss of Life Expectancy (LLE), from the reduction of criteria pollutants was estimated by the Taiwanese abridged life table; the benefit of averted morbidity from that was estimated by the Taiwanese medical expenditure provided by the Department of Health.
References [1] TEDs 7.0 (Taiwan Emission Data System),http://www.epa.gov.tw/ [2] IPCC(Intergovernmental Panel on Climate Change),http://www.ipcc.ch/ [3] Taiwan power company,http://www.taipower.com.tw/ [4] Hongjhih Lin, The Simulation and Social Benefits of Greenhouse Gas and Criteria Air pollution Reduction in Taipei City by System Dynamic Model STELLA, Master Thesis, National Taipei University of Technology, Taipei, Taiwan, 2008.
(In Chinese) [5] Zhixiang Yang, Economic Benefit of Air Pollution Reduction by contingent valuation method in Taiwan, Master Thesis, National Taipei University of Technology, Tainan, Taiwan, 2009.