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Online since: April 2015
Authors: Artur Rękas, Tomasz Latos, Łukasz Brodawka, Robert Budzyn, Marcin Fijałkowski
The data were collected during a 6-month production cycle of the same type of a product.
Then, the obtained data were compared to the mechanical properties determined for three different suppliers of charge sheets.
The data regarding the amount of defects and tool wearing were collected in a long production cycle
Fig. 21 Data compared to a plasticity margin In case of relating the analyzed data to the percentage elongation and the strain hardening factor, with so intensively work-hardened charge material, ​​decrease of the percentage elongation values by 1 point and increase of strain-hardening factor of 0.006, cause an increase in spoilage and worn tools.
Fig. 22 The data compared to elongation Fig. 23 The data compared to elongation and work-hardening coefficient (n) Conclusion - There is a relationship between the number of defects and the amount of worn tools.
Online since: August 2019
Authors: Adeyemi Adesina
As the main aluminosilicate precursor already used in AASC is a waste product of the metal industry (i.e. slag), the incorporation of waste as aggregate into the AASC will lead to further reduction in the cost of the concrete coupled with significant reduction in its embodied energy and carbon.
With most studies showing a reduction in mechanical properties with the incorporation of wastes as aggregate in concrete [4-7].
And the continuous reduction in the workability was observed with increasing RCA content.
Figure 1: 28 day's mechanical properties of AASC incorporating copper slag as a fine aggregate (data from [10]) Increase in the compressive strength was observed in AASC when RCA was used as a replacement of natural coarse aggregate up to 50%, after which there is a reduction in its compressive strength [15].
Sulphate attack on the AASC mixtures leads to a reduction in their compressive strength, with more reduction in strength observed with increasing RCA content [16].
Online since: June 2014
Authors: Shahab Shariatmadari, Ali Chegeni, Seyed Alireza Ghazanfari, Mahdi Nakisa, Reza Abbasabadi Hassanzadeh
Slightest reduction of this drag can lead to substantial fuel preservation and higher cargo capacity of airships [1].
( 1 ) For Example, parameters of the profiles 58- 4165 are as the following numbers: FR = L / d ( 2 ) Getler’s accurate data have been used by many scholars to test the numerical processes.
For the bulk Reynolds number defined based on body volume of Rev= 1.8 × 107, 60% reduction on the conventional torpedoes could be achieved.
[3] Lutz, T. andWagner, S., Drag Reduction and Shape Optimization of Airship Bodies, J. of Aircraft, Vol 35 No. 3, pp. 345-351, (1998)
H., Underwater Vehicle Drag Reduction Through Choice of Shape, AIAA Paper 66-657, (1966)
Online since: May 2006
Authors: M. Elcombe, Besim Ben-Nissan, A. van Riessen, Catherine Kealley
The data also shows the improvement of crystallinity during the heat treatment process.
Previously collected diffraction data of the carbon soot shows that the main peak of the material coincides with a peak from the HAp material at 28.1˚ 2-theta of MRPD data (indicated by the arrow in Figure 3).
The neutron diffraction data in Figure 3 shows reduction in the height of this peak during the heat-treatment in air between 700 and 800 °C, as the carbon phase is slowly burnt off.
The neutron diffraction data collected from the HIP samples, both pure HAp and a HAp+CNT composite, have been refined using the standard Rietveld profile refinement, where the parameters of a model are fitted to the collected data.
Rietica [3] was the program used to model the diffraction data with the hexagonal hydroxyapatite structure.
Online since: September 2014
Authors: Natalia Stepanova, Elena Lozhkina, Ivan Zhil'tsov, Alexey Razumakov, Viktor Kuznetsov
It had been shown that increasing the copper content in steel and cast iron has led to the reduction of the friction coefficient [1, 5].
It is known that copper does not react with carbon [3], and obtained by chemical analysis data showed that the carbon content in all samples is equal.
There is noticeable reduction of perlite and cupric phase.
If hypereutectoid steel is not alloyed by copper there is no noticeable decrease of wear resistance but there is a reduction of the coefficient of friction.
Data on the coefficient of friction and wear resistance were compared with standard materials used in large heavy-duty friction units, such as anti-friction cast iron and bronze.
Online since: March 2011
Authors: Tsunenobu Kimoto, Jun Suda, Gan Feng
Introduction In recent years, the crystalline quality of 4H-SiC wafers has been significantly improved with respect to reduction of micropipes [1].
The set-up can acquire data in a single wavelength mode (m-PL intensity mapping mode) or in a full spectral scanning mode (PL spectroscopy mode), with the spectral resolution of 1 nm.
The intensity reduction at the TSD is also slightly larger than that of TED.
The PL intensity is reduced in the irradiated region, being consistent with the reduction of carrier lifetime, as shown in Fig. 2(c).
Our data indicate that the carrier lifetimes longer than 0.5 ms are crucial for the nondestructive visualization of dislocations in 4H-SiC epilayers by m-PL mapping.
Online since: June 2015
Authors: Yogendra Prasad Yadava, R.A.S. Ferreira, Andrea G. de Sousa
According to the result of particle size analysis before and 24 hours after milling, there was a reduction of the average diameter of agglomerate 95.25% which is suitable to assist sintering of the composite, because this reduction increases the reaction rate the raw material during firing.
The intensities of Al2O3 peaks there was an increase of γ-Al2O3 with small reduction in α-Al2O3, confirmed in the plane (202) at the point of approximately 46o and plans (018) at ~64o and (214)~66 respectively.
According to the result of particle size analysis before and after milling for 24 hours, there was a reduction in the average particle diameter of 95,25%, which proved to be best adequate for sintering the composite, as this increases decrease the reaction rate of raw material during sintering.
[15] JCPDS - Joint Commite on Powder Diffraction Starndard, International Center of Diffraction Data
[20] JCPDS - Joint Commite on Powder Diffraction Starndard, International Center of Diffraction Data
Online since: January 2012
Authors: K. Sreekumar, Abhay Kumar Jha, Parameshwar Prasad Sinha, R. Suresh Kumar
Data on the cold workability of the material in different heat treatment conditions is essential for the flow forming of the material.
Considering that in the flow forming of rocket motor cases the starting material typically undergoes a total reduction of about 75-80% of the starting perform thickness [1], cold rolling was carried out to represent a total reduction in this range.
However, there was a reduction in the ductility of the starting material after cold working from 29% to 5.6% in the case of condition 1 and 23% to 5.7% in the case of condition 2.
However, there was a reduction in the ductility of the starting material after cold working from 29% to 5.6% in the case of condition 1 and 23% to 5.7% in the case of condition 2.
However, there was a reduction in the ductility of the starting material after cold working from 29% to 5.6% in the case of condition 1 and 23% to 5.7% in the case of condition 2.
Online since: August 2013
Authors: Jin Liang Xu, Shu Xiang Wang, Wei Zhang
The study provides experimental data that could be used for the design and development of more efficient exchangers for refrigeration conditioning, heat pump and some other systems.
Experimental facility and data reduction Fig. 1 shows a schematic of the experiment facility and test section.
All the experimental signals are collected and processed by Agilent 34970A data acquisition system.
Comparisons of the experimental data with existing correlations were made for 96 experimental data, as shown in Fig. 2.
The following hold for the straight tube: in the laminar range, fc=64/Re, and fc=0.3164/Re0.25 in the turbulent range, Meyer [7] experimental data for the straight tube was plotted as well.
Online since: October 2010
Authors: Chung Ming Ho, Wei Tsung Tsai
Result and discussion Compressive strength of recycled concrete The developments of compressive strength of recycled concrete specimens with various percentages of RBFA are shown in Fig.1 each data represents the average of test results of three cylinders.
The reduction of UPV is increased with an increase in RBFA content.
A positive relationship between strength and UPV is observed and quadratic regression curve was used to correlate the experiment data.
A positive relationship between strength and UPV is observed and a quadratic regression curve was used to correlate the experiment data.
Similarly, a positive relationship between residual strength and residual UPV is clearly observed and a quadratic regression curve was to correlate the experiment data.
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