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Online since: February 2011
Authors: Mosleh Al-Shamrani, Refat El-Sheikhy
Fe-Base Metallic Glass Coating Produced by Gas Tunnel Type Plasma Spraying Fast Laboratory Test for Mechanism of Natural Nanoclay-Water Interaction Refat El-Sheikhy* , Mosleh Al-Shamrani** *, ** Professors, Civil Engineering Dept, College of Engineering Bughshan Research Chair, King Saud University, P.
Fig. 5 SEM analyses of nano Si/Al powder and fibers Fig. 6 XRD pattern for Saudi nano Si /Al powder.
Manias, et. al., Chen.
Hbaieb, et. al., polymer 48, 901-909, (2007)
Wang, et. al, Polymer 48 , 7301-7308, (2007).
Online since: February 2011
Authors: Chao Yi Xia, Feng Li Yang, Tie Yi Zhong
Zhu Dongsheng et al. studied on the design parameters of the seismic isolation bridges, and the effects of initial period, ductility ratio as well as the ratio of the stiffness after yielding to the stiffness before yielding on the seismic isolation of bridges were investigated [1].
Li Jianzhong et al. researched on the optimum design of seismically isolated continuous bridges and presented the optimum design method for continuous bridges [2].
Kyu-Sik Park et al. solved the contradiction between the reduction of the maximum forces and the increment of the beam displacement by introducing the weight coefficients [3].
The site which the bridge locates is I-site, and 3 earthquake waves of San Fernando, El Centro and Long Beach are selected as the excitations for the optimization of the LRB design parameters.
Design parameters of LRB and the seismic responses Items Minor earthquake Design earthquake Severe earthquake San Fernando El Centro Long Beach San Fernando El Centro Long Beach San Fernando El Centro Long Beach Qy(105N) 1.0098 1.4468 1.3484 1.1798 2.9530 3.3285 1.050 4.386 3.464 K1(107N/m) 2.069 1.000 4.825 3.883 6.140 8.135 5.877 9.956 9.753 α 0.354 0.123 0.085 0.302 0.116 0.167 0.339 0.126 0.184 rd(cm) 1.94 1.77 1.93 5.47 5.37 4.81 9.99 9.92 9.26 SI (mm) 550.2 623.0 430.1 2024.2 1730.6 1523.5 4499.8 3538.6 3104.4 M(107N∙m) 0.6170 0.4051 0.7133 2.5606 2.0264 2.7638 6.2474 4.6170 5.6000 The iteration histories of the maximum relative displacement between beam and the top of the pier, and the iteration history of maximum moment at bottom of the pier as well as the time-history of the relative displacement between beam and top of the pier for design earthquake intensity of San Fernando earthquake excitation are shown in Fig. 3, Fig. 4 and Fig. 5 respectively.
Online since: August 2012
Authors: Xin Mei Li, Xiao Feng Dong
The results show that the surface of the obtained pure aluminum coatings is acicular, while blocks Al-Mn compounds phase exists in Al-Mn alloys layer, and the Al-Mn alloy layer is composed of Al, FeAl3, Fe2Al5 and MnAl6 phases.
Conclusions The Al-2%wtMn, Al-9%wtMn and Al-13%wtMn alloy coatings were prepared on low carbon steel by HAD treatment.
The surface of the obtained pure aluminum coatings is acicular, while blocks Al-Mn compounds phase exists in Al-Mn alloys layer, and the Al-Mn alloy layer is composed of Al, FeAl3, Fe2Al5 and MnAl6 phases.
Al-Rubaie, Humberto N.
[7] E.L.
Online since: December 2013
Authors: Mohd Amri Lajis, Noor Hakim Rafai, N.A.J. Hosni
Sokovic et al. [3] reported that, when the cutting speed increased, the contact zone temperature increase which leads to a substantial reduction in tool life.
El-Bestawi et al. [4] found that tool life decreased with increased cutter diameters as the radial depth of cut increased.
Krain et al. [5] reported that an increase in immersion ratio resulted in an overall reduction of tool life.
Haron et al.[8] reported that there was a strong bonding between the chip and tool material.
[4] El-Bestawi, M A, El-Wardany, T I , Yan, D and Tan, M.
Online since: May 2013
Authors: Jin Chen, Xiao Ping Pang
In literature [4], a Fourier series function was used by Xiaoping Pang, et. al. to represent the general film geometry of the bearing in circumferential direction.
For example, Leung et. al.[5] first examined a bearing having a spherical shape but their treatment showed that its behavior was similar to that of a comparable cylindrical bearing.
On the other hand, the results obtained by El Gamal[6] in his analysis for a symmetrical wedge shaped bearing, showed that for small wedge angle the bearing was found superior to the plain cylindrical one.
EL-Gamal: Journal bearing Wear,184 (1995), P.111
EL-Gamal: XI National Conf on Industrial Tribology, Jan 22-25,1995, New Delhi, India
Online since: January 2010
Authors: Dong Yang Li, Cheng Jia Shang, C. Chen, J.Y. Weng
Ujiro et al., J.Soc.Mat.Sci.
El-Taib Heakal.
[11] S.S.Abd El Rehim, A.A.
El Samahi, A.
El Sayed, Br.
Online since: March 2020
Authors: Mamdouh Eissa, Hassan Bahaa-Eldin, Ahmed Al-Sheikh, Mohamed Kamal El-Fawkhry, Taha Mattar
New Approach for Multiplying the Strength and the Formability of Cold Rolled BCC Based Structure Steel through Ultra Fine Structure Technique Hassan Bahaa-Eldin1,a, Mamdouh Eissa1,b , Ahmed Al-Sheikh2,c, M.K.
Chemical composition,% C Mn Si S P Al V Ti V+Ti H1 0.08 2.07 0.39 0.012 0.04 0.016 0.012 0.003 0.015 H2 0.08 2.1 0.5 0.01 0.036 0.02 0. 103 0.03 0.135 Fig.1 Schematic diagram of the applied regimes for the studied steel. 3.
Kyun et. al, has found that the character of cementite after subcritical annealing regime of low carbon steel completely converted into fine, dispersed and spheroid, which certainly support the steel with high formability character [14].
Et Al., Development Of Cold-Rolled Dual-Phase Steels With Tensile Strength Above 1000 Mpa And Good Bendability, Metall And Mat Trans A, 46: 4755, 2015
El-Kashif, K.
Online since: May 2011
Authors: Lian Ying Wu, Yang Dong Hu, Cong Jie Gao
Mussati et al.[9] developed a mathematical model based on a superstructure, which simultaneously embeds an enormous number of alternatives, including three commonly operating modes for the evaporator: MSF-BR, MSF-M, and MSF-OT systems and their combinations.
El-Dessouky, I., Desalination, 115,155–179 (1998)
[4] Salah Al-Hengarim, Mohamed El-Bousiffi, Walid El-Mudir, desalination, 182, 73-85(2005)
[6] El-Dessouky, H.; Alatiqi, I.; Ettouney, H., Desalination, 115, 155-179( 1998)
Online since: September 2014
Authors: Salil Sainis, Nageswara Rao Muktinutalapati, Geetha Manivasagam, Ashwary Pande, Santhosh Rajaraman
Mechanical Testing was carried to evaluate Ultimate Tensile Strength (UTS), 0.2% Yield Strength (YS), % Elongation (%El.), % Reduction in area (%RA) and hardness.
Contrepois et al [12] who studied the effect of rate of heating to aging temperature on α precipitation in Ti-5553, reported similar observations.
A selected set of SA and DA treatments based on studied by Santhosh et al [2, 9] have been used in this investigation.
However, studies by Wu et al [13] indicated that heating rates as high as 10 oC/min can influence the precipitate density in this alloy.
Schmidt, E.L.
Online since: November 2013
Authors: Mohamad Rusop, Nurul Hafizah A. Rahman, Azrif Manut
The trapped electrons recombine with the incoming holes from the anode to produce highly intense electroluminescence (EL).
However, using OLED structures, Hirata et al. [13] have examined the carrier transport mechanism of a DNA complex.
The trapped electrons recombine with the holes from anode to produce higher electroluminescent (EL) intensity.
Apart from that, the variation concentration of surfactant also affects the (J-V) characteristics and EL intensity.
The enhancement of electroluminescent (EL) intensity and efficiency of the device has been achieved.
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