Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: September 2013
Authors: Prakob Surawattanawan, Surasit Polpun
The block diagram reduction is shown in Fig. 4.
Fig. 4 Block diagram reduction Physically, the input-output relationship of the HVAC system is given by
Fig. 6 Diagram of experimental apparatus Data measured by all sensors has been transferred to a data logger system.
In this report, only temperature sensors were used to collect the data because the objective is focus at parameter identification.
To determine the value of parameters UAch and Mc, unit-step response of first-order system is applied by comparing the experimental data with the mathematical model results from MATLAB/Simulink simulation.
Fig. 4 Block diagram reduction Physically, the input-output relationship of the HVAC system is given by
Fig. 6 Diagram of experimental apparatus Data measured by all sensors has been transferred to a data logger system.
In this report, only temperature sensors were used to collect the data because the objective is focus at parameter identification.
To determine the value of parameters UAch and Mc, unit-step response of first-order system is applied by comparing the experimental data with the mathematical model results from MATLAB/Simulink simulation.
Online since: August 2019
Authors: K. Thirunavukkarasu, K.R. Thangadurai, R. Gopal
He has found that the electrode undergone single pass equal channel angular pressing process facilitates the reduction of tool erosion, surface crack formation and dimensional accuracy [9].
They have found that the rate of machining was not much affected, but considerable reduction in tool erosion and roughness [11].
The data was interpreted in design expert software for analysis of variance to find the significant terms.
The error percentage is less than 5% between predicted and actual data.
· From confirmation test data, ECAP processed copper electrode reduces the rate of tool erosion and surface coarseness by around 10.2% and 26.6% respectively and the ROM also decreased by 27.6%
They have found that the rate of machining was not much affected, but considerable reduction in tool erosion and roughness [11].
The data was interpreted in design expert software for analysis of variance to find the significant terms.
The error percentage is less than 5% between predicted and actual data.
· From confirmation test data, ECAP processed copper electrode reduces the rate of tool erosion and surface coarseness by around 10.2% and 26.6% respectively and the ROM also decreased by 27.6%
Online since: August 2005
Authors: Yuri Mikhailovich Baron, Jung Il Park, S.L. Ko
And the reduction of the amount of the powder because of its dispersion.
Initial productivity and tool life of the powders with different graininess powders has not provided data on the powders' magnetic and mechanical characteristics, due to which we cannot confirm our assumptions of the figures.
The data for the powders with different abrasive particle sizes and different composite grain arrangements were averaged to obtain more authentic results.
The reduction of the grain size υ results in the decrease of the cutting ability of the powder Fe-TiC and the increase of its tool life.
The reliability of the measured data with a laser sensor has been discussed in a previous work [6].
Initial productivity and tool life of the powders with different graininess powders has not provided data on the powders' magnetic and mechanical characteristics, due to which we cannot confirm our assumptions of the figures.
The data for the powders with different abrasive particle sizes and different composite grain arrangements were averaged to obtain more authentic results.
The reduction of the grain size υ results in the decrease of the cutting ability of the powder Fe-TiC and the increase of its tool life.
The reliability of the measured data with a laser sensor has been discussed in a previous work [6].
Online since: October 2006
Authors: Hyung Pil Park, Byung Ohk Rhee, Baeg Soon Cha
As shown in Fig. 3, the data acquisition begins by the screw
advancing signal from injection molding machine controller, and ends by the mold-open signal.
The signals generated by the machine controller are transmitted to a Priamus Multi DAQ device that controls data acquisition and generation of a switch-over signal.
The acquired pressure and temperature data are transmitted to a computer via RS-232C communication.
Fig. 4 Short-shot experiment and CAE analysis of the family-mold product using ABS (a) 100% (b) 56.9% (c) 49.3% Fig. 5 Pressure profiles according to reduction of cross-sectional area of runner CAE Analysis and results.
Material property data for ABS-HI-121H from LG chemical Co. was supplied by Moldflow.
The signals generated by the machine controller are transmitted to a Priamus Multi DAQ device that controls data acquisition and generation of a switch-over signal.
The acquired pressure and temperature data are transmitted to a computer via RS-232C communication.
Fig. 4 Short-shot experiment and CAE analysis of the family-mold product using ABS (a) 100% (b) 56.9% (c) 49.3% Fig. 5 Pressure profiles according to reduction of cross-sectional area of runner CAE Analysis and results.
Material property data for ABS-HI-121H from LG chemical Co. was supplied by Moldflow.
Online since: July 2020
Authors: Gregor Pobegen, Judith Berens, Tibor Grasser
To validate our conclusions, we added data of MOSFETs which
received N2 POA (t1, T1).
The measured data are compared to theoretical FN curves calculated with the textbook formula [10] J = q2E2ox 16π2¯hΦoxexp (−4 √2m∗(qΦox)3/2 3¯hEox ) (1) where q is the elementary charge, Eox the oxide electric field, Φox the barrier height (expected to be 2.7-2.8 eV for SiC/SiO2[1]), m∗ the effective electron mass (0.39 times the electron mass [12]) and ¯h the reduced Planck constant.
Region III (7-8MV /cm) shows a reduction of the slope of the gate current.
Even if considering an influence of fixed oxide charges by parallel shifting of the ideal FN curve along the x-axis, fitting of the measurement data is not possible.
It would be theoretically possible to fit the measured data to PFE with a certain error, however, the plausibility cannot be checked because the optical dielectric constants for this process is unknown.
The measured data are compared to theoretical FN curves calculated with the textbook formula [10] J = q2E2ox 16π2¯hΦoxexp (−4 √2m∗(qΦox)3/2 3¯hEox ) (1) where q is the elementary charge, Eox the oxide electric field, Φox the barrier height (expected to be 2.7-2.8 eV for SiC/SiO2[1]), m∗ the effective electron mass (0.39 times the electron mass [12]) and ¯h the reduced Planck constant.
Region III (7-8MV /cm) shows a reduction of the slope of the gate current.
Even if considering an influence of fixed oxide charges by parallel shifting of the ideal FN curve along the x-axis, fitting of the measurement data is not possible.
It would be theoretically possible to fit the measured data to PFE with a certain error, however, the plausibility cannot be checked because the optical dielectric constants for this process is unknown.
Risk Management of Induced Micro-Seismicity Caused by Hydraulic Fracturing through Acoustic Emission
Online since: August 2013
Authors: Chao Yin Feng, Yuan Feng
Data show that shale gas resources in China are more than U.S. [2].
To get a substantial data, the reservoir geological condition, operation methods, and image process are collected and tackled seriously, which left abundant materials for further research.
To evaluate the engineering risk, the AE data will be analyzed to locate and image the fracture density and orientation.
Risk avoidance and reduction.
For example, based on pre-existing drilling wells AE data, the subsequent rock motion can be predicted through artificial intellegence software.
To get a substantial data, the reservoir geological condition, operation methods, and image process are collected and tackled seriously, which left abundant materials for further research.
To evaluate the engineering risk, the AE data will be analyzed to locate and image the fracture density and orientation.
Risk avoidance and reduction.
For example, based on pre-existing drilling wells AE data, the subsequent rock motion can be predicted through artificial intellegence software.
Online since: October 2011
Authors: Wei Shan, Hua Jiang
(3)
Fig. 5 Curve of internal friction angle changes with water content
Fig. 6 Curve of safety factor changes with water content
Fig. 4 Curve of cohesion changes with water content
The rupture surface soil water content is 29.8% and saturation is 0.929 during surveying, the slope safety factor is 1.21, the landslide total deformation cloud map after strength reduction is shown in Fig. 7.
Fig. 7 Landslide total deformation cloud map after strength reduction Monitoring data analysis The regional survey and monitoring equipment embedding work was completed in 2010 July, and began to collect monitoring data in July 22, 2010, found that ZK1 and ZK2 deformation monitoring pipe were sheared respectively in the depth of 6.5m and 4.2m under the ground, the sensor connections were also sheared, accordingly, judged the landslide had occurred sliding.
Employed GPS to monitor the tube nozzle moving data, curve of nozzle moving distance changes with time is shown in Fig. 8a; at the same time, collected the monitoring data of ZK3 which is in the junction of new and old road and without damage, the curve of ZK3 pore water pressure and ground temperature changes with time are shown in Fig. 8b and Fig. 8c.
Fig. 7 Landslide total deformation cloud map after strength reduction Monitoring data analysis The regional survey and monitoring equipment embedding work was completed in 2010 July, and began to collect monitoring data in July 22, 2010, found that ZK1 and ZK2 deformation monitoring pipe were sheared respectively in the depth of 6.5m and 4.2m under the ground, the sensor connections were also sheared, accordingly, judged the landslide had occurred sliding.
Employed GPS to monitor the tube nozzle moving data, curve of nozzle moving distance changes with time is shown in Fig. 8a; at the same time, collected the monitoring data of ZK3 which is in the junction of new and old road and without damage, the curve of ZK3 pore water pressure and ground temperature changes with time are shown in Fig. 8b and Fig. 8c.
Online since: December 2012
Authors: Shang Ping Zhong, Kai Zhi Chen, Feng Ying He
Its purpose is to look for the projection direction that most represents the original data under the minimum mean square sense, then extract the main characteristics and reduce data redundancy.
To get the goal of feature reduction, linear transformation has turned sample data from high dimension space to the low.
Unlike other dimension reduction algorithms, [11] pointed out that, under the condition of removing the second-order correlation of the image, PCA has the characteristics of making the reconstructed image with a smaller variance and higher peak signal noise ratio compared with the original image.
Data hiding domain classification for blind image steganalysis[C]// Lee D T.Proceedings of 2004 IEEE International Conference on Multimedia and Expo. 2004,1(3):907-910
To get the goal of feature reduction, linear transformation has turned sample data from high dimension space to the low.
Unlike other dimension reduction algorithms, [11] pointed out that, under the condition of removing the second-order correlation of the image, PCA has the characteristics of making the reconstructed image with a smaller variance and higher peak signal noise ratio compared with the original image.
Data hiding domain classification for blind image steganalysis[C]// Lee D T.Proceedings of 2004 IEEE International Conference on Multimedia and Expo. 2004,1(3):907-910
Online since: February 2012
Authors: Bernd Griesbach, Christian Hezler, Joachim Hecht, Marion Merklein
A reduction of the sheet thickness by increasing material strength accomplishes an important contribution to weight reduction and meet requirements of consequent lightweight design.
These data can give some information about the strain limit under the specific load combination and can be compared with the simulations’ results in addition.
HC450X, 1.0 mm HC450X, 1.0 mm Fig. 3: Force-Displacement path with ARAMIS-camera images Fig. 4: Deformation diagram with experimental and simulative determined data Simulation In a second step, the stretch-bending-test is modelled within the forming simulation to be compared with the experimental results.
Afterwards, the data is plotted on the major vs. minor strain diagram.
Since these attributes are sufficiently accurate, the input data can be considered as correct for the simulation.
These data can give some information about the strain limit under the specific load combination and can be compared with the simulations’ results in addition.
HC450X, 1.0 mm HC450X, 1.0 mm Fig. 3: Force-Displacement path with ARAMIS-camera images Fig. 4: Deformation diagram with experimental and simulative determined data Simulation In a second step, the stretch-bending-test is modelled within the forming simulation to be compared with the experimental results.
Afterwards, the data is plotted on the major vs. minor strain diagram.
Since these attributes are sufficiently accurate, the input data can be considered as correct for the simulation.
Online since: February 2012
Authors: Tina Hausöl, Christian W. Schmidt, Verena Maier, Wolfgang Böhm, Hung Nguyen, Heinz Werner Höppel, Mathias Göken, Marion Merklein
In one ARB cycle two sheets are wire brushed, stacked on top of each other and roll bonded at a thickness reduction of 50 % whereby the process can be repeated several times.
Data from [14].
Data from [14].
Data from [8, 9].
Data from [9].
Data from [14].
Data from [14].
Data from [8, 9].
Data from [9].