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Online since: November 2024
Authors: Joshua O. Atiba, Alima. O Derek, Ojo Sunday Isaac Fayomi
The generated diffraction data are compared to standard data on minerals from the ICDD mineral powder diffraction file, which contains data on over 3000 minerals.
The coated samples have similar standard minerals and diffraction data.
The data indicates that Zn-6MnO2 exhibited the most substantial mass gain, measuring at 0.30 g.
It's conceivable that process parameters played a role in the reduction of mass gain as MnO2 content increased [22–24].
Table 5 and Fig. 1 present the polarization data and polarization curve of the Zn-MnO2 coated sample in 3% wt NaCl environment.
Online since: January 2006
Authors: Gai Fei Peng, Sammy Yin Nin Chan, Qi Ming Song, Quan Xin Yi
Proper evaluation of fire resistance of concrete needs more experimental data obtained under various cooling regimes such as water spraying or water quenching.
Baker [6], using the previous reported data.
The reduction in residual strength was 5 % to 15 %, bigger than that in hot strength.
Proper evaluation of fire resistance of concrete needs more experimental data obtained under various cooling regimes such as water spraying or water quenching.
Proper evaluation of fire resistance of concrete needs more experimental data obtained under various cooling regimes such as water spraying or water quenching.
Online since: February 2011
Authors: Naghdali Choupani, M. Ziaee
The edge effects are minimized by using an appropriate design of the substrates so that experimental results give reliable data.
fIaw=321.4aw4-458.4aw3+231.3aw2-43.43aw+3.236,R2=0.999 (5) fIIaw=-17.47aw4+39.04aw3-24.39aw2+6.94aw-0.017,R2=0.998 (6) The total strain energy release rate (GT) decreases rapidly for loading angles close to pure mode-II loading with the reduction of opening-mode strain energy release rate.
Average critical mixed-mode-Interlaminar fracture toughness for twill PAN based Carbon/Epoxy composite for a/w=0.5 Loading Angle 0° 15° 30° 45° 60° 75° 90° KIC[MPa.m0.5] 2.583 2.572 2.51 2.472 2.41 2.379 --- KIIC[MPa.m0.5] --- 0.319 0.6899 1.1909 2.029 4.3366 5.876 The calculated critical interlaminar strain energy release rate values GIC and GIIC using experimental data under various loading conditions are summarized in Table 3.
Online since: March 2016
Authors: Qing Li, Jin Xia Song, Wei Peng Ren, Qiang Huang, Xin Guang Guan, Hao Chen
When aging treatments continued the regularization of γ' resulted in the improvement of stress-rupture life and the reduction of tensile elongation.
Each measured value is the average of at least 3 data obtained from 3 specimens.
When the cooling gas pressure raises further and cooling manner changes from static cooling to forced cooling, improvement of high temperature stress-rupture property and reduction of room temperature elongation ratio with increasing cooling rate take place.
By comparison of data in Fig. 7 and Fig. 8, it is easy to find that room temperature tensile strength and high temperature stress-rupture life of flat specimens are lower than those of cylindrical specimens.
As a result, the improvement of stress-rupture life and reduction of elongation ratio after aging treatment are predictable.
Online since: September 2005
Authors: Janice M. Dulieu-Barton, N. Sathon
Most recently, the technique has been developed to measure the SIFs during the fatigue crack growth [3] and new techniques for data noise reduction in this application have been suggested [4].
The X data image is the data that is in-phase with the loading cycle and the Y data image is the data that is out-of-phase with the loading cycle.
If Eq. 4 is valid then the Y data should be zero.
The phase angle data shown in Fig. 2 gives the phase shift from the reference datum for the Y-data.
However, the out-of phase data given in Fig. 3 shows a marked change in the shape of the Y-data depending on the notch depth.
Online since: August 2011
Authors: Yong Quan Yu, Ming Hui Wang, Bi Zeng
This paper carries out the simulation under various situations such as different navigation speed, sea conditions, encounter angle and ship parameter perturbation, to test the roll reduction and robustness of the roll controller designed.
Therefore, roll reduction is an important area of research.
The database stores parameters of the controller process, process output value, handled mediated data and other empirical parameters, such as classical domain sphere, extension domain sphere, characteristics mode classification.
From the figure we see that the roll reduction is approximately 46% for nonlinear model.
Rudder roll stabilization controller cannot limit it into the classical domain due to its limited roll reduction rate.
Online since: November 2021
Authors: Ilya Men
For general, closed form, material LCF data base establishment, the specimen FEA and testing is performed at several force loading points.
Therefore, for convenience, equations and data are given in terms of range and not amplitude, as is more common in full reverse studies.
This data is still widely used for thread strength assessment under different loading conditions.
Comparison with the reference experimental specimen testing data is provided in table 5.
Specimen geometry and loading waveform may be further adjusted to specific part requirements, thus improving experimental data customisation.
Online since: January 2016
Authors: Rosyida Permatasari, Tholudin Mat Lazim, Supriyadi Supriyadi, Tono Sukarnoto
The comparison between the results of the developed CFD models and the experimental data showed very close agreement.
Introduction Fluidization is a technique or a substantial reduction in the phenomenon of internal friction in the bed of solid particles with a counter force that the bed can flow like a fluid.
Because, the general application of the gas/particle flow systems and fluidization in the industry are for an increase in efficiency and the improvement of fundamentally based on realistic simulations, accurate and detailed experimental data and design tools for such systems.
All the models showed good agreement with the experimental data for axial liquid velocity and the fractional gas hold-up profiles.
However, for eddy diffusivity, only the 3D model predictions agree closely with the experimental data [6].
Online since: February 2013
Authors: Hai Feng Hu, Wen Jing Ma
The current paper used the measured data of Jia Lequan and simulated the surface deformation after removed the impact of the mountainous terrain to compare the trend and mechanism of the surface movement and parameters in repeated mining.
In order to improve the under-mined safety, and keep the protection pillar better on the basis of reducing the loss of coal resources, this article analysed the measured data of the repeated mining about 2#, 3#, 8# and 9# coal in Jia Lequan.
The analysis of surface movement deformation parameter Through analysis the observation data of 2#, 3 #, 8 # and 9 # coal seam, we got the surface deformation parameters in coal repeated mining condition in Table.2.
According to the measured data, .
Conclusion Combined the mining subsidence observation data of the three coal-seams and removing the impact of the mountainous terrain slip of Jia Lequan, we can conclude in these areas: (1) In repeated mining the values of surface movement and deformation are increased, and the damage of coal-seam and surface are enhanced.
Online since: December 2016
Authors: Jay Stuart, Dominika Búryová, Pavol Sedlák
One of the optimal and most economic ways of completing a thermal assessment of a building is with a precise dynamic thermal simulation, where a building envelope and its systems are simulated and evaluated in a virtual climate using real meteorological data.
To solve the problem, reduction of the simulation time-step is usually used, though the principle of the air flow is not handled.
The simulation is driven by real weather data and the time-evolution of the building's thermal conditions can be traced at intervals as small as one minute.
This improved the simulation results, but multiplied the data-intensive simulation and its handling – and the problem still persisted, especially in open plan offices.
The opening function data input for MacroFlo (IES) natural ventilation analysis.
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