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Online since: January 2016
Authors: Petr Konvalinka, Jindrich Fornůsek
It was found that the tensile capacity of the headed stud is increasing with the reduction of the resistance area by the support.
The comparison of selected obtained data and the coefficient kdist are presented on the Fig. 9. b a Fig. 9: The selected comparison of the coefficient kdist and the results of analysis.
The comparison of selected obtained data and the coefficient kdist are presented on the Fig. 9. b a Fig. 9: The selected comparison of the coefficient kdist and the results of analysis.
Online since: September 2013
Authors: Shao Jiang Wang, Yong Qiao Wei, Feng Lan Jia, Hua Jun Xiao, Li Hou
Experiment results show that the noise reduction effect of the wavelet packet based on the adjusted threshold is obvious and the SNR of signals is also improved.
The wavelet packet coefficients which are less than or equal to the threshold are set as zero, and just the data which is greater than the threshold is used for rebuilding signal.
The wavelet packet coefficients which are less than or equal to the threshold are set as zero, and just the data which is greater than the threshold is used for rebuilding signal.
Online since: September 2016
Authors: Christopher K.Y. Leung, Geng Ying Li, Ling Shi Meng
However, reduction of mechanical properties due to the introduction of an amorphous structure within the cement composite has limited its application.
Considerable reduction of compressive strength at all ages has been observed by many researchers [10–12].
Pinto, F.C. da Rocha, Synthesis and characterization of epoxy-modified cement slurries-Kinetic data at hardened slurries/HCl interfaces, J.
Considerable reduction of compressive strength at all ages has been observed by many researchers [10–12].
Pinto, F.C. da Rocha, Synthesis and characterization of epoxy-modified cement slurries-Kinetic data at hardened slurries/HCl interfaces, J.
Online since: October 2014
Authors: Gheorghe Brabie, Bogdan Chirita, Elena Costache, Stefan Teaca
Utilization of a blank with optimal shape and dimensions leads to the following benefits: improves the accuracy of the drawn parts and determine the costs reduction due to reduced material consumption and cost, lower number of technologic operations, shorter manufacturing times etc.
Generally, a blank with optimal shape and dimensions leads to the following benefits in the case of drawn parts manufacturing: improves the accuracy of the drawn parts and determine the costs reduction due to reduced material consumption and cost, lower number of technologic operations, shorter manufacturing times etc.
From the analysis of the obtained data it can be observed that the use of a smaller blank diameter conducts to the diminishing of the drawn cylindrical cups wrinkling.
Generally, a blank with optimal shape and dimensions leads to the following benefits in the case of drawn parts manufacturing: improves the accuracy of the drawn parts and determine the costs reduction due to reduced material consumption and cost, lower number of technologic operations, shorter manufacturing times etc.
From the analysis of the obtained data it can be observed that the use of a smaller blank diameter conducts to the diminishing of the drawn cylindrical cups wrinkling.
Online since: July 2014
Authors: Xin Yu Wang, Xi Chao Li, Liang Zhou, Shun Min Wang
The HE (heat exchanger) of automotive exhaust TEG (thermoelectric generator) plays a vital role in converting thermal energy into electrical energy, therefore achieves the goal of energy conservation and emission reduction.
Based on bench test data, the inlet velocity is 21 m/s, the inlet temperature is 340℃, the exhaust gas density is 0.6 kg/m³, and the dynamic viscosity coefficient is 2.96105 Pas.
Based on bench test data, the inlet velocity is 21 m/s, the inlet temperature is 340℃, the exhaust gas density is 0.6 kg/m³, and the dynamic viscosity coefficient is 2.96105 Pas.
Online since: December 2014
Authors: Ran Zhao, Dan Dan Zhou, Chong Jiu Li, Dong Sheng Xia
A modified reaction mechanism was established, and the ability of the reaction scheme was evaluated through comparison with well-defined laboratory data in the literature.
A comparison of the present simulation data with experimental data was shown.
Symbols represent experimental data, solid lines represent the simulation results using the modified mechanism, and dashed lines show the simulations from NIST mechanism for comparison.
Numerical modeling of NOx reduction using pyrolysis products from biomass-based materials.
A comparison of the present simulation data with experimental data was shown.
Symbols represent experimental data, solid lines represent the simulation results using the modified mechanism, and dashed lines show the simulations from NIST mechanism for comparison.
Numerical modeling of NOx reduction using pyrolysis products from biomass-based materials.
Online since: May 2020
Authors: Vladimir V. Vyukhin, O.A. Chikova, Ksenya Yu. Shmakova
Experimental data on the density, the surface tension of Fe-Cu liquid alloys have of independent metrological importance for practical foundry.
Experimental data on the density, the surface tension of the Fe-Cu liquid alloys derived have of independent metrological importance for practical foundry.
No signs of melt evaporation or a reduction in drop volume were observed.
Results of measuring absolute values of surface tension are consistent with literature data for Fe-Cu melts [12–18].
Experimental data on the density, the surface tension of Fe-Cu liquid alloys, derived have of independent metrological importance for practical foundry.
Experimental data on the density, the surface tension of the Fe-Cu liquid alloys derived have of independent metrological importance for practical foundry.
No signs of melt evaporation or a reduction in drop volume were observed.
Results of measuring absolute values of surface tension are consistent with literature data for Fe-Cu melts [12–18].
Experimental data on the density, the surface tension of Fe-Cu liquid alloys, derived have of independent metrological importance for practical foundry.
Online since: July 2011
Authors: Tian Qin Wang, Chang Liu, Jun Yang, Zhu Wang
The followings are the arithmetic procedure of PCA:
(1) standardizing the data of original variables
Since the measurement units of different indicators are various, the original data need to be standardized firstly to eliminate the effects caused by different magnitudes and dimensions.
Supposing there are n samples and P indicators, the data matrix can be obtained, in which means j th index value in the i th sample.
The matrix can be used to standardize data
() (1) in which: () ,() is the data after standardizing
Firstly the original data are standardized to get the relevant matrix; then the characteristic values, their contribution rates and the cumulative contribution rates can be calculated.
Supposing there are n samples and P indicators, the data matrix can be obtained, in which means j th index value in the i th sample.
The matrix can be used to standardize data
() (1) in which: () ,() is the data after standardizing
Firstly the original data are standardized to get the relevant matrix; then the characteristic values, their contribution rates and the cumulative contribution rates can be calculated.
Online since: October 2010
Authors: Shi Lin Yan, Fei Yan, Zhong Qi Qiu
It consists of mould, a constant flow pump, pressure sensors, and data collection system.
Data collection is collecting the value of pressure of inlet and observation points using pressure sensors, the computer stores information, and calculates out the value of pressure.
When fiber performs are put into the mould and the mould is packed well, we connect the mould with pump, pressure sensors, and data collection system, shown in Fig. 1.
(2) Data processing Subsection method.
Data processing by subsection method reaches the values of permeability of different conditions, then compare and analysis the values of permeability.
Data collection is collecting the value of pressure of inlet and observation points using pressure sensors, the computer stores information, and calculates out the value of pressure.
When fiber performs are put into the mould and the mould is packed well, we connect the mould with pump, pressure sensors, and data collection system, shown in Fig. 1.
(2) Data processing Subsection method.
Data processing by subsection method reaches the values of permeability of different conditions, then compare and analysis the values of permeability.