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Online since: March 2007
Authors: Pablo Rodriguez-Calvillo, Yvan Houbaert, Tanya Ros-Yáñez, R. Colas
Raw data of load and displacement were acquired and transformed in the true stress - true strain curves.
Samples of alloys B and D quenched in water after hot rolling were cold rolled in a large series of passes from 1.7mm down to 0.5mm with 72% of total reduction without experiencing edge cracks.
However, the water quenched samples exhibited a higher ductility in cold rolling, while smaller reduction (64%) for alloy D could be achieved in samples air cooled after hot rolling and in some occasions edge cracks appeared.
Total reductions of 70% can be achieved during cold rolling without cracks experiences 9) .
Finishing the hot rolling at temperatures not lower than 900°C and fast cooling rates (> 400 °C/sec) are recommended in order to cold rolled the material without crack problems until reductions of 70% [4].
Online since: September 2017
Authors: V.V. Zimich
A reduction in the attractiveness of the urban image of industrial cities.
But this method has not found wide application because of the significant reduction in the strength of the produced material.
Reduction of hygroscopicity of magnesia construction materials can be achieved by staining them, introducing into the water-repellent, using as a mixing magnesium and iron sulfate [10, 14-16] as well as the use of modifying additives [4, 5, 17, 18].
Researches’ analysis in the industry shows that most of the works had no quality control of the binder, no data on the working concentration of a mixing chloride and magnesium sulfate, information about methods of introducing additives into the binder, as well as the results of the strength of the emerging magnesia stone and its phase composition.
The maximum reduction of the hygroscopicity of chlorine magnesium stone promotes the use additives as a modifier for binder such as iron ore sinter or slag from Nickel production, containing in its composition the cations of bivalent and trivalent iron at the same time.
Online since: March 2011
Authors: Mohd Zaki Nuawi, Shahrum Abdullah, Mahfodzah M. Padzi
All obtained data were analysed using specific software.
These data are analysed to determine yield strength, tensile strength, elongation and reduction in area.
Strain data were collected at frequency, f = 100 Hz [9].
The strain data has been analysedevery 900 seconds (4500cyles/ 90 000 data) using I-kaz method and presented in 3-dimension graphical form.
Analysis been done every 90 000 data due to millions data collected and analysing the whole data will affect the analysis process and the coefficient accuracy.
Online since: January 2014
Authors: Xiang Liu, Bo Fu
In this paper, by taking 12 points from the national GPS control network of Xuxiang Village of Haining City as sample data, a BP neural network using 3-4-2-1 model structure is adopted and a nonlinear coefficient 1.1 is added in the response function.
Description of Samples In this paper, GPS height transformation based ANN is conducted by taking 12 of the total 59 points from the national GPS control network of Xuxiang Village of Haining city, Zhejiang province as sample data.
The sample data is processed into the interval [0,1] and will be reflected to the range of the original data at the end of the training [5].
Conclusions The improved BP neural network is established in this paper to calculate the height anomalies of the 5 points of the test set by taking 12 points of the national GPS control network of Xuxiang Village of Haining City as sample data.
It has a practical significance for the full use of GPS elevation information and the reduction of leveling field work.
Online since: February 2019
Authors: Vital Araújo Barbosa de Oliveira, V.A. Agra Brandão, J.J. Silva Nascimento, Raimundo Pereira de Farias, W. Pereira da Silva, A.G. Barbosa de Lima
Drying, heating and shrinkage lumped models were proposed and fitted to experimental data.
The fitted results presented good agreement with experimental data.
Table 2 – Parameters of the Eq. 1 obtained by fitting to experimental data.
Table 3 – Parameters of the Eq. 2 obtained by fitting to experimental data.
The applicability of the models was examined through the statistical parameters and found that all the theoretical data agreed well with experimental data.
Online since: April 2021
Authors: Marion Merklein, Fabian Knieps, Manuel Köhl
Cost reduction and sustainability aspects lead this trend.
To calibrate this model, yield strength in three directions are needed as well as Lankford coefficients and biaxial input data.
The first method to correct stress strain data in the necking zone was proposed by Zhang et al. [8] for rectangular specimens but only up to a certain aspect ratio.
To consider the multiaxial stress state in the necking zone, the approach of Paul et al. was applied to the data measured in the above described two rows of facets.
While the standard procedure to evaluate the tensile test over the complete measuring length until tensile strength only reaches elongation up to about 0.1 plastic strain (A20 in Figure 3 (a)), the local measurement is able to provide flow curve data up to 0.4 (DIC local in Figure 3 (a)).
Online since: September 2013
Authors: Yong Cheng Jiang, Wang Bin, Zhi Chao Zhao
However, point to point transmission has a defect that whether or when the receiving end will be able to receive data is not sure after sending out data.
The end-to-end data transmission of Web Service system is shown in Figure 2.
Suffix tree mining algorithm This research collected the third quarter of quarterly report and business data of the case enterprise from 2010 to 2012, and apply panel data model to the analysis of the collected data.
According to these requirements, the proposed methods would perform the following two tests: (1) In data acquisition, test the capture ability of data packet.
To process the data package captured is another important indicator, and at the same time, data processing ability is the bottleneck of traditional system.
Online since: October 2011
Authors: Yong Kai Qiu, Yan Bin Yao, Jun Liu
Based on the analyses of these test data, this paper discusses the forming conditions and mechanisms of the favorable CBM reservoirs for high-rank coals.
Based on these test data, this paper discusses the forming conditions and mechanisms of the favorable CBM reservoirs for high-rank coals.
Fault development reflecting intense structural fractures leads to the reduction of permeability.
It will result in the closure of fractures, and reduction in coal permeability.
Conclusions Based on comparative analysis on a series of test data of high-rank CBM reservoirs in North China, researches indicate the difference characteristics of the favorable high-rank CBM reservoirs of which Qinshui Basin is better than other high-rank CBM reservoirs in North China in the following three aspects: (1) The average Ro, max of coals is 2.8%, most of which are semi-anthracite and anthracite in Qinshui Basin.
Online since: September 2016
Authors: Jiří Kolisko, Milan Rydval, David Citek, Stanislav Rehacek
The obtained experimental data serve as a basis for further systematic experimental verification and more accurate information about the significantly higher material properties of UHP(FR)C and its behavior in extreme conditions.
Fracture-mechanical properties as effective fracture toughness and specific fracture energy were calculated from obtained data results and will be published in the next paper.
The most important fact is that extreme conditions do not cause degradation of UHPC specimens or reduction of the bond.
The obtained data will find use as an input of material parameters for the numerical modelling of UHPFRC structures exposed to the fire and high temperature action and their damage level.
In contrary, the specimens made of ordinary concrete suffered from the reduction of the bond stress during pull-out tests.
Online since: December 2011
Authors: Jie Shen, Ismail Yurtdas, Cheikhna Diagana, Alex Li
Based on the experimental data, the failure mechanism of the prestressed SCC beams was discussed and the shear transfer mechanism of the RC beam after the flexure-shear cracking was also analyzed.
The experimental data measured by the strain gauges and transducers can be recorded in real time with the help of a data acquisition system.
In fact, the decrease of slope on the load-deflection curves implies the reduction of beam’s stiffness.
A better comprehension of the shear transfer mechanism can be obtained by analyzing the experimental data measured by the stain gauges.
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