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Online since: September 2014
Authors: Amirreza Yaghoobi, Hamid Baseri, Abdolhamid Gorji, Mohammad Bakhshi-Jooybari
This process composed of two steps: training the model using data generated by finite element simulations and testing the model.
In all, 25 such data sets were used based on L25 orthogonal array. 21 data sets were selected randomly and used for training purposes, while the remaining 4 data sets were presented to the trained network as new application data to verify the predictive accuracy of the network model.
Thus, the network was evaluated using data that had not been used for training.
It can be seen that there is a good agreement between the neural network model predictions and FE simulations for the train and the test data.
Comparison of the predicted and simulated data for (A) training (B) test Optimization of Pressure Path Using Simulated Annealing.
In all, 25 such data sets were used based on L25 orthogonal array. 21 data sets were selected randomly and used for training purposes, while the remaining 4 data sets were presented to the trained network as new application data to verify the predictive accuracy of the network model.
Thus, the network was evaluated using data that had not been used for training.
It can be seen that there is a good agreement between the neural network model predictions and FE simulations for the train and the test data.
Comparison of the predicted and simulated data for (A) training (B) test Optimization of Pressure Path Using Simulated Annealing.
Online since: September 2014
Authors: Vyacheslav Goryany, Johannes Buch, Michael Hinnemann, Christian Zybill, Erich Schubrikoff
The data allow a complete description of the roll behavior in operation.
The sectional method was applied using a stepwise reduction of the roll diameter in combination with monitoring the stress state of the roll (Fig. 1).
From these data, a 3-dimensional distribution of primary residual stress was derived.
After reduction of the maximum load to the permissible range, the rolls worked faultlessly.
The sectional method was applied using a stepwise reduction of the roll diameter in combination with monitoring the stress state of the roll (Fig. 1).
From these data, a 3-dimensional distribution of primary residual stress was derived.
After reduction of the maximum load to the permissible range, the rolls worked faultlessly.
Online since: October 2014
Authors: Xiai Chen, Shuang Ke, Lu Han, Zhi Long Zhou, Qing Hua Zhang
Fig. 1.The composition diagram of THz-TDS host computer function module
(1)The main function of data reading module includes: the host computer reads data from SR810 latch through the GPIB-USB-HS interface card, and the communication format of the data is GPIB
The dimensions of the variables is reduced and the data is packed by using this method.
Using maximum variance principle, principal component analysis stands for the structure of the data on the whole, that is to say, data is reconstituted by a small number of new variables without losing the original basic data information.
Realization procedures of principal component analysis are as follows: (1)Standardize dealing with to the data
(for example ,reduce three-dimensional data into two-dimensional data).By using this dimensionality reduction method ,it is easier for the data observation and data analysis, in the meanwhile ,the lost of the information is not big.
The dimensions of the variables is reduced and the data is packed by using this method.
Using maximum variance principle, principal component analysis stands for the structure of the data on the whole, that is to say, data is reconstituted by a small number of new variables without losing the original basic data information.
Realization procedures of principal component analysis are as follows: (1)Standardize dealing with to the data
(for example ,reduce three-dimensional data into two-dimensional data).By using this dimensionality reduction method ,it is easier for the data observation and data analysis, in the meanwhile ,the lost of the information is not big.
Online since: April 2018
Authors: Ádám Dobosy, Marcell Gáspár, János Lukács
Measured and analysed data about base materials and welded joints were compared and discussed.
During the evaluation the results were compared with each other and with literary data.
Every data comes from the delivery certificates.
Therefore the curves described with the given data in the Table 5, are fatigue design curves.
The high cycle fatigue resistance of the examined W960Q steel is better, than the literature data in the same category.
During the evaluation the results were compared with each other and with literary data.
Every data comes from the delivery certificates.
Therefore the curves described with the given data in the Table 5, are fatigue design curves.
The high cycle fatigue resistance of the examined W960Q steel is better, than the literature data in the same category.
Online since: April 2012
Authors: Guo Lin Duan, Xiao Li Yin, Tao Yao
This paper details the application of optimization techniques to reduce vibration and noise of circular saw blade with slots, the finite element model under the load conditions have been established in Hypermesh software, the vibration of peak ground displacement of modal for frequency response can be optimized to obtain maximum reduction, volume fraction range between 0.1 and 0.3 as constrained condition.
According to the data, we can see that the maximum of peak ground displacement of node 1 before optimization is 1.0649mm.
[4] M.S.Bobeczko, Noise Reduction Achieved With Slotted Blades.
According to the data, we can see that the maximum of peak ground displacement of node 1 before optimization is 1.0649mm.
[4] M.S.Bobeczko, Noise Reduction Achieved With Slotted Blades.
Online since: August 2014
Authors: Zulkifli Mohd Nopiah, Azman Senin, Muhammad Jamhuri Jamaludin, Mohd Azmir Abidin, Muhamad Azuan Zaudin, Muhammad Afzal Ahmad, Ahmad Zakaria
In current work, the experimental mechanical properties and flow curve data for thin galvanized sheet metal were established.
Furthermore, the true prediction of part formability was investigated with established data and standard material database embedded in commercial simulation software.
The typical measures for ductile behavior are the percentage of elongation and the reduction of area for the material specimen.
For uniaxial testing, the following ASTM specifications have outlined important material parameters: (i) ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials outline the determination of the ultimate tensile strength, yield strength, elongation, and reduction of area.
Furthermore, the true prediction of part formability was investigated with established data and standard material database embedded in commercial simulation software.
The typical measures for ductile behavior are the percentage of elongation and the reduction of area for the material specimen.
For uniaxial testing, the following ASTM specifications have outlined important material parameters: (i) ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials outline the determination of the ultimate tensile strength, yield strength, elongation, and reduction of area.
Online since: February 2012
Authors: Gaetano S. Palazzo, Pierpaolo Carlone
- Contour surface measurement and data processing.
A 0.5x0.5 spacing grid has been used for the acquisition of the out of plane displacement, resulting into about 1100 data points for surface.
The acquired data have then been processed using the multiple linear regression algorithm provided by the MATLAB software (Fig 1.g), according to the following polynomial form: z(x,y) = a0 x6 + a1 x5 + a2 x4 + a3 x3 + a4 x2 + a5 x + b0 y + c0 x y + c1 x2 y + c2 x y2 + d
Indeed, at relatively higher V, for each tool position, the reduction of time available for heat conduction, before the beginning of the material cooling, implies a reduction of the heated zone and an increase of thermal gradients.
An anomalous distribution has been found in tests 7-9 (intermediate Ω and kissing bond defect), characterized by a reduction of the tensile peak, localized closer to the top plane and a more evident compression in correspondence of the bottom plane.
A 0.5x0.5 spacing grid has been used for the acquisition of the out of plane displacement, resulting into about 1100 data points for surface.
The acquired data have then been processed using the multiple linear regression algorithm provided by the MATLAB software (Fig 1.g), according to the following polynomial form: z(x,y) = a0 x6 + a1 x5 + a2 x4 + a3 x3 + a4 x2 + a5 x + b0 y + c0 x y + c1 x2 y + c2 x y2 + d
Indeed, at relatively higher V, for each tool position, the reduction of time available for heat conduction, before the beginning of the material cooling, implies a reduction of the heated zone and an increase of thermal gradients.
An anomalous distribution has been found in tests 7-9 (intermediate Ω and kissing bond defect), characterized by a reduction of the tensile peak, localized closer to the top plane and a more evident compression in correspondence of the bottom plane.
Online since: March 2011
Authors: Karl Kuzman, Aleš Petek, Renato Fijavž
It is a technique used for the modelling and analysis of numerical data consisting of values of a dependent variable (response variable) and of one or more independent variables (explanatory variables).
The design of the experiments requires selecting the levels of input data so that the regressor matrix is fully determined, and that the matrix ensures the conditions of orthogonality, rotatability and symmetry [9].
The deterministic coefficient R2 of multiple determinations estimates the fraction of total variation in the data accounted by the model [9].
The decrease of any of those parameters influences the reduction of neck wall thickness.
It decreases along the axial direction and reaches maximum reduction at the top of expanded hole.
The design of the experiments requires selecting the levels of input data so that the regressor matrix is fully determined, and that the matrix ensures the conditions of orthogonality, rotatability and symmetry [9].
The deterministic coefficient R2 of multiple determinations estimates the fraction of total variation in the data accounted by the model [9].
The decrease of any of those parameters influences the reduction of neck wall thickness.
It decreases along the axial direction and reaches maximum reduction at the top of expanded hole.
Online since: June 2014
Authors: Zamir A. Zulkefli, Abdul Hakim Abdullah
Methodology
The data collection for the study was carried between December 2007 and May 2008.
The modulation reduction factor is calculated at each octave bands of 250 Hz, 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz.
Data shows that Masjid Jamek meets the suggested guideline for background noise when the fans are not operating but does not meet the guideline when the fans are operating.
The RT60 values for Masjid Jamek were significantly lower and also show an overall reduction as the number of occupants increase.
It must be noted that this guideline is based on the data from only two specific mosques in Malaysia, limiting the accuracy of any generalization thereof.
The modulation reduction factor is calculated at each octave bands of 250 Hz, 500 Hz, 1000 Hz, 2000 Hz and 4000 Hz.
Data shows that Masjid Jamek meets the suggested guideline for background noise when the fans are not operating but does not meet the guideline when the fans are operating.
The RT60 values for Masjid Jamek were significantly lower and also show an overall reduction as the number of occupants increase.
It must be noted that this guideline is based on the data from only two specific mosques in Malaysia, limiting the accuracy of any generalization thereof.
Online since: June 2011
Authors: Amir Mahmoudi, Khalil Monfaredi, Hassan Faraji Baghtash, Ali Bahrami
This data is used to compute the real time instantaneous power consumption by multiplying this current with the measured supply voltage.
According to this figure, it can be seen that the reduction of the brightness by 50% while the MP3 player is running, decrease the average power consumption by almost 40 percent.
By some reduction in brightness, more battery life time can be provided for the users when there is no access to electricity sources.
Battery life time reduction for different experimental series Further Works This work could be done on different models of laptops and PCs, in different circumstances, such as running different programs individually or in parallel, which could be performed in different frequencies while considering external peripherals consumption at the same time.
His current research interests include current mode integrated circuit design, low voltage, low power circuit and systems and analog microelectronics and data converters.
According to this figure, it can be seen that the reduction of the brightness by 50% while the MP3 player is running, decrease the average power consumption by almost 40 percent.
By some reduction in brightness, more battery life time can be provided for the users when there is no access to electricity sources.
Battery life time reduction for different experimental series Further Works This work could be done on different models of laptops and PCs, in different circumstances, such as running different programs individually or in parallel, which could be performed in different frequencies while considering external peripherals consumption at the same time.
His current research interests include current mode integrated circuit design, low voltage, low power circuit and systems and analog microelectronics and data converters.