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Online since: September 2022
Authors: Mahmoud Samy, Mona G. Ibrahim
Ibrahim1,3,b
1Environmental Engineering Department, Egypt-Japan University of Science and Technology
(E-JUST), New Borg El Arab City, Alexandria 21934, Egypt
2Department of Public Works Engineering, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt
3Environmental Health Department, High Institute of Public Health, Alexandria University, Alexandria 21544, Egypt
amahmoud.samy@ejust.edu.eg, bmona.gamal@ejust.edu.eg
Keywords: Degradation rates; Iron waste; Methylene blue; Operating parameters; Real wastewaters
Abstract.
Su et al. (2019) found that pH values of 4 and 6.5 were favorable for the degradation of orange II using α-FeOOH@GCA in the presence of persulfate ions [19].
El-Etriby, Synthesized nano titanium for methylene blue removal under various operational conditions, Desalin.
El-Etriby, D.C.
Su et al. (2019) found that pH values of 4 and 6.5 were favorable for the degradation of orange II using α-FeOOH@GCA in the presence of persulfate ions [19].
El-Etriby, Synthesized nano titanium for methylene blue removal under various operational conditions, Desalin.
El-Etriby, D.C.
Numerical Modeling of Square Footing Subjected to Eccentric Loading on Geogrid Reinforced Loose Sand
Online since: August 2020
Authors: Bushra S. Albusoda, Semaa Z. Al-Saady
Al-Saadi1,b*
1Department of Civil Engineering, University of Baghdad, Baghdad, Iraq
adr.bushra_albusoda@coeng.uobaghdad.com, bsaadysemaa@gmail.com
Keywords: Geogrid, soil model, interface, modeling, numerical analysis.
Abo El-Soud, Numerical modeling of geogrid reinforced soil bed under strip footings using finite element analysis, 18thInternational Conference on Civil and Construction Engineering, Jeddah, Saudi Arabia, Volume 10 (2016)
Abo El-Soud, Numerical modeling of geogrid reinforced soil bed under strip footings using finite element analysis, 18thInternational Conference on Civil and Construction Engineering, Jeddah, Saudi Arabia, Volume 10 (2016)
Online since: October 2010
Authors: Yusaku Fujii, Koichi Maru
Proposal of compact optical system using planar lightwave circuit for precision measurement based on levitation mass method
Koichi Maru1,a and Yusaku Fujii1,b
1Department of Electronic Engineering, Gunma University, Kiryu Gunma 376-8515, Japan
amaru@el.gunma-u.ac.jp, bfujii@el.gunma-u.ac.jp
Keywords: Planar lightwave circuit; Levitation Mass Method; precision measurement
Abstract.
On the other hand, Fujii et al. have proposed a method based on the law of conservation of momentum, in which an impulse is generated and directly transferred to the transducer being tested [2,3].
On the other hand, Fujii et al. have proposed a method based on the law of conservation of momentum, in which an impulse is generated and directly transferred to the transducer being tested [2,3].
Online since: February 2011
Authors: Tomasz Tokarski
In order to determine yield point (YP), ultimate tensile strength (UTS) and total elongation (El) tensile test experiments were performed.
STEM micrograph of water atomized material W: (a) extruded at 375°C (white arrows are markers for iron inclusions), (b) extruded at 325°C with element mapping (O, Al, Mg) of magnified area.
Extrusion temp. 375°C 325°C C W A N W A N YS [MPa] 75 76 105 63 106 129 143 UTS [MPA] 103 103 140 153 120 154 168 El [%] 36 37 24 22 11.1 8.3 6.7 HV 31 30.1 37.9 44.5 36.2 46 49.9 HV Std.
STEM micrograph of water atomized material W: (a) extruded at 375°C (white arrows are markers for iron inclusions), (b) extruded at 325°C with element mapping (O, Al, Mg) of magnified area.
Extrusion temp. 375°C 325°C C W A N W A N YS [MPa] 75 76 105 63 106 129 143 UTS [MPA] 103 103 140 153 120 154 168 El [%] 36 37 24 22 11.1 8.3 6.7 HV 31 30.1 37.9 44.5 36.2 46 49.9 HV Std.
Online since: July 2016
Authors: Gheorhe Solomon, Corneliu Rontescu, Dumitru Titi Cicic, Maria Cristina Dijmarescu
Heat input, El **
[KJ/mm]
2.87
2.30
2.67
2.75
1.02
7.
El=kUIvs x 10-3 (kJ/mm), (2) k - Thermal efficiency, dimensionless, I - Welding amperage, (A), U - Welding arc voltage, (V), vs - Welding speed, (mm/s).
Table 4 Chemical composition of the stainless steel and the welded seam Joint Area Chemical elements [%], determined as the average of 5 measurements Fe C Si Mn P S Cr Mo NI Al Co Cu Nb Ti V W Pb Sn B Ca Zr As other elements X2CrNiMo17-12-2 68.98 0.0246 0.3466 1.74 0.0139 0.005 16.54 1.798 9.878 0.0111 0.0974 0.2692 0.0085 0.0033 0.0834 0.0589 0 0 0 0 0 0 0.1669 Welded seam 63.02 0.0535 0.6524 0.732 0.0146 0.0105 22.18 0.2514 12.6 0.0116 0.0713 0.0775 0.0219 0.0450 0.0704 0.02 0 0 0 0 0 0 0.1674 Nie= Ni+30C+0,5Mn (3) Cre= Cr+1,4Mo+1,5Si+0,5Nb (4) Values obtained: ü for X2CrNiMo17-12-2 : Nie=11.25%; Cre=20.25% ü for the welded seam : Nie=14.57%; Cre=23.42% Using the formulas above and the Schaeffler diagram for determining the weld microstructure, of the austenitic stainless steel and the welded seam, resulted that the amount of ferrite presented in the metal is between 10% and 20%.
El=kUIvs x 10-3 (kJ/mm), (2) k - Thermal efficiency, dimensionless, I - Welding amperage, (A), U - Welding arc voltage, (V), vs - Welding speed, (mm/s).
Table 4 Chemical composition of the stainless steel and the welded seam Joint Area Chemical elements [%], determined as the average of 5 measurements Fe C Si Mn P S Cr Mo NI Al Co Cu Nb Ti V W Pb Sn B Ca Zr As other elements X2CrNiMo17-12-2 68.98 0.0246 0.3466 1.74 0.0139 0.005 16.54 1.798 9.878 0.0111 0.0974 0.2692 0.0085 0.0033 0.0834 0.0589 0 0 0 0 0 0 0.1669 Welded seam 63.02 0.0535 0.6524 0.732 0.0146 0.0105 22.18 0.2514 12.6 0.0116 0.0713 0.0775 0.0219 0.0450 0.0704 0.02 0 0 0 0 0 0 0.1674 Nie= Ni+30C+0,5Mn (3) Cre= Cr+1,4Mo+1,5Si+0,5Nb (4) Values obtained: ü for X2CrNiMo17-12-2 : Nie=11.25%; Cre=20.25% ü for the welded seam : Nie=14.57%; Cre=23.42% Using the formulas above and the Schaeffler diagram for determining the weld microstructure, of the austenitic stainless steel and the welded seam, resulted that the amount of ferrite presented in the metal is between 10% and 20%.
Online since: January 2021
Authors: R.D.K. Misra, Zhao Dong Wang, Xiang Tao Deng, Yue Yue Jiang
University Avenue, University of Texas at El Paso, El Paso 79968, USA
ajiangyueneu@163.com, bzhdwang@mail.neu.edu.cn, cdengxiangtao123@163.com
Keywords: rare earth element Ce, mechanical properties, high-angle grain boundaries, inclusions.
C. et al. (2017) 'Influence of rare earth elements on microstructure and mechanical properties of high speed steel', Powder Metallurgy Technology, [2] Sun, M.
C. et al. (2017) 'Influence of rare earth elements on microstructure and mechanical properties of high speed steel', Powder Metallurgy Technology, [2] Sun, M.