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Online since: November 2012
Authors: Manuel de Freitas, Bin Li, Luís G. Reis, Vitor Anes
Furthermore, the sequential effect and damage accumulation have also been studied with experimental data [6-9].
Moreover, adding the loading case 3 to the comparison, the results indicate a reduction in fatigue life.
This reduction results from the axial full reversion present in the loading path, leading to conclude that the sequential effect results mainly from the axial component of the loading.
For the loading cases 3, 3.1 and 3.2 the critical plane is at 0º which is coherent with the loading paths, but for the case 3.3A, where the shear component is half reduced, the F-S model indicates critical planes at ±45º which is different from the obtained experimental data.
The obtained data clearly show that the axial/torsion sequence and the stress ratio have a strong influence in the 42CrMo4 fatigue strength.
Online since: June 2012
Authors: Yu Liang Liu, Hui Wu Yu, Lin Guang Zhang, Li Yan
The micro-structures and deformation texture of Ti-Nb-Ta-Zr alloy during rolling deformation were studied to provide experimental data for the application of the alloy in this paper.
In this study, the original state specimen before rolling as standard sample, the crystal surface density parameters can be measured by the crystal face diffraction intensity data
Axis density data indicates that no significant texture is formed on the sample after deformation of 40%.
High density of dislocations and a small amount of twins are on the local grains of the sample with 40% rolling reduction.
High-density dislocation cells formed the sub-grain block on the samples with rolling reduction of 92%. 3. {100} plate texture gradually formed during rolling deformation process.
Online since: October 2014
Authors: Wacław Banaś, Aleksander Gwiazda, Agnieszka Sękala, Zbigniew Monica
The database collects information about the process and the resources [14, 15], while agents are able to receive and analyze the data and influence on the environment in such a way as the selection of appropriate materials or components.
Moreover the approach of multi-agent systems opens great opportunities associated with the implementation of these systems in the design process through direct exchange of data and information between the components of the proposed system [comp. 12,24].
Dzitkowski, Passive reduction of system vibrations to the desired amplitude value, Journal of Vibroengineering. 15/3 (2013) 1254-1264
Dzitkowski, Active synthesis of discrete systems as a tool for reduction vibration, Solid State Phenomena. 198 (2013) 427-432
Methods of manufacturing data acquisition for production management – a review.
Online since: January 2015
Authors: Chun Tan, Wei Sui, Shuang Xu, Zhong Fu Liu, Yan Ping Li, Dong He Ma, Zhi Fa Ma
Currently, there are mainly two ways to select the shear strength parameters of weak interlayer, first is engineering analogy method, commonly used for the planning of small and medium projects or major projects under feasibility study stage trial data insufficient; Second is test values reduction, mainly for large projects.
In the process of parameter selection, specific to what kind of test is standard, using how much of the reduction factor, scholars view is inconsistent.
(2) The distribution of weak interlayer A large number of exploration data prove, Datengxia dam bedrock weak interlayer is very developed.
Field data statistic results show that: Datengxia dam foundation weak interlayer density, thickness, extended and complex situation.
Online since: December 2013
Authors: Fei Fei Tan, Zhao Hua Lu
The data of energy consumption and population statistics will be used to calculate the annual consumption per capita for the energy items, with the coal species, petroleum, natural gas and electricity considered.
In the light of availability of statistical data, some modifications will be added in the calculate process, as described next.
It is clearly perceived that the ecocapacity had little variation during the study period from the integration of the data of energy footprint per capita in table 1 and energy deficit in figure 1.Meanwhile, the energy deficit in 2010 was 1.87 times as large as the one in 2001, demonstrating that the energy demand had been considerably larger than ecocapacity in the natural ecosystems of Jing-Jin-Ji region.
The Jing-Jin-Ji region had responded to a nation called on to strength energy saving and generalize new techniques to implement energy saving and emission reduction, which is also deemed to agree to the actuality.
In the “eleventh five-year plan” period, the policy of energy saving and emission reduction was proposed and brought into performance evaluation system of the leading cadres gradually, therefore the most progress might be brought from the vigorously promotion of the policy and law-enforcing supervision in the aspect.
Online since: September 2014
Authors: Rita Sundari, Amy Wahida Mohamad Sa'adan
The general redox reaction can be described as follows: Red → Ox + e- (reduction) Ox + e- → Red (oxidation) The respective anodic current (Ia) and cathodic current (Ic) for the respective oxidation reduction are described in Eq. 5 and Eq.6, respectively
A GPES software was used to perform the Tafel plot provided with the data of corrosion potential (Ecorr), corrosion current (icorr), anodic (ba) and cathodic (ca) slopes.
Thermodynamic data of carbon steel corrosion in soil solution (30oC – 90oC) in a day.
Tafel Plot data in terms of corrosion current (icorr), potential current (-Ecorr), anodic slope (ba) and cathodic slope (bc).
Online since: December 2012
Authors: Arash Tahmasebi, Jiang Long Yu, Huan Zhao, Pei Hong Wang
Achieving NOx emission reduction target does not necessarily mean poor boiler performance.
The boiler operated in a wide range, and the measured NOx emissions and operational parameters provided a rich enough data set for developing empirical models.
The training and testing data for KPCA--SVR model were 279 cases, which were in advance indexed by the Arabic numeral, i.e., n=1,2,3,…,279.
The optimized parameters of three KPCA--SVR models were listed in table 2.Once the optimal parameters were determined, the KPCA--SVR models were trained using the training data, and then the well-trained models can be employed to predict the testing cases.
Chong, et.al., “A comparison of PCA, KPCA and ICA for dimensionality reduction in support vector machine,” Neurocomputing, vol. 55, pp. 321-336, 2003
Online since: August 2015
Authors: M.N.M. Hussain, Ahmad Maliki Omar, Intan Rahayu Ibrahim, Kamarulazhar Daud
Introduction Downward trend in cost of renewable energy influences the interest of renewable energy system to be promptly implemented for global reduction of greenhouse gas emission in worldwide.
System Identification Approach System identification is one of the intelligent control approaches using statistical methods to build mathematical models of dynamical systems from measured or empirical data.
This system effectively generates informative data for fitting the best models to represent real system database.
Basic identification steps involved in the proposed system are; 1) Optimal experiment design and data collection, 2) Model structure selection, 3) Model estimation, and 4) Model validation.
Omar, “A Novel Combination of Direct and Indirect ( CoDId ) Method of MPPT for Power Losses Reduction,” Int.
Online since: April 2014
Authors: Rong Zhen Zhao, Feng Miao
It is shown how a neural network learning rule can be transformed into a fixed-point iteration, which provides an algorithm that is very simple, does not depend on any user-defined parameters, and is fast to converge to the most accurate solution allowed by the data.
The purpose of this paper is to review the application of blind source separation in the machine fault diagnosis,including the following aspects: noise elimination and extraction of the weak signals,the separation of multi-fault sources,redundancy reduction,feature extraction and pattern classification based on independent component analysis.
Online since: May 2017
Authors: Aleksey Lipnitskii, I.V. Nelasov, Anton Boev, Vyacheslav Maksimenko, Valery Saveliev, Andrey Kartamyshev
Potential parameters were optimized to describe the database of DFT data.
POT_TiV predicts the thermal expansion of pure vanadium in a perfect agreement with experimental data [16].
However, we obtained the very good agreement of these calculated values with the experimental data.
Desai, Thermophysical Properties of Matter - the TPRC Data Series.
Hestermans, Thermophysical properties of matter-the tprc data series.
Showing 13201 to 13210 of 40694 items