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Online since: November 2022
Authors: Jing Wee Koo, Jia Shin Ho, Jia An, Yi Zhang, Chee Kai Chua, Tzyy Haur Chong
.; Al-Ketan, O.; Rowshan, R.; Abu Al-Rub, R.
F.; Cocuzza, M.; El-Tamer, A.; Hinze, U.; Chichkov, B.
[13] Al-Shimmery, A.; Mazinani, S.; Ji, J.; Chew, Y.
F.; Cocuzza, M.; El-Tamer, A.; Hinze, U.; Chichkov, B.
[13] Al-Shimmery, A.; Mazinani, S.; Ji, J.; Chew, Y.
Online since: February 2009
Authors: Zhong Qun Li
As for inserted cutters, Fu et al. [1] provided a comprehensive
model.
Engin et al. [6] presented a generalized mathematical model of inserted cutters for the purpose of predicating cutting forces, vibrations and stability lobes in milling.
As for cutting conditions optimization of milling process, Salamie et al. [7] presented a feedrate optimization in machining of sculptured surfaces with ball-end mills, in which the optimization is implemented by controlling the simulated cutting forces.
El-Mounayri: International Journal of Machine Tools & Manufacture, Vol. 42 (2002), pp. 595-605
Engin et al. [6] presented a generalized mathematical model of inserted cutters for the purpose of predicating cutting forces, vibrations and stability lobes in milling.
As for cutting conditions optimization of milling process, Salamie et al. [7] presented a feedrate optimization in machining of sculptured surfaces with ball-end mills, in which the optimization is implemented by controlling the simulated cutting forces.
El-Mounayri: International Journal of Machine Tools & Manufacture, Vol. 42 (2002), pp. 595-605
Online since: May 2016
Authors: Sima Dimitrijev, Hamid Amini Moghadam, Amirhossein Aminbeidokhti, Daniel Haasmann, Ji Sheng Han
However, Okamoto et. al. [5] measured sequential C–V curves and suggested that this shift is due to tunneling of electrons to NIOTs with shallow energy levels just below the bottom of the conduction band of SiC and not due to deep interface traps.
Furthermore, Gurfinkel et. al. [8] have attributed the threshold voltage instability to the near interface oxide traps with energy levels above the conduction band.
Lalis et. al. [2] have attributed this phenomenon to activation of more NIOTs as the result of breaking weak bonds by application of an electric field at elevated temperature.
El, Basic mechanisms of threshold voltage instability and implications for reliability testing of SiC MOSFETS, IEEE Trans.
Furthermore, Gurfinkel et. al. [8] have attributed the threshold voltage instability to the near interface oxide traps with energy levels above the conduction band.
Lalis et. al. [2] have attributed this phenomenon to activation of more NIOTs as the result of breaking weak bonds by application of an electric field at elevated temperature.
El, Basic mechanisms of threshold voltage instability and implications for reliability testing of SiC MOSFETS, IEEE Trans.
Online since: June 2014
Authors: Liang Chen, Wei Huang, Yong Feng Li, Kai Xuan Tan, Yang Hu, Yan Shi Xie, Zheng Qing Wang
This paper reference Tessier process and related literature(Wu el al.,2007), and the occurrence of uranium in the samples were divided into the exchangeable, the bound to carbonates, the bound to Fe-Mn oxides, the bound to sulfide-organic matter speciation and the residual to extract respectively, and the concretely operates as follows: Weighing 2.0000 g classics drying and grinding to 200 core sample in 50 ml conical flask. (1) the exchangeable, (2) the bound to carbonates, (3) the bound to Fe-Mn oxides,(4) the bound to sulfide-organic matter speciation, (5) the residual.The “TiCl3 reduction-NH4VO3 oxidation titration” was used in vast majority of the concentration and grade of the occurrence mode of uranium, and the “5-Br-PADAPspectrophotometry” was used in individual samples of low concentration.
References [1] R J Bowell, J Grogan, M Hutton-Ashkenny, et al.
[2] X Y Yang, M X Ling, W Sun, et al.
References [1] R J Bowell, J Grogan, M Hutton-Ashkenny, et al.
[2] X Y Yang, M X Ling, W Sun, et al.
Online since: October 2011
Authors: Chen Guo, Liang Yi, Lian Fa Yang
Mori et al. [11, 12] have simulated the axi-symmetric pulsating hydroforming of tubes by rigid-plastic finite element method and investigated that uniform expansion in the bugling region was obtained and the formability was improved by preventing the local thinning.
Hama et al. [13] have exhibited enough bulging height can be obtained by applying a small hydraulic pressure for an automotive part by the static explicit finite element method.
Yang et al. [14] explored the mechanism of pulsating hydro-forming by finite element simulation and concluded that the uniformity of wall thickness of a formed part was improved remarkably since the pulsating hydraulic pressure had driven the deformation zone into two alternating states “Tiny wrinkling appears and then disappeared’’.
[5] E.L.
Hama et al. [13] have exhibited enough bulging height can be obtained by applying a small hydraulic pressure for an automotive part by the static explicit finite element method.
Yang et al. [14] explored the mechanism of pulsating hydro-forming by finite element simulation and concluded that the uniformity of wall thickness of a formed part was improved remarkably since the pulsating hydraulic pressure had driven the deformation zone into two alternating states “Tiny wrinkling appears and then disappeared’’.
[5] E.L.
Online since: January 2016
Authors: Mohamed Shokry, Khalid M. Saqr, Mohamed Shehadeh, Ali I. Shehata
A computational fluid dynamics (CFD) program FLUENT has been used by Kabir et al [17] to simulate the filter cake formation at high temperature and pressure conditions.
Xu et al [19] proposed the equivalent cake filtration modeling to describe filtration in Newtonian and non Newtonian fluids.
Figure (1): Quantitative solid concentration profile along the vertical axis Figure (2): Filter cake formation and profile and solid volume fraction distribution for the present study and kabir el al. [17] Figure (3): Comparison of filter cake thicknesses Model Sensetivity to Boundary Conditions The model sensetivity to a number of boundary conditions has been tested.
Xu et al [19] proposed the equivalent cake filtration modeling to describe filtration in Newtonian and non Newtonian fluids.
Figure (1): Quantitative solid concentration profile along the vertical axis Figure (2): Filter cake formation and profile and solid volume fraction distribution for the present study and kabir el al. [17] Figure (3): Comparison of filter cake thicknesses Model Sensetivity to Boundary Conditions The model sensetivity to a number of boundary conditions has been tested.
Online since: August 2006
Authors: N. Matsumoto, S. Ohtaki, M. Ohira, H. Kasayama
A part of the algorithm of
colour-values is shown in Fig. 3, and the colour-value is dissolved by using RGB system for an
Bi r ef r i ngent coat i ng exper i ment
and r ecor di ng wi t h
camera or video
Image pr ocessi ng of i sochr omat i c
f r i nge pat t er ns
Separ at i on of pr i nci pal st r ai n
difference by FEM
(Solution of Laplace's or
Poi sson' s epuat i on)
Cal cul at i on of el ast o- pl ast i c
stresses
element of original image.
Table 1 Chemical composition of the aluminum alloy Table 2 Mechanical properties, yield stress and elongation Fig. 4 Cross-shaped specimen Alminum Alloy Al Si Cu Fe Percent 99.63 0.09 <0.01 0.27 Mn Mg Cr Zn Ti <0.01 <0.01 <0.01 <0.01 0.01 E(GPa) σY (MPa) ν λ (%) 70.0 100.0 0.314 3.5 258 50 55 50 55 30 90 φ10 R20 R2. 548 4896φ.
Zandman et. al., Photoelastic Coating, ISU Press & SEM (1977)
[5] K.Washizu, Y.Yamada, et. al., Finite Element Handbook (Application),Baihukan Co. 175,(1993)
Table 1 Chemical composition of the aluminum alloy Table 2 Mechanical properties, yield stress and elongation Fig. 4 Cross-shaped specimen Alminum Alloy Al Si Cu Fe Percent 99.63 0.09 <0.01 0.27 Mn Mg Cr Zn Ti <0.01 <0.01 <0.01 <0.01 0.01 E(GPa) σY (MPa) ν λ (%) 70.0 100.0 0.314 3.5 258 50 55 50 55 30 90 φ10 R20 R2. 548 4896φ.
Zandman et. al., Photoelastic Coating, ISU Press & SEM (1977)
[5] K.Washizu, Y.Yamada, et. al., Finite Element Handbook (Application),Baihukan Co. 175,(1993)
Online since: December 2012
Authors: N.N. Hafizah, Mohamed Zahidi Musa, M. Rusop, Mohamad Hafiz Mamat
Cui et al prepared TiO2 in nanometer size by gas condensation method and studied its mechanical properties [6].
Manjunatha et al declared that the particle size is dependent on the precursor concentrations and reported the size decrease with the decrease of TiO2 precursor concentrations [21].
Ya Hsuan Liou et al in their study reported that at lower concentration of 0.1 M the nanoscale Fe0 had reduced in size to 9–10 nm [31].
Narayanan, M.A El-Sayed, Chem.
Manjunatha et al declared that the particle size is dependent on the precursor concentrations and reported the size decrease with the decrease of TiO2 precursor concentrations [21].
Ya Hsuan Liou et al in their study reported that at lower concentration of 0.1 M the nanoscale Fe0 had reduced in size to 9–10 nm [31].
Narayanan, M.A El-Sayed, Chem.
Online since: October 2012
Authors: Shi Zhu Tian, Da Peng Wang
The earthquake ground motion acceleration record is the EL-Centro (NS, 1940) with the peak acceleration of 3417mm/s2 and the interval of 0.02s.
References [1] Takanashi K, et al.
Journal of the Institute Science, University of Tokyo, Vol.26, No.11 (1974), p. 13-25 [2] Nakashima M, et al.
[6] Bonnet P A, Lim C N, Williams M S, et al.
References [1] Takanashi K, et al.
Journal of the Institute Science, University of Tokyo, Vol.26, No.11 (1974), p. 13-25 [2] Nakashima M, et al.
[6] Bonnet P A, Lim C N, Williams M S, et al.
Online since: October 2013
Authors: Ze Jia Hua, Na Huang, Ju Gao
References
[1] Chen Guangwen, Yuan Quan.Micro chemical technology[J].Journal of Chemical Engineering,2003,54(4):427~439
[2] W.El field,V.
Luo Guangsheng,Ma Yujun,Lv Yangcheng.trans.Beijing:Chemical Industry Press, 2004 [3] Gigeys Daniel,Pinto Devanand.Lab-on-a-chip:A revolution in biological and medical sciences[J].Analytical Chemistry,2000,72(9):330A~335A [4] Azzi A,A Al-Attiyah,Liu Qi,et al.
International Journal of Multiphase Flow, 2011, 37(9), 1129~1134 [6] Le Jun,Chen Wenguang,Yuan Quan,et al.Mass transfer research of gas-liquid tow phase flow in Micro channel[J].Journal of Chemical Engineering,2006,57(6):1296~1303 [7] Azzopardi B.J.Phase separation at T-junctions[J].Multiphase Science Technology.1999, 11:223~329 [8] Hirt C W,Nichols B D.Volume of fluid (VOF) method for the dynamics of free boundaries[J].
Luo Guangsheng,Ma Yujun,Lv Yangcheng.trans.Beijing:Chemical Industry Press, 2004 [3] Gigeys Daniel,Pinto Devanand.Lab-on-a-chip:A revolution in biological and medical sciences[J].Analytical Chemistry,2000,72(9):330A~335A [4] Azzi A,A Al-Attiyah,Liu Qi,et al.
International Journal of Multiphase Flow, 2011, 37(9), 1129~1134 [6] Le Jun,Chen Wenguang,Yuan Quan,et al.Mass transfer research of gas-liquid tow phase flow in Micro channel[J].Journal of Chemical Engineering,2006,57(6):1296~1303 [7] Azzopardi B.J.Phase separation at T-junctions[J].Multiphase Science Technology.1999, 11:223~329 [8] Hirt C W,Nichols B D.Volume of fluid (VOF) method for the dynamics of free boundaries[J].