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Online since: October 2014
Authors: Cheng Tung Chong, Simone Hochgreb
Despite improved understanding of the breakup of a liquid jet by a high-speed turbulent gas jet, there is little experimental data suitable for validation regarding the spatial distribution of droplet size and velocity within the spray as a function of spray geometry and fuel properties.
The increase of ALR reduces droplet SMD value significantly, up to about a value of 4, beyond which there is insignificant reduction of SMD due to the near choking limit at nozzle.
For ALR beyond 4, reduction of droplet SMD becomes insignificant due to near choking limit at the nozzle outlet.
The data can be used for injector and spray modelling, while the atomizer can be utilised to develop lab-scale burner for fuel combustion testing.
Online since: June 2014
Authors: Cosme Roberto Moreira Silva, R.A. Muñoz, J.E. Rodriguez, Paola Cristina Cajas, A.C.M. Rodrigues
The software Search-Match was used to identify and to compare the crystal structure obtained in this work with the data available at International Centre for Diffraction Data (ICDD).
The sintering curve S1 strongly promotes the grain growth, resulting in the reduction of the density of grain boundaries, fact that could increase its electrical behavior.
This result provides beneficial effects on the electrical behavior of the material attributed to the resistivity reduction of the grain boundary which causes an increase in the total conductivity of the ceramic from 1.35 E-5 E-5 to 2.15 Ω-1 cm-1 at 400 ° C.
Online since: October 2013
Authors: Abu Bakar Sulong, Hafizawati Zakaria, Rajabi Javad, Aziz Hasyimah, Abdolali Fayyaz, Norhamidi Muhamad
A B C D Time[HH:MM:SS] Torque(Nm) A B C D Solids loading reduction is considered to be a damage for the process because the components undertakes a higher shrinkage which lead to a more difficult dimensional product control .
This is related to the powder volume reduction , arising from larger binder expansion and disentanglement of the molecular chain when heating process [15].
In other words, the viscosity data shows the feedstock flowability.
All value of viscosity feedstock is in consistency with level less than 45 Pa.s, all value of Shear rate data are in the range 10 2 – 105 S-1 as well.
Online since: November 2017
Authors: Andrei G. Kotousov, Ian H. Brown, Frank J. Barbaro, Walter Costin, Reza Ghomashchi, Olivier Lavigne, Valerie Linton
The presence of hydrogen in iron and steel often implies a reduction of the fracture resistance which may lead to sudden catastrophic failure.
Failure traditionally occurred in the weld heat affected zone (HAZ) of the parent metal but with the introduction of micro-alloying and the associated reduction in carbon content, cracking is now more likely to occur in the weld metal (WM) [2].
The data was collected from the highlighted areas as shown in Fig.1b and analysed using OIM-Analysis 5.2 software (TSL Co., Ltd.).
The EBSD data collected was used to create and superimpose Image Quality (IQ) and Inverse Pole Figure (IPF) maps to evaluate how the specific microstructures of AF and UB determine their intrinsic resistance to a propagating hydrogen crack.
Online since: January 2018
Authors: F.M.N. Silva, Erivaldo Genuíno Lima, Meiry Gláucia Freire Rodrigues
Fluorescence Spectroscopy X-ray Energy Dispersive and crystallinity data for the samples synthesized in this work.
The results show that there was a decrease in crystallinity by incorporation of metal oxides of molybdenum, nickel and cobalt, with a small reduction can be justified by impregnating low levels in the samples.
According to the International Data Center library is Diffractional (JCPDS) DRX obtained for the MoO3 (JCPDS registration: 47-1320) discloses the presence of a monoclinic material whose identified peaks (2θ) are: 12.78, 23.34, 25.71, 25.92, 27.32, 33.13, 33.77, 38.99, 39.67, 45.78, 46.31, 52.82, 57.69 and 58.84°, Fig. 2 (a).
The peak intensities of MoO3/HMOR catalysts NiO/HMOR and Co2O3/HMOR, Fig. 2 (b), 3 (b) and 4 (b), showed a reduction, this decline in intensity peaks also implies the entry of oxides of the metals molybdenum, nickel and cobalt for mordenite zeolite channels.
Online since: January 2020
Authors: Mohammed Ali Abdulrehman, Ismail Ibrahim Marhoon, Harith Hasoon Al-Moameri
XRD data were obtained from 2Ɵ=20° to 80° with a scanning speed of 5°/min at room temperature.
The reduction of UV radiation absorbance for PMMA/1%CAT leads to reduce the photochemical degradation reactions, in other words decreasing the severity of the interaction between the carbonyl group and UV radiation.
So, the reduction in absorbance that happened after adding specific concentrations of CAT lead to reduce the interactions between incident rays and PMMA chromophores.
Data from top to bottom refers to powder CAT, pure PMMA, PMMA+1%CAT.
Online since: September 2020
Authors: Bandar Tchari, Singh Amares
It was proven that it reduces the Cu plates bending and deformation during the test, permitting more reliable far-field displacement data collection.
It is normal for the hypo eutectic Sn-50Bi to have lower shear strength (40.78 MPa) than 52 MPa (Sn-50Bi), because of the reduction of Bi wt% and increment of Sn wt%.
The data was supported by [9], who has conducted a similar experiment and reported the Sn-Bi hardness values for different Bi wt% from 0 to 100%.
Reduction in the IMC thickness would increase the joint strength.
Online since: January 2015
Authors: Eugeniusz Hadasik, Dariusz Halaczek
For a fixed value of percent reduction of area (in the cross section) the temperature in the drawing die increases with increasing the drawing speed.
On the basis of literature data it can be assumed that the temperature in the drawing die increases roughly in proportion to the cube root of the drawing speed [10]: (1) where: vc – drawing speed.
Application of good lubricants leads to a temperature reduction in the drawing die.
Base on the data included in Tables 2, 3, it can be concluded that together with an increase of the mechanical properties of the material increases the surface temperature of the wire during the drawing process.
Online since: August 2013
Authors: Bo Huang, Hua Lu, Hua Shuai Zhao, Meng Meng, Ming Liang
And this paper use the test system of Split Hopkinson Pressure Bar (SHPB) to survey the impact test action of different porosity red sandstone in different coupling medium in order to obtained the dynamic waveform of fluid-solid coupling red sandstone under impact loading using theoretical analysis and laboratory data.
He found that stress wave through the broken rock specimen will have a greater attenuation and reduction of the dynamic strength of rock.
Fig.5 The incident wave and reflected wave oscillogram of red sandstone in different coupling medium Fig.6 The transmitted wave oscillogram of red sandstone in different coupling medium Conclusions This chapter is Split Hopkinson Pressure Bar (SHPB) test system on the red sandstone under different porosity and coupling state impact test, through the collation and summarized of data, obtain the following conclusions: (1) Analyzed the dynamic performance of different porosities red sandstone under similar impact velocity, the results showed that porosity is one of the main factors affect on the dynamic performance, the higher the porosity, the smaller the transmission peaks.
Online since: January 2012
Authors: Frank Montheillet, David Piot, L. Pallot
In this paper, the above mechanisms will be illustrated by a set of data pertaining to titanium alloys.
In fact, experimental data show that the hot deformation behaviour of the b phase in titanium alloys is quite similar in ferritic steels or the bcc a phase of standard steels, as well as in aluminium alloys, in spite of their different crystallographic structures, which will be illustrated by some examples.
Moreover, at larger strain rates, whereas the migration rate is likely to be larger due to stronger driving forces, it is counterbalanced by the reduction of the migration time, which results in much smaller boundary migration distances.
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