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Online since: June 2018
Authors: Cyril O. Ehi-Eromosele, J.A.O. Olugbuyiro, A. Edobor-Osoh, A.A. Adebisi, O.A. Bamgboye, J. Ojeifo
The FTIR spectral analysis, reduction in agglomeration of the particles and the elemental composition of the coated nanoparticles confirmed the presence of silica.
Therefore, the XRD data suggests that the silica shell consists mainly of amorphous phase rather than polycrystalline one [29] since there is the absence of silica-derived diffraction peaks.
Compared with the bare sample, there is a reduction in agglomeration of the particles.
The reduction in magnetization for the coated sample may be attributed to the presence of non-magnetic silica layer on the surface of NPs which reduces the particle-particle interaction and lowers the exchange coupling energy which in turn reduces the magnetization [39].
The reduction in magnetization might also be due to the lesser amount of magnetic substance per gram in the silica coated sample compared with the bare sample [40].
Therefore, the XRD data suggests that the silica shell consists mainly of amorphous phase rather than polycrystalline one [29] since there is the absence of silica-derived diffraction peaks.
Compared with the bare sample, there is a reduction in agglomeration of the particles.
The reduction in magnetization for the coated sample may be attributed to the presence of non-magnetic silica layer on the surface of NPs which reduces the particle-particle interaction and lowers the exchange coupling energy which in turn reduces the magnetization [39].
The reduction in magnetization might also be due to the lesser amount of magnetic substance per gram in the silica coated sample compared with the bare sample [40].
Online since: March 2007
Authors: Bernd Fischer, Jürgen Merker, David F. Lupton, Joerg Witte
In order to obtain materials data
necessary for the design of high temperature equipment and the numerical simulation of their
service performance the stress-rupture strength and creep behaviour have been investigated in a
temperature range between 1650°C and 2300°C.
For the design of equipment used at high temperatures and the numerical simulation of their service behaviour under industrial conditions it is necessary to have materials data on the stress-rupture strength and creep behaviour.
The measurements were carried out under a protective atmosphere (argon-hydrogen mixture) to prevent the evaporation of volatile oxides which would lead to a reduction in cross-section.
The measurement of stress-rupture strength and creep behaviour up to highest test temperatures was necessary to obtain materials data for the design of high temperature equipment and the numerical simulation of their service performance.
For the design of equipment used at high temperatures and the numerical simulation of their service behaviour under industrial conditions it is necessary to have materials data on the stress-rupture strength and creep behaviour.
The measurements were carried out under a protective atmosphere (argon-hydrogen mixture) to prevent the evaporation of volatile oxides which would lead to a reduction in cross-section.
The measurement of stress-rupture strength and creep behaviour up to highest test temperatures was necessary to obtain materials data for the design of high temperature equipment and the numerical simulation of their service performance.
Online since: January 2010
Authors: Oscar Ruano, Manuel Carsí, Felix Peñalba, Xabier Gómez, R. Allende
With these data
forming stability maps were generated to characterize the best forming conditions.
This not only reduces the costs but also help to meet the increasingly rigorous environmental requirements, especially the reduction of the emission of CO2 to the atmosphere [1].
The deformation data obtained from these tests were correlated by the following Garofalo equation using peak stresses: ( )[ ] 92.4 14 . 0098.0sinh107301.4 /398 exp σ ε x RT molkJ = (1) The stress exponent of 4.9 is close to that describing the slip creep behaviour of materials.
The high temperature data in the gamma region can be predicted by means of a Garofalo equation with a stress exponent of 4.9 and activation energy for deformation of 398 kJ/mol.
This not only reduces the costs but also help to meet the increasingly rigorous environmental requirements, especially the reduction of the emission of CO2 to the atmosphere [1].
The deformation data obtained from these tests were correlated by the following Garofalo equation using peak stresses: ( )[ ] 92.4 14 . 0098.0sinh107301.4 /398 exp σ ε x RT molkJ = (1) The stress exponent of 4.9 is close to that describing the slip creep behaviour of materials.
The high temperature data in the gamma region can be predicted by means of a Garofalo equation with a stress exponent of 4.9 and activation energy for deformation of 398 kJ/mol.
Online since: October 2007
Authors: Terence G. Langdon, Z. Horita, Cheng Xu
Experiments show that, depending
upon the magnitude of the imposed load, the reduction in disk thickness on application of the load is
of the order of <0.1 mm.
Inspection of Fig. 6 shows the results exhibit both a similarity and an important difference by comparison with the data recorded earlier in Figs. 2 and 5.
A disadvantage with the data shown in Figs 6 and 7 is that it provides hardness measurements only along a single linear traverse within each disk.
These data were then used to plot color-coded maps in which the various levels of hardness are denoted by different colors [20].
The results for the high-purity aluminum in Fig. 8 may be compared directly with earlier data reported for high-purity (99.99%) nickel [5].
Inspection of Fig. 6 shows the results exhibit both a similarity and an important difference by comparison with the data recorded earlier in Figs. 2 and 5.
A disadvantage with the data shown in Figs 6 and 7 is that it provides hardness measurements only along a single linear traverse within each disk.
These data were then used to plot color-coded maps in which the various levels of hardness are denoted by different colors [20].
The results for the high-purity aluminum in Fig. 8 may be compared directly with earlier data reported for high-purity (99.99%) nickel [5].
Online since: November 2025
Authors: Volodymyr Khalturin, Kyryl Korobchynskyi, Yurii Skob, Roman Maiboroda, Igor Bychkov
Deterministic analysis of the durability of window glass to the action of the blast wave consists of comparing the obtained distribution of the value of this factor with reference data for each type of glass and the degree of its destruction.
The research [9] combines experimental data with numerical modeling to analyze the behavior of laminated glass windows when exposed to blast loads.
In this case, we will obtain the distribution of the maximum excess pressure on the glass for comparison with reference data for different types of glass.
This is the essence of the mathematical model of an instantaneous hydrogen explosion used, which is validated on the basis of data from physical experiments on the explosion of hydrogen and propane [16].
If these results are compared with the reference data of Table. 1, we can draw conclusions about the integrity of a window glass coating of a particular type after an explosive load for different variants of the height of the protective wall.
The research [9] combines experimental data with numerical modeling to analyze the behavior of laminated glass windows when exposed to blast loads.
In this case, we will obtain the distribution of the maximum excess pressure on the glass for comparison with reference data for different types of glass.
This is the essence of the mathematical model of an instantaneous hydrogen explosion used, which is validated on the basis of data from physical experiments on the explosion of hydrogen and propane [16].
If these results are compared with the reference data of Table. 1, we can draw conclusions about the integrity of a window glass coating of a particular type after an explosive load for different variants of the height of the protective wall.
Online since: August 2015
Authors: Bukhari Manshoor, Amir Khalid, Izzuddin Bin Zaman
This reduction indicates an ineffective stress transfer between the fiber and matrix.
The data obtained was transmissibility versus frequency generated by VSC software.
It was observed that when the base excitation increase from 1mm to 1.5mm or 0.1g to 0.15g, the resonance and attenuation frequencies were shift to the lower values as well as resonance peak but sometime fluctuating data was found.
(a) Displacement and (b) acceleration transmissibility for epoxy/PALF composites Table 1 tabulates the average damping ratio of epoxy/PALF composite measured from transmissibility test data.
The data obtained was transmissibility versus frequency generated by VSC software.
It was observed that when the base excitation increase from 1mm to 1.5mm or 0.1g to 0.15g, the resonance and attenuation frequencies were shift to the lower values as well as resonance peak but sometime fluctuating data was found.
(a) Displacement and (b) acceleration transmissibility for epoxy/PALF composites Table 1 tabulates the average damping ratio of epoxy/PALF composite measured from transmissibility test data.
Online since: May 2013
Authors: Wei Fu, Zhen Guo Ou Yang
The value of every arthrosis angle {θ,θ,θ,θ} are transferred to servo system of bomb-disposed robot through data transfer station with MDS-EL7052/2510-220 MHz to accomplish the mission of remote control operation.
The value of every arthrosis angle {θ,θ,θ,θ} are transferred to servo system of bomb-disposed robot through data transfer station with MDS-EL7052/2510-220 MHz to accomplish the mission of remote control operation.
(3.1) F is linear force produced by worm gear deceleration mechanism;F,F is output forces grazed with left-right-two-half-circle gear of paw clamping mechanism separately; reduction ratio of the planet gear is 41553/325, reduction ratio of worm gear 62/1; T represents output effective torque of direct current servo electrical machinery; deceleration ratio of planet gear is 0.59; diameter of worm gear’s reference circle is 62mm.
Use data radio station to complete order transmission between PC104 and embedded target PC104.
The value of every arthrosis angle {θ,θ,θ,θ} are transferred to servo system of bomb-disposed robot through data transfer station with MDS-EL7052/2510-220 MHz to accomplish the mission of remote control operation.
(3.1) F is linear force produced by worm gear deceleration mechanism;F,F is output forces grazed with left-right-two-half-circle gear of paw clamping mechanism separately; reduction ratio of the planet gear is 41553/325, reduction ratio of worm gear 62/1; T represents output effective torque of direct current servo electrical machinery; deceleration ratio of planet gear is 0.59; diameter of worm gear’s reference circle is 62mm.
Use data radio station to complete order transmission between PC104 and embedded target PC104.
Online since: May 2022
Authors: Marie Amandine Pinault-Thaury, François Jomard
It consists in a step by step reduction of the raster size.
A reduction of the raster size induces an increase in the sputtering rate, and therefore more secondary ions are detected by time unit, resulting in an increase of the signal coming from the sample.
Therfore, DL is given here by the y-intercept of the linear fit of the data I(12C14N-) = f(Jp).
The dashed lines are the linear fit of the experimental data.
Moreover, lower raster size induces faster sputter rate and less data points, unsuitable for (ultra-) thin multilayer SiC samples [14].
A reduction of the raster size induces an increase in the sputtering rate, and therefore more secondary ions are detected by time unit, resulting in an increase of the signal coming from the sample.
Therfore, DL is given here by the y-intercept of the linear fit of the data I(12C14N-) = f(Jp).
The dashed lines are the linear fit of the experimental data.
Moreover, lower raster size induces faster sputter rate and less data points, unsuitable for (ultra-) thin multilayer SiC samples [14].
Online since: December 2011
Authors: Hao Tian, Guo Ping Li, Ai Rong Chen
Exposed to the aggressive environments such as concrete carbonation or chloride penetration, the deterioration of materials properties and reduction of sectional areas can lead to the variation of overall structural performance.
If necessary, models should be modified by the data derived from site or experiment.
Secondly, the effect of deterioration of materials properties and reduction of sectional areas on overall structural performance is evaluated by using the analysis method for lifetime performance.
If decreasing the inspection expense, however, the accurate evaluation of structural residual service life cannot be obtained with the insufficient inspection data
Two sections are included in this stage. 1) Determining the main design parameters of concrete bridge based on the existing design data and the site investigation.
If necessary, models should be modified by the data derived from site or experiment.
Secondly, the effect of deterioration of materials properties and reduction of sectional areas on overall structural performance is evaluated by using the analysis method for lifetime performance.
If decreasing the inspection expense, however, the accurate evaluation of structural residual service life cannot be obtained with the insufficient inspection data
Two sections are included in this stage. 1) Determining the main design parameters of concrete bridge based on the existing design data and the site investigation.
Online since: September 2005
Authors: Wilfried Goldacker, Rainer Nast, B. Obst, G. Kotzyba
cube textured
buffer layer (CeO2)
biaxially aligned
{111}
RD
TD Pole Figur e
[Ni3n31fa.cpr]
Nickel (m3m)
Complete data set
37777 data points
Stereographic projection
Upper hemisphere
Half width:5°
Cluster size:5°
Exp. densities (mud):
M in= 0.00, M ax=26.38
1
4
8
12
24
{111}
RD
TD
RD
RD
TD
Figure 4.
Pole figures of a Ni 99.9 % sheet (~100 µm thick) after thickness reduction of 98.7 %, showing a "copper-type rolling texture" (left), and of a thermomechanically processed Ni-4at% W alloy, the {111} peak positions indicating the presence of only the {001}<100> cube texture, with no remnants of the cold-rolled component present (right).
After swaging, the copper was rolled under plane strain and homogeneous rolling conditions to a ~ 100 µm thick strip (42 passes, 98.7 % reduction) with superior surface finish (root-mean square roughness Ra ~ 6 nm).
The data were gained from EBSD experiments. 018 Summary YBa2Cu3O7-δ (YBCO), a ceramic high-temperature superconductor at Tc = 90 K, seems to be the most promising material for coated conductor (CC) applications because of its high Jc at 77 K in the presence of high magnetic fields.
Pole figures of a Ni 99.9 % sheet (~100 µm thick) after thickness reduction of 98.7 %, showing a "copper-type rolling texture" (left), and of a thermomechanically processed Ni-4at% W alloy, the {111} peak positions indicating the presence of only the {001}<100> cube texture, with no remnants of the cold-rolled component present (right).
After swaging, the copper was rolled under plane strain and homogeneous rolling conditions to a ~ 100 µm thick strip (42 passes, 98.7 % reduction) with superior surface finish (root-mean square roughness Ra ~ 6 nm).
The data were gained from EBSD experiments. 018 Summary YBa2Cu3O7-δ (YBCO), a ceramic high-temperature superconductor at Tc = 90 K, seems to be the most promising material for coated conductor (CC) applications because of its high Jc at 77 K in the presence of high magnetic fields.