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Online since: September 2013
Authors: Jin Liang Huang, Yu Xin Jia, Jian Feng
The plates were hot rolled to sheets with a final thickness of 4mm at a reduction of 15-20% per pass at 553K.
Combining with the data analysis result, it could be found that the aging treatment leads to the decomposition of the β-Li phases, but the solid solution treatment can produce more β-Li phases due to the diffusion of Li atom at high temperature.
The results show that the insufficent solid solution strengthening and soft annealing of the investigated alloy leads to the reduction of the tensile strength, while the increasing of the elongation due to the diffusion of the Li atom.
Combining with the data analysis result, it could be found that the aging treatment leads to the decomposition of the β-Li phases, but the solid solution treatment can produce more β-Li phases due to the diffusion of Li atom at high temperature.
The results show that the insufficent solid solution strengthening and soft annealing of the investigated alloy leads to the reduction of the tensile strength, while the increasing of the elongation due to the diffusion of the Li atom.
Online since: September 2014
Authors: Guan Qiang Ruan, Jin Run Cheng
Using high pressure injection technology can reduce PM emissions of combustion in cylinder, and then take the Selective Catalytic Reduction (SCR) technology to control NOx as the main way of electronic-control diesel engine exhaust gas processing [1].
This management can make it more similar to the actual situation, closer to the test data [2]
Modeling catalytic reduction of NO by ammonia OVeF V205.
This management can make it more similar to the actual situation, closer to the test data [2]
Modeling catalytic reduction of NO by ammonia OVeF V205.
Online since: September 2014
Authors: Gilberto Carvalho Coelho, Geovani Rodrigues, Eduardo Carvalho Rossi, Alexandre Nogueira Ottoboni Dias, Andersan dos Santos Paula, Márcia Regina Baldissera, Alfredo Yassuo Oshiro
The use of these steels enables the reduction of vehicle weight and therefore reduction of the consumption and emissions [1-3].
The Fig. 3 shows the data obtained from hardness testing of the samples quenched.
The Fig. 3 shows the data obtained from hardness testing of the samples quenched.
Online since: August 2013
Authors: Zi Yu Zhao, Su Zhi Zhang, Jin Guo Yang
The grinding force acquisition system includes three-way of piezoelectric dynamic the dynamometer (Kistler9257B) and data acquisition system (DEVE2010).
When the temperature reaches 800℃, the ratio falls to about 70%.It means the hardness of the material has a significant reduction and a serious thermal damage.
The ratio of grinding energy has a significant reduction with the temperature rising.
When the temperature reaches 800℃, the ratio falls to about 70%.It means the hardness of the material has a significant reduction and a serious thermal damage.
The ratio of grinding energy has a significant reduction with the temperature rising.
Online since: October 2025
Authors: Ojo S. I. Fayomi
D/Max-llC X-ray diffractometer (Rigaku; Tokyo) was used to analyse the intermetallic phase distribution along a Bragg angles.
3 Results and Discussion
3.1 Electrochemical Analysis
The Tafel data summary of the developed sample in a 0.5M HCl corrosive environment is shown in Table 3.
From the polarization data, a reduction in corrosion rate is observed as the particulate content of SSP increased from 0-25%.
From the plot, the reduction in both anodic and cathodic reaction can be observed as the plot depicts to be narrower as the SSP content in the Al matrix.
The positive shift in potential across the samples from the Tafel data of Table 3 and the LSV plot in Fig. 1 attest to the SSP particulates also favouring cathodic reactions.
Electrochemical studies were done that showed a significant increase in the reduction of the corrosion rate with an increased content of SSP, varying from 12.06 mm/yr for the control sample to 7.59 mm/yr for the most reinforced, 75Al-25SSP, which guarantees a reduction of 40.1%.
From the polarization data, a reduction in corrosion rate is observed as the particulate content of SSP increased from 0-25%.
From the plot, the reduction in both anodic and cathodic reaction can be observed as the plot depicts to be narrower as the SSP content in the Al matrix.
The positive shift in potential across the samples from the Tafel data of Table 3 and the LSV plot in Fig. 1 attest to the SSP particulates also favouring cathodic reactions.
Electrochemical studies were done that showed a significant increase in the reduction of the corrosion rate with an increased content of SSP, varying from 12.06 mm/yr for the control sample to 7.59 mm/yr for the most reinforced, 75Al-25SSP, which guarantees a reduction of 40.1%.
Online since: October 2021
Authors: Akii Okonigbon Akaehomen Ibhadode, Abhulimhen Solomon Okouzi, Albert Imuetinyan Obanor
The developed model predicted the behaviour of the airflow inside the dryer and numerical results compared satisfactorily with experimental data
The results of the ANN model were also validated with experimental drying data of jaggery mass.
Consequently, RSM initiates from design of experiments to determine the factors’ values for conducting experiments and collecting data.
Cohen, Multiple regression as a general data-analytic system, Psychological Bulletin. 70(6) (1968) 426-443
Anderson, Multivariate Data Analysis, seventh ed., Pearson Prentice Hall, New Jersey, 2010
The results of the ANN model were also validated with experimental drying data of jaggery mass.
Consequently, RSM initiates from design of experiments to determine the factors’ values for conducting experiments and collecting data.
Cohen, Multiple regression as a general data-analytic system, Psychological Bulletin. 70(6) (1968) 426-443
Anderson, Multivariate Data Analysis, seventh ed., Pearson Prentice Hall, New Jersey, 2010
Online since: September 2014
Authors: Pongthep Suwanwaree, Glinsukol Suwannarat
Three scenarios (present, 10 years, and 10 years with 25% BOD reduction) were simulated.
The seasonal effect on Lam Takong water quality: Data of rain fall [6] and water quality of Lam Takong Basin in 2008-2009 were used for compare correlation water qualities between dry (October, December 2008 and February 2009) and rainy season.
Land use type classification: Land use data file of Nakhon Ratchasima province in 2008 [7] and Topographic map (Scale 1: 50,000) were classified land use type in Lam Takong Basin.
Three scenarios (present, 10 years, and 10 years with 25% BOD reduction) were simulated (Figure 4).
We would like to thank the officers of The Pollution Control Department, Regional Environmental Office 11, Nakhon Ratchasima Municipality, the Royal Irrigation Department, and the Thai Meteorology Department for providing basic data.
The seasonal effect on Lam Takong water quality: Data of rain fall [6] and water quality of Lam Takong Basin in 2008-2009 were used for compare correlation water qualities between dry (October, December 2008 and February 2009) and rainy season.
Land use type classification: Land use data file of Nakhon Ratchasima province in 2008 [7] and Topographic map (Scale 1: 50,000) were classified land use type in Lam Takong Basin.
Three scenarios (present, 10 years, and 10 years with 25% BOD reduction) were simulated (Figure 4).
We would like to thank the officers of The Pollution Control Department, Regional Environmental Office 11, Nakhon Ratchasima Municipality, the Royal Irrigation Department, and the Thai Meteorology Department for providing basic data.
Online since: August 2013
Authors: Yuan Jun Zhou, Shi Liang Dong, De Qiang Wang
A popular harmonic current reduction method specifically is to increase the number of rectification pulses such as 18-pulse ATRU.
TABLE.1 HARMONIC DATA OF GRID CURRENT Pulse load’s frequency [kHz] Current harmonic content[%] THD[%] 17th 19th 5 5.26 3.60 19.41 20 4.10 3.34 5.47 50 4.09 3.25 5.39 0 2.64 1.99 3.44 Seen by the data in Tab.1, the 17th and 19th grid current harmonics and THD when the ATRU system drives the pulse load whose frequency is greater than 20kHz is nearly similar to it when ATRU driving resistor load.
TABLE.1 HARMONIC DATA OF GRID CURRENT Pulse load’s frequency [kHz] Current harmonic content[%] THD[%] 17th 19th 5 5.26 3.60 19.41 20 4.10 3.34 5.47 50 4.09 3.25 5.39 0 2.64 1.99 3.44 Seen by the data in Tab.1, the 17th and 19th grid current harmonics and THD when the ATRU system drives the pulse load whose frequency is greater than 20kHz is nearly similar to it when ATRU driving resistor load.
Investigations on Dynamic Puncture Behaviors of Integrated Composite Reinforced with Varying Fabrics
Online since: August 2013
Authors: Ting Ting Li, Jia Horng Lin, Ching Wen Lou, Chia Chang Lin, Jan Yi Lin
The dynamic puncture resistance of multi-layer integrated composite which was comprised of glass fabric reinforcement or Kevlar fabric reinforcement and nonwovens were discussed as related to recycled Kevlar fibers amount, number of layer and K-ply position for purpose of cost reduction and performance improvement.
The dynamic puncture behavior was carried out by a drop-tower machine equipped with PCD300A data acquisition based on NIJ Standard 0115.00.
By AVOVA analysis, this model predicted by Equation (1) is highly related to experimental data, because Prob>F is 0.00182 which is much lower than 0.05 as shown in Table 2.
The dynamic puncture behavior was carried out by a drop-tower machine equipped with PCD300A data acquisition based on NIJ Standard 0115.00.
By AVOVA analysis, this model predicted by Equation (1) is highly related to experimental data, because Prob>F is 0.00182 which is much lower than 0.05 as shown in Table 2.
Online since: December 2013
Authors: Jiang Zeng, Chang Ming Chen, Xiang Hua Zhang
School of Electric Power, South China University of Technology, Guangzhou 510640, Guangdong Province, China
accm19880618@gmail.com, bzengxy@scut.edu.cn, c596605630@qq.com
Key words: PSO, least square method, substation service power, load modeling
Abstract:EHV substation service power is an important load in the power grid which is meaningful to be examined for the energy saving and emission reduction of the power grid.
Once the projects are completed, the meaning of original historical data will be decreased that it will the increase the difficulty of formulating the assessing value.
According to the data for Feb 2011 to Dec 2012, the correlation coefficient of substation service power with each factor is shown as the Tab. 1.
In practical situations, due to the existence of random data in the influencing factors, it will be in minimal possibility that the independent variable matrix will not be full rank.
The fitting formula is as Eq. 1: (1) Through the process above, the fitting formula can be established for each substation as Eq. 2: (2) In the Eq. 2, are the data of service power of substations are the independent variable matrix which contain electricity transmission quantity, average maximum temperature of each day in each month, maximum temperature of each month, average minimum temperature of each day in each month, minimum temperature of each month, the number of 500kV intervals, the number of main transformers, the total capacity of the main transformers, longitude, latitude, the number of SVC, the number of high-voltage reactors of each substation and the constant column.
Once the projects are completed, the meaning of original historical data will be decreased that it will the increase the difficulty of formulating the assessing value.
According to the data for Feb 2011 to Dec 2012, the correlation coefficient of substation service power with each factor is shown as the Tab. 1.
In practical situations, due to the existence of random data in the influencing factors, it will be in minimal possibility that the independent variable matrix will not be full rank.
The fitting formula is as Eq. 1: (1) Through the process above, the fitting formula can be established for each substation as Eq. 2: (2) In the Eq. 2, are the data of service power of substations are the independent variable matrix which contain electricity transmission quantity, average maximum temperature of each day in each month, maximum temperature of each month, average minimum temperature of each day in each month, minimum temperature of each month, the number of 500kV intervals, the number of main transformers, the total capacity of the main transformers, longitude, latitude, the number of SVC, the number of high-voltage reactors of each substation and the constant column.