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Online since: April 2015
Authors: Tomasz Sak, Stanisław Pietrzyk
The composition of the investigated alloys corresponds to the composition of the Cu-Pb-Fe alloys obtained via the reduction of the slag obtained during the direct-to-blister flash smelting process in an electric furnace.
Currently, copper is recovered from the slag by reduction in the electric furnace using coke and CaCO3 as a flux.
They solved the Laplace equation numerically by fitting a curve to the measured data points describing the shape of the drop.
The goodness of the fit was measured as the sum of squares of distances between data points and the fitted curve.
Online since: September 2013
Authors: Guo Qing Zha, Yong Bo Zhang
It is observed that the failure of specimens tested in hot and wet conditions always occurs as a result of out-of-plane microbuckling that is attributed to the reduction of matrix strength.
The effects of moisture and temperature on the reduction of the mechanical properties of composites were studied by many researchers.
The equation can be written as (4) In the study of [8] we have proved this model by implied a new model for the stiffness of the foundation determination, the new stiffness was calculated by (5) The final compressive strength of the UD composite can be obtained by (6) Prediction results A comparison is made between the predicted compressive strength values and the experimental data, which were listed in the Table 1.
As shown, the predicted compressive strengths by microbuckling model are the lowest ones compared to other models, and the values of prediction are generally 30% lower than the measured result. when using the kinking model, the predicted results are also generally 20% lower than the experimental data.
Online since: October 2004
Authors: Zbigniew L. Kowalewski
The experimental data achieved are discussed in detail and used to verify the basic assumptions of the recovery creep theory.
Although the problem has been previously studied experimentally for several materials, only limited amount of available data reflects the influence of plastic predeformation on creep process up to rupture [1, 2, 5, 8, 10].
Up to now the amount of experimental data is still insufficient to estimate exactly whether the increase or decrease of creep strengthening occurs up to a certain amount of prior deformation only, or whether this creep property is in some way proportional to the amount of predeformation.
The creep data for aluminium alloy exhibit the same tendency of lifetime variation due to prestraining in both temperatures under the question, namely, an extension of lifetime proportional to the magnitude of plastic prestrain.
• It has been found that a good agreement between experimental data and predictions of the recovery creep theory can be achieved only for sufficiently low level of predeformation, lower than 5% in the case of copper, and lower than 6% for aluminium alloy.
Online since: June 2015
Authors: Darko Makovec, Tatiana Plutenko, Oleg V'yunov, Dmytro Plutenko, Anatolii Belous
In contrast to these data, the authors of [[] N.
From literature data one can assume that the introduction of lithium-bismuth titanate decreases sintering temperature and improves electrical properties of pure barium titanate due to the presence of liquid lithium- and bismuth-containing phase at the boundaries between grains.
XRPD patterns were collected in the range 2θ = 10–150° in step-scan mode with a step size of Δ2θ = 0.02° and a counting time of 6 s per data point.
Impedance data were obtained using a 1260 Impedance / Gain-phase Analyzer (Solartron Analytical) in the range 10 Hz to 1 MHz.
Therefore, the data can be analyzed in terms of an equivalent circuit consisting of three RC elements connected in series, which represent bulk, outerlayer and grain-boundary components.
Online since: October 2013
Authors: Qi Shen Zhu
The GCC is an auto-vectorization compiler across iterations of loops to parallelism data.
Most opportunities for data parallelism usually occur in loops.
Improving performance time is often required for applications, it is important for data centers and real-time systems[3].
Line 13 matches if-statement to max reduction or if-statement to min reduction.
One loop can deal 0x10 addresses of 4 32-bits data in code 2, and only 0x4 addresses of 1 32-bits data can be dealt in scalar code 3.
Online since: April 2010
Authors: James D. Scofield, Anant K. Agarwal, Jim Richmond, Joseph Neil Merrett, Scott Leslie
SiC power module VTH data as a function of temperature.
Data represents the average of 4 modules (5 parallel 20A or 2 parallel 80 A die).
On the other hand, the data shown is representative of the nominal VTH observed.
Fig. 4 shows the average measured switch forward voltage module (Vf) data for ID=100 A.
The data reflects a significant reduction in on-state 100 A conduction losses of 41% and 38% at 25 and 150°C, respectively.
Online since: July 2007
Authors: Manfred Geiger, Marion Merklein
The request here is given by the reduction of drawing forces as well as springback.
Consequently a lot of parameters, e.g. blank and tool geometry, contact condition, temperature dependent material behavior, tool´s thermo-mechanical reaction, process parameters …, are needed and a number of input data, describing the thermal and the mechanical material behavior have to be determined.
The most important input data are a functional description of the flow stress σ = f(T,ε,dε/dt), the heat transfer coefficient and heat conductivity.
The reasons are the necessity of thermo-mechanical coupled calculation and the increasing number of boundary conditions and input data.
Karjalainen: Testing and evaluation of material data for analysis of forming and hardening of boron steel components.
Online since: January 2010
Authors: Gennadiy Stepanov, Anatoli Babutsky, Leopold Kruszka
Data about gage strains and their changes under slotting were obtained using commercial ICP CON I-7016P module.
Using ICP CON I-7520 (RS 232) module above data was transferred into PC.
Residual stresses distributions calculated using strain registration data before and after PEC treatment are presented on Fig.2.
The same equipment as above was used for measuring, storing and processing of the data of strain registration.
The same equipment as above was used for measuring, storing and processing of the data of strain registration.
Online since: September 2014
Authors: Xiang Yang Xu, Liang Yi Cui, Yan Xiao Fu, Peng Dong
The conclusion shows that with an accurate dynamic model, simulation results and test results are neighborhood data, the simulation model can be used to help realizing the ultimate goal of better shift quality with higher efficiency, lower shift loads and improved shifting comfort.
TC2t=TEt-IE∙aEt TC1t=0 (3) For the purpose of assisting slip control of the clutch and reducing the impact of shifting, an Engine Management System (EMS) is needed to receive the torque reduction signal as well as the quantitative value from transmission ECU through CAN-bus.
The target value of engine torque reduction can be calculated by Eq. 4.
Due to the combined effect of the engine torque reduction and the clutch torque increase, the engine speed is pulled down to the 4th gear speed line, see graph (b).
Therefore only the control of clutch torque reduction is used here; second, if the engine torque stays high, the speed synchronization process will be adversely affected.
Online since: November 2015
Authors: Ji Xian Gong, Qiu Jin Li, Jian Fei Zhang, Zheng Li, Hui Qin Li, Yan Fei Ren
The percentage of antibacterial activity was calculated with the following equation: Reduction rate (%) R= (B-A)/ B× 100 In the equation, R is the % reduction in bacterial count.
Table 1 Shades of protein fabric dyed with extracting solution of tea and apocynum Fabric dyed with extracting solution Apocynum Tea Silk Wool Table 2 Colourimetric data of the dyed protein fabric L* a* b* c* H K/S Tea Silk 58.09 12.05 14.37 18.75 50.03 4.84 Wool 57.48 9.31 22.63 24.47 67.63 13.65 Apocynum Silk 69.29 7.13 15.56 17.12 65.37 1.97 Wool 57.65 8.48 19.61 21.37 66.60 6.72 Color characteristics of all the processed fabrics were determined with the value of CIE L*, a*, b*, c*, H and K/S values.
Fastness properties of the samples, such as light fastness, washing fastness and rubbing fastness, were examined and the fastness data of tea and Apocynum dyed samples are given in Table 3.
It is observed from wash fastness data that, all the tea and Apocynum dyed samples showed very good wash fastness rating of 5 and no staining on adjacent white fabrics (wool/silk and cotton) was examined.
The results showed a less 10% reduction rate.
Showing 7211 to 7220 of 40324 items