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Online since: June 2019
Authors: Josef Fladr, Petr Bily, Zdeněk Prošek, Roman Chylík
Concrete costs and carbon footprint reduction belong to other benefits of fly ash use.
Effective features of each individual phase present in the composite were derived based on spectral deconvolution, in which mutual interaction of phases and data interference is taken into account.
Overall effective modulus of individual phases in each composite (Table 6) were determined from merged normalized histograms of indentation data on both levels (Fig. 1 – 4).
Maximum allowed divergence between structural and mechanical percentage representation of measured data did not exceed 5%.
With additional detailed investigation of ITZ, the data can be used in homogenization procedure to calculate overall Youngs modulus that can corroborate macro-mechanical measurement.
Online since: April 2015
Authors: Alexander I. Khaimovich, Andrey V. Balyakin, Natalia Galkina
High Speed Machining (HSM) has several advantages, such as reduced finishing operations, increase of the accuracy of treatment, reduction of the cost of processing, as well as improvement of the quality of the surface layer [1].
Based on the data processing of dependence of the effective stress strain, of strain rate intensity for the material analog, a model was built of the rheological properties of the material in the form of the law of the Johnson-Cook.
On the basis of the data in Table 2 a dependance was built based on the described method (Table 3), which helped to clarify the parameters of the rheological model of properties of the material of Johnson-Cook, responsible for high-speed hardening - and softening temperature in the processing of milling.
Table 2: Input data for the construction of a phenomenological model of the rheological properties of Johnson-Cook № exp.
A constitutive model and data for metals subjected to large strains, high strain rates and high, Proceedings of the 7th International Symposium on Ballistics, 541–547.
Online since: January 2012
Authors: Jun Song, Xiu Jie Ji, Bo Wen Cheng, Zhi Xiong Yang, Bo Wei Li, Dong Dong Xie, Qiu Ling Wang, Ying Jie Cai, Xian Lin Xu, Yuan Lin Ren, Guo Feng Zhang
X-ray diffraction data were collected at 113(2) K on Rigaku Saturn rotating anode diffractometer, using confocal Mo Kα radiation (λ = 0.71073 Å). 3.
X-ray diffraction data were collected at 113(2) K on a Rigaku Saturn rotating anode diffractometer, using confocal Mo Kα radiation (λ = 0.71073 Å).
Data collection, cell refinement and data reduction were processed by Crystal-Clear.
R-factors based on F2 are statistically about twice as large as those based on F, and R-factors based on ALL data will be even larger.
Online since: October 2017
Authors: Songtham Ruangchaithaweesuk, Thana Maihom, Piti Treesukol, Phornphimon Maitarad, Potjaman Poolmee, Tipawan Rungsawang, Juthathip Chorkate, Bundet Boekfa
The TDDFT was used to calculate the excited state and compared with our experimental data.
These values correspond to the experimental data at 555-562 nm whereas the B3LYP, PBE and ωB97X-D methods offered higher range of wavelengths at 618-620, 627-667 and 609-623 nm, respectively.
The X-ray crystallographic data revealed that the Cr-O bond distances are about 1.95-1.96 and 1.98-1.99 Å for Cr-O1-O4 of oxalate and Cr-O5-O6 of water, respectively [12, 13].
Consequently, the results from our calculations correspond to the experiment data.
These results agree well with our experimental data.
Online since: August 2023
Authors: Nesreddine Djafar-Henni, Rachid Chebili
In a study by [7], authors examined the size effects of shear strength of shear walls having different reinforcement ratios (0%, 0.5%, and 1%) and shear span ratios (0.5, 1, 1.5, and 2) by using the meso-scale simulation method and then validated by the existing experimental data.
Data selected for the considered buildings The considered RC buildings have the same in-plan views with evenly spaced frames at a distance of 4 meters (Figure 10).
The reason for the aforementioned observation is evident, which is explained by the reduction in the maximum strength when the stiffness ratio decreases.
Moreover, the plot clearly shows that there is a reduction in maximum story displacement when the stiffness ratio increases.
Figure 17: Inter-story drift ratios corresponding to each story height against different stiffness ratios As can be seen from this figure, there is a reduction in the inter-story drift ratio when the stiffness ratio increases.
Online since: June 2022
Authors: Fredrick M. Mwema, Tien Chien Jen, Cleophas Obara
The results indicated a reduction in the size of the grains after the deformation process, as seen in Fig. 2.
Temperature affected the grain growth while the strain affected the deformation and the dislocation of the grains, resulting in a reduction in the size of the grains.
The tensile testing data was used to evaluate the tensile strength and ductility shown in Table 3.
Fig. 7: A graph of stress versus displacement Table 4: Calculated stress, strain and ductility results for the samples Original samples Sample 1 Sample 2 Sample 3 Sample 4 Area (A) = W x H (mm2) 86.7692 37.824 28.353 38.1306 36.4953 Force (F) in KN 46.64 20.58 15.3 21.28 22.14 Ultimate tensile strength (Mpa) 537.517 539.614 544.09 558.082 606.653 Change in length (∆L) m 0.00068 0.00077 0.0007 0.00077 0.00083 Strain (ε) 0.00756 0.00780 0.0078 0.007546 0.00836 Ductility (%) 7.5684 7.5909 7.839 7.746 8.369 From the graph in Fig. 7 and data in Table 3, it was observed that the MDF improved the tensile strength of AA 7075.
However, at 400°C a significant decrease in ductility was witnessed, this was due to the reduction of mechanical twins and the increased impact of the diffusion process which is active at high temperatures [52].
Online since: October 2024
Authors: Trond Furu, Ole Runar Myhr, Mads Iddberg, Anders Nesse
The use of end-of-life aluminium products becomes more and more attractive as a metal source as there is a 95% reduction of energy consumed compared to primary based metal [4].
Python has been used as an orchestration tool, responsible for facilitating the simulations, transferring data between models, and allowing the optimization software to control the process- and design parameters.
The difference reflects the reduction in yield and flow stress as shown in Fig. 2 (b) when introducing a high iron content.
On one hand, for a given extrusion ram speed, the smaller cross section profile will extrude faster than a larger cross section profile, taking into account of the difference in reduction ratios.
Filice, “Metamodeling technique for designing reengineered processes by historical data,” Journal of Manufacturing Systems, vol. 45, 2017
Online since: April 2025
Authors: Majid Ali, Zeenat Khan
Methodology & Data Collection This study employs a systematic literature review methodology, which involves several steps to ensure rigor and comprehensiveness (Fig. 1).
Selected articles are then screened based on predetermined inclusion and exclusion criteria, focusing on publications from the last decade that provide empirical data or significant insights into the impact of insulation materials on energy consumption and CO2 emissions.
Fig. 3 Thermal Conductivity of Building Insulation Materials (Red) and Carbon Footprint Reduction (Green) [28]. 4.
This reduction is crucial for minimizing greenhouse gas emissions and advancing sustainable building practices [37].
Ultimately, integrating sustainable design and innovative insulation technologies will contribute significantly to combating climate change and achieving essential emission reduction goals.
Online since: February 2014
Authors: Roland Madar, Thierry Ouisse, Didier Chaussende, Martin Seiss, Kanaparin Ariyawong, Eirini Sarigiannidou, Odette Chaix-Pluchery, Nikolaos Tsavdaris, Jean Marc Dedulle, Yun Ji Shin, Joseph La Manna
In parallel to the vapor phase processes and after being tried in the sixties and put aside, the growth of SiC from high temperature solution [9, 10] is back in force because of its inherent strengths, especially for the reduction of extended defect density.
Extended defect reduction during bulk growth has been and still is the topic of intensive works as it paves the way to very high power devices.
Most of the thermodynamic data related to SiC sublimation have been measured using high temperature Knudsen effusion cell coupled with mass spectrometry [20, 21].
With this set of data, the equilibrium gas phase composition for the Si-C binary system can be computed easily [22, 23] and included in the full process modeling [5, 24].
Katsuno, et al., Defect Formation and Reduction During Bulk SiC Growth, in: W.J.
Online since: December 2014
Authors: Jin Yang Xie, Lin Sun, Fa Yang Jin, Song He, Wan Fen Pu
A number of studies on foam quality have shown that foam exhibits mobility reduction properties where the foam quality is rated between 45% and 95% (Blauer,1974 [14]; Schramm,1994 [15]; Chang, 1998 [16]), which means the gas liquid ratio is between 0.9:1.1 and 19:1.
Gas and liquid injection rates define the quality of the foam formed (i.e. ratio of gas rate to total injection rate), which will also impact its mobility reduction characteristics(Schramm, 1994a [20]; Chang, 1999[21]).
Experimental process below is set up, theequipment include: constant temperature oven, inner diameter of which is 70cm×75cm×123cm, upper limit of temperature is 180℃, with pressure sensors, data is automatically collected into a computer.A constant flow pump provides stable flow of 0~40ml/min.
A computer data acquisition system.
How Can Selective Mobility Reduction of CO2-Foam Assist in Reservoir Floods.
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