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Online since: January 2010
Authors: M. Law, Mark D. Callaghan, S.R. Humphries, Hui Jun Li, Wing Y. Yeung
No data
or fatigue property characterisation has been obtained by miniature fatigue specimens, or to
determine a comparison of miniature and standard-sized specimens for P22 steel at elevated
temperatures.
Comparisons in the fatigue properties with data generated by standard-sized specimens in previous literature are examined.
The methodology facilitated in consistent and comparable fatigue data that was observed in standard-sized specimens in previous literature.
The authors would like to thank Mark Ho for guidance in the design of Fortran data analysis software written for this investigation.
[5] Data Sheets on Elevated-Temperature, Time-Dependent Low-Cycle Fatigue Properties of SCMV 4 (2.25Cr-1Mo) Steel Plate for Pressure Vessels (No.62).
Comparisons in the fatigue properties with data generated by standard-sized specimens in previous literature are examined.
The methodology facilitated in consistent and comparable fatigue data that was observed in standard-sized specimens in previous literature.
The authors would like to thank Mark Ho for guidance in the design of Fortran data analysis software written for this investigation.
[5] Data Sheets on Elevated-Temperature, Time-Dependent Low-Cycle Fatigue Properties of SCMV 4 (2.25Cr-1Mo) Steel Plate for Pressure Vessels (No.62).
Online since: December 2012
Authors: Xin Liu, Wei Fan
Through the tensile test get low carbon steel material Q345 stress strain curve, engineering stress strain data need to convert to true stress and strain data.
Table 1 shows the low carbon steel Q345 true stress and strain value through the data sorting, again after calculation.
In the analysis of finite element simulation software ADINA, input Q345 plastic parameters, table 1 number 1 item value must be 0, in turn in software elastoplastic analysis module input form other stress strain measurement value, use these data to describe the actual material behavior.
Table 1 Low carbon steel material Q345 stress strain data Cutting Contact Friction Characteristics.
The grid division using 8 node hexahedron thermal coupling linear reduction integral unit C3D8RT, and enhance the hourglass to control.
Table 1 shows the low carbon steel Q345 true stress and strain value through the data sorting, again after calculation.
In the analysis of finite element simulation software ADINA, input Q345 plastic parameters, table 1 number 1 item value must be 0, in turn in software elastoplastic analysis module input form other stress strain measurement value, use these data to describe the actual material behavior.
Table 1 Low carbon steel material Q345 stress strain data Cutting Contact Friction Characteristics.
The grid division using 8 node hexahedron thermal coupling linear reduction integral unit C3D8RT, and enhance the hourglass to control.
Online since: March 2012
Authors: Tai Hu Wu, Feng Chen, Zi Jian Yang
The portable photoelectric apparatus for the colloidal gold test on CL has functions for detection, timing, data storage and query capabilities.
The signal data are collected by an optical structure.
The image that is displayed using the linear grayscale CCD with less data, a fast transmission speed, increased single pixel sensitive and rapid detection meets this demand.
Homogeneous background light aids in finding the correct signal data.
When the angle is too large, the luminosity of the strip will decrease, which causes a reduction of the field-of-view brightness.
The signal data are collected by an optical structure.
The image that is displayed using the linear grayscale CCD with less data, a fast transmission speed, increased single pixel sensitive and rapid detection meets this demand.
Homogeneous background light aids in finding the correct signal data.
When the angle is too large, the luminosity of the strip will decrease, which causes a reduction of the field-of-view brightness.
Online since: September 2013
Authors: Fan Tang, Yu Hong Wang, Dong Xiang Li, Guo Liang Su
In this way, the internal fast transient changing process of the FACTS and HVDC can be simulated in detail, without the need of mass equivalent reduction, and therefore the accuracy of the simulation analysis is greatly improved [1-3].
In simulation process, data and results of the two parts interact in real-time via interface.
Electromechanical Transient Model The electromechanical simulation uses winter base model data of state grid in 2009.
In this case, the 7.1 version of PSASP is used in the electromechanical simulation, and 6.2x version data of the North China and Central China power grids in 2009 is converted to 7.1 version data.
Through comparatively analyzing the electrical quantity waveform of inverter DC current and voltage, inverter firing and extinction angle, and rectifier firing angle, it can be concluded: the quasi-steady-state equation is applied in pure electromechanical transient simulation program to describe the DC system, so that the transient process during the fault cannot be reflected minutely; the simulation curve of pure electromagnetic transient program can accurately reflect the DC system dynamic in the fault transient process, but reflecting the AC system inadequately; due to the presence of data interaction between electromagnetic and electromechanical transient subnets in electromagnetic-electromechanical transient hybrid simulation, the operation result is more accurate, and the simulation curve is the most closest to the actual working conditions.
In simulation process, data and results of the two parts interact in real-time via interface.
Electromechanical Transient Model The electromechanical simulation uses winter base model data of state grid in 2009.
In this case, the 7.1 version of PSASP is used in the electromechanical simulation, and 6.2x version data of the North China and Central China power grids in 2009 is converted to 7.1 version data.
Through comparatively analyzing the electrical quantity waveform of inverter DC current and voltage, inverter firing and extinction angle, and rectifier firing angle, it can be concluded: the quasi-steady-state equation is applied in pure electromechanical transient simulation program to describe the DC system, so that the transient process during the fault cannot be reflected minutely; the simulation curve of pure electromagnetic transient program can accurately reflect the DC system dynamic in the fault transient process, but reflecting the AC system inadequately; due to the presence of data interaction between electromagnetic and electromechanical transient subnets in electromagnetic-electromechanical transient hybrid simulation, the operation result is more accurate, and the simulation curve is the most closest to the actual working conditions.
Online since: April 2013
Authors: Chung Yi Chung, Wen Liang Lai, Shao Wei Liao, Hwa Sheng Gau, Shih Chieh Chen
Water-quality data reveals that at many monitoring points along the Kaoping River and the Tungkang River, water quality is poor [2] due to the sinking of sediment.
For this study, data were analyzed using canonical discriminant analysis (CDA) approaches.
Thus, a 39×21 data matrix was generated.
The quality of the analytical data was ensured by careful standardization, procedural blank measurements and triplicate samples.
These plots indicate outliers in the data and may be used to assign a new observation to an existing group.
For this study, data were analyzed using canonical discriminant analysis (CDA) approaches.
Thus, a 39×21 data matrix was generated.
The quality of the analytical data was ensured by careful standardization, procedural blank measurements and triplicate samples.
These plots indicate outliers in the data and may be used to assign a new observation to an existing group.
Online since: April 2013
Authors: Jun Hao Geng, Xi Tian Tian, Xiang Wei Liu
So, how to implement intuitive disassembly and assembly simulation, clear 3D technical requirement annotation, and portable 3D job card file is the key to meet above requirements.
3D MRO job card publishing and application process
The adoption of model based definition (MBD) technology provides accurate data source for MRO job card publishing through adding design and manufacturing information for aircraft 3D model.
After MRO technician accepts the product to be repaired and its 3D model, The MRO technician must plane the aircraft disassembly and assembly process in 3D virtual environment to ensure the MRO process is accurate and validate and prepare the 3D data for MRO job card.
Fig. 3. 3D MRO technical requirement annotation based on multi-view Generation of 3D job card with lightweight model. 3D model has some disadvantages like large data size and low security if it is used directly in 3D MRO job card.
The 3D MRO job card data model is shown as following Fig. 4.
Lightweight 3D MRO Job Card Data Model Instance and Conclusion Relative to other lightweight model formats, U3D format has several strongpoint, such as open specification, good reduction ratio and convenient for publishing.
After MRO technician accepts the product to be repaired and its 3D model, The MRO technician must plane the aircraft disassembly and assembly process in 3D virtual environment to ensure the MRO process is accurate and validate and prepare the 3D data for MRO job card.
Fig. 3. 3D MRO technical requirement annotation based on multi-view Generation of 3D job card with lightweight model. 3D model has some disadvantages like large data size and low security if it is used directly in 3D MRO job card.
The 3D MRO job card data model is shown as following Fig. 4.
Lightweight 3D MRO Job Card Data Model Instance and Conclusion Relative to other lightweight model formats, U3D format has several strongpoint, such as open specification, good reduction ratio and convenient for publishing.
Online since: September 2011
Authors: Nadhir Al-Ansari, Sven Knutsson, Jia Qi
Figure 1 Location of Malmberget mine, Sweden
a b
Figure 2a: The open pit in Malmberget (From LKAB), b: an excavator filling the pit
Data from 26 measuring stations were used in this research (figure 4).
The systematic data recording started since 2001 despite the fact that nonsystematic data is available prerior this date.
In this research the data recorded during the period August 2006 till July 2010 were used.
It can quickly and easily converts data into many types of outstanding contour, 3D surface, 3D wire frame, vector, image, shaded relief, and post maps.
Control techniques for fugitive dust generally include watering, chemical stabilization, or reduction of surface wind speed with windbreakers or source enclosures.
The systematic data recording started since 2001 despite the fact that nonsystematic data is available prerior this date.
In this research the data recorded during the period August 2006 till July 2010 were used.
It can quickly and easily converts data into many types of outstanding contour, 3D surface, 3D wire frame, vector, image, shaded relief, and post maps.
Control techniques for fugitive dust generally include watering, chemical stabilization, or reduction of surface wind speed with windbreakers or source enclosures.
Online since: June 2014
Authors: Jian Long Li, Chen Sun
Adaptive Square-root Cubature Kalman Filter
The state equation and the measurement equation for AUV navigation allow a straightforward implementation of data fusion with sequential filters.
The reduction in computational complexity is likely to arise.
Experimental Results This section is composed of two examples of the experimental data processing with the application of the AMSCKF.
The data were measured by an AUV named as “Dolphin-1” at lake tests.
The data from two AUV runs are employed as two examples to demonstrate the performance of the AMSCKF.
The reduction in computational complexity is likely to arise.
Experimental Results This section is composed of two examples of the experimental data processing with the application of the AMSCKF.
The data were measured by an AUV named as “Dolphin-1” at lake tests.
The data from two AUV runs are employed as two examples to demonstrate the performance of the AMSCKF.
Online since: December 2012
Authors: Shou Biao Tan, Min Liu, Xiu Long Wu, Qi Long Liu
In this field, high performance SRAMs are essential to reduce data processing time.
This 2-stage pipelining SRAM can read data continually in the pipelining way which can improve the read performance twice theoretically ,but writing data is still in the conventional rate.
If it is the read operation, which corresponds to the situation that WE =“0”, the corresponding data is read from Q<7:0>, and meanwhile the values of D<7:0> is invalid.
However, if it is the write operation, which corresponds to the situation that WE =“1”, the data from D<7:0> is written into the corresponding bitcells accessed and the value of Q<7:0> hold their previous values.
Using clock gating technique for energy reduction in portable computers. in Computer and Communication Engineering, 2008.
This 2-stage pipelining SRAM can read data continually in the pipelining way which can improve the read performance twice theoretically ,but writing data is still in the conventional rate.
If it is the read operation, which corresponds to the situation that WE =“0”, the corresponding data is read from Q<7:0>, and meanwhile the values of D<7:0> is invalid.
However, if it is the write operation, which corresponds to the situation that WE =“1”, the data from D<7:0> is written into the corresponding bitcells accessed and the value of Q<7:0> hold their previous values.
Using clock gating technique for energy reduction in portable computers. in Computer and Communication Engineering, 2008.
Online since: December 2010
Authors: Chun Guang Zhou, Yuan Tian, Gui Xia Liu
RP was described using two datasets, so we model data as:
(1)
where the Dig is the ith dataset of the gth gene.
GPR uses two datasets (D1, D2) to analyze the microarray data as RPM.
For the analysis by RPM and GRP, all data were subjected to quantile normalization [9].
Li: Dentification of differential gene expression for microarray data using recursive random forest.
Bolstad, R.A.Irizarry, M.Astrand, T.P.Speed: A Comparison of Normalization Methods for High Density Oligonucleotide Array Data Based on Variance and Bias.
GPR uses two datasets (D1, D2) to analyze the microarray data as RPM.
For the analysis by RPM and GRP, all data were subjected to quantile normalization [9].
Li: Dentification of differential gene expression for microarray data using recursive random forest.
Bolstad, R.A.Irizarry, M.Astrand, T.P.Speed: A Comparison of Normalization Methods for High Density Oligonucleotide Array Data Based on Variance and Bias.