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Online since: November 2005
Authors: Han Sur Bang, Gyu Baek An, Mitsuru Ohata, Masahito Mochizuki, Masao Toyoda
Okashita, et al.: Journal of Japan Society of Civil Eng.
Otsuka, et al.: Journal of the Society of Materials Science of Japan, Vol. 29 (in Japanese) (1976), p. 55 [8] H.
Shimanuki, et al.: Journal of the Society of Naval Architects of Japan Vol. 186 (in Japanese) (1999), p. 475 [9] M.
Toyoda, et al.: Proc. 3rd Int.
Yasuda, et al.: Journal of Constructional Steel Vol. 8 (in Japanese) (2000), p. 425 [11] K.
Otsuka, et al.: Journal of the Society of Materials Science of Japan, Vol. 29 (in Japanese) (1976), p. 55 [8] H.
Shimanuki, et al.: Journal of the Society of Naval Architects of Japan Vol. 186 (in Japanese) (1999), p. 475 [9] M.
Toyoda, et al.: Proc. 3rd Int.
Yasuda, et al.: Journal of Constructional Steel Vol. 8 (in Japanese) (2000), p. 425 [11] K.
Online since: February 2023
Authors: R.P. Karthikeyan, V. Rathaamani, M. Thirumaran
Xia yang Chen et al (2019)
The multistage spear- phishing model (MSPAD-SGM) used to detect the spear phishing attack.
Nureni Ayofe Azeez et al (2021) An automated white-list phishing technique is used for the detection of phishing attack.
Wei Wei et al (2020) Phishing websites detection based on URL address and algorithm used is DNN-CNN .
[9] El Aassal, Ayman, Shahryar Baki, Avisha Das, and Rakesh M.
[11]El Aassal, A., Baki, S., Das, A., & Verma, R.
Nureni Ayofe Azeez et al (2021) An automated white-list phishing technique is used for the detection of phishing attack.
Wei Wei et al (2020) Phishing websites detection based on URL address and algorithm used is DNN-CNN .
[9] El Aassal, Ayman, Shahryar Baki, Avisha Das, and Rakesh M.
[11]El Aassal, A., Baki, S., Das, A., & Verma, R.
Online since: May 2004
Authors: Filiz Çinar Şahin, Onuralp Yucel, S. Erçayhan, Bora Derin
In this study, the formation of aluminum nitride via carbothermal reduction and
nitridation by using Seydişehir Al(OH)3 as the raw material has been investigated.
The stoichiometric ratio of carbon black and aluminum hydroxide (C:Al(OH)3) was calculated from Eq. 1 and selected to be 2 and 2.83.
Temperatures were also measured with 6RhPt-30RhPt (EL-18) thermocouple.
Chemical composition of Al(OH)3.
Conclusions It is possible to obtain AlN powder by carbothermal reduction and nitridation of Seydişehir Al(OH)3.
The stoichiometric ratio of carbon black and aluminum hydroxide (C:Al(OH)3) was calculated from Eq. 1 and selected to be 2 and 2.83.
Temperatures were also measured with 6RhPt-30RhPt (EL-18) thermocouple.
Chemical composition of Al(OH)3.
Conclusions It is possible to obtain AlN powder by carbothermal reduction and nitridation of Seydişehir Al(OH)3.
Online since: September 2013
Authors: Fang Zhu, Jun Fang Wei, Xiao Yan Zhang
A monodisperse nanocrystalline HZSM-5 zeolite was prepared by varying-temperature synthesis method with aluminum nitrate (Al(NO3)3), tetraethyl orthosilicate (TEOS), and tetrapropyl ammonium hydroxide (TPAOH) as raw materials.
Tetraethyl orthosilicate (TEOS) aluminum nitrate(Al(NO3)3) and tetrapropylammonium hydroxide (TPAOH) were purchased from Tianjin Kermel Chemical Reagent Co., Ltd.
TPAOH were used as templates, Al(NO3)3 and TEOS used as aluminum source and silicon source respectively.
The synthesis mixture was prepared by first dissolving the Al(NO3)3 and TPAOH in deionized water under stirring.
El-Shahat, I.A.
Tetraethyl orthosilicate (TEOS) aluminum nitrate(Al(NO3)3) and tetrapropylammonium hydroxide (TPAOH) were purchased from Tianjin Kermel Chemical Reagent Co., Ltd.
TPAOH were used as templates, Al(NO3)3 and TEOS used as aluminum source and silicon source respectively.
The synthesis mixture was prepared by first dissolving the Al(NO3)3 and TPAOH in deionized water under stirring.
El-Shahat, I.A.
Online since: January 2005
Authors: Guo Qing Zhang, Zhou Li, Zhong Wu Liu, Zhi Hui Zhang, Yifei Zhang, Hua Yuan, Rui Ping Yao, Shibin Xu, Shi Fan Tian, Ming Gao Yan
Benz et al.: Powder Metallurgy, Vol. 37 (1994), p.213
Tian et al.: Superalloys 1992 (ed.
Imam et al.), (TMS, Warrendale, PA, USA 1998), p.1687
Zhang et al.
Bauckhage et al.), (Bremen University 2000), p.161.
Tian et al.: Superalloys 1992 (ed.
Imam et al.), (TMS, Warrendale, PA, USA 1998), p.1687
Zhang et al.
Bauckhage et al.), (Bremen University 2000), p.161.
Online since: July 2017
Authors: Erica Donnelly, Alicia Restrepo, David J. Kvam, Yi Yu Duan
Methods
The FML specimen investigated in this simulation has a typically structure: two layers outside are aluminum alloy (AL) and the layers inside are glass fiber reinforced epoxy (GE) and the Kevlar reinforced epoxy (KE).
As a result the stack sequence is AL-GE-KE-GE-AL, as shown in Fig. 2.
Composites layups setup for the FML Ply Name Material Element Relative Thickness Rotation Angle Ply-1 AL 0.333 0 Ply-2 GE 0.117 0 Ply-3 KE 0.1 45 Ply-4 GE 0.117 0 Ply-5 AL 0.333 0 The engineering properties for the four constituent materials are shown in Table 2.
To find these engineering constants, the mixtures laws are applied [21]: EL=EfVf+Em(1-Vf) (1) ET=Em1+EmEf-1Vf (2) 1GLT=VfGf+1-VfGm (3) νLT=νfVf+νm(1-Vf) (4) where Ef, Vf, Gf and νf are the Young’s modulus, volume fraction, shear modulus and Poisson’s ratio for fibers, Em, Gm and νm the properties of polymer matrix.
It is worth noting that the loading should not exceed the yield strength for the metal layer (AL), as the simulation for the strain-stress behavior only applies to the elastic region.
As a result the stack sequence is AL-GE-KE-GE-AL, as shown in Fig. 2.
Composites layups setup for the FML Ply Name Material Element Relative Thickness Rotation Angle Ply-1 AL 0.333 0 Ply-2 GE 0.117 0 Ply-3 KE 0.1 45 Ply-4 GE 0.117 0 Ply-5 AL 0.333 0 The engineering properties for the four constituent materials are shown in Table 2.
To find these engineering constants, the mixtures laws are applied [21]: EL=EfVf+Em(1-Vf) (1) ET=Em1+EmEf-1Vf (2) 1GLT=VfGf+1-VfGm (3) νLT=νfVf+νm(1-Vf) (4) where Ef, Vf, Gf and νf are the Young’s modulus, volume fraction, shear modulus and Poisson’s ratio for fibers, Em, Gm and νm the properties of polymer matrix.
It is worth noting that the loading should not exceed the yield strength for the metal layer (AL), as the simulation for the strain-stress behavior only applies to the elastic region.
Online since: September 2017
Authors: Mohamed Bouzit, Blissag Bilal, Houssem Laidoudi
The Flow and Mixed Convection around Tandem Circular Cylinders
at Low Reynolds Number
Laidoudi Houssem1,a*, Blissag Bilal2, Bouzit Mohamed3
1,3Laboratoire des Sciences et Ingénierie Maritime (LSIM), Faculté de Génié Mécanique,
USTO-MB, BP 1505, El-Menaouer, Oran, 13000, Algérie
2Département d’Hydraulique, USTO-MB, BP 1505, El-Menaouer, Oran, 13000, Algérie
ahoussem.laidoudi@univ-usto.dz
Keywords: Mixed convection, Tandem cylinders, Heat transfer, Nusselt number, Recirculation zone, Drag coefficient.
Harimi et al. [1] performed a numerical investigation on the flow and heat transfer in tandem circular cylinders for moderate Reynolds numbers.
Amir Nejat et al. [9] studied the forced convection heat transfer of two dimensional incompressible of non-Newtonian fluid over a pair of elliptical tandem cylinders confined in a horizontal channel.
Singh et al. [10] examined the mixed convection flow with slip and convective heat transfer along a continuously moving vertical plate in the presence of uniform free stream.
Mirzakhalili, et al., Non-Newtonian power-law fluid flow and heat transfer computation across a pair of confined elliptical cylinders in the line array, J. of Non-Newtonian Fluid Mechanics, 171-172(2012) 67-82
Harimi et al. [1] performed a numerical investigation on the flow and heat transfer in tandem circular cylinders for moderate Reynolds numbers.
Amir Nejat et al. [9] studied the forced convection heat transfer of two dimensional incompressible of non-Newtonian fluid over a pair of elliptical tandem cylinders confined in a horizontal channel.
Singh et al. [10] examined the mixed convection flow with slip and convective heat transfer along a continuously moving vertical plate in the presence of uniform free stream.
Mirzakhalili, et al., Non-Newtonian power-law fluid flow and heat transfer computation across a pair of confined elliptical cylinders in the line array, J. of Non-Newtonian Fluid Mechanics, 171-172(2012) 67-82
Effect of Long-Period Stacking Order Phase and α-Mg Phase on Strength and Ductility of Mg-Zn-Y Alloy
Online since: January 2012
Authors: Yoshihito Kawamura, Masafumi Noda
However, the mechanical properties of Mg alloys are inferior to those of Al alloys, and their range of industrial applications is limited.
Fig. 5 TEM micrographs of an annealed sample of extruded Mg96Zn2Y2 alloy Thermal Stability of Extruded Mg96Zn2Y2 Alloy Figure 6 (a) shows the yield strength (Y.S.) and elongation (El.) for a sample of extruded Mg96Zn2Y2 alloy for annealing times of up to 1000 h at 573 K when tested at room temperature and 523 K.
(b) (a) Fig. 6 Mechanical properties of samples of Mg96Zn2Y2 alloy annealed for various times up to 1000 h (Y.S. = yield stress; El. = elongation; T = testing temperature) (a) and TEM micrograph of a sample of Mg96Zn2Y2 alloy annealed at 573 K for 1000 h (b).
Fig. 5 TEM micrographs of an annealed sample of extruded Mg96Zn2Y2 alloy Thermal Stability of Extruded Mg96Zn2Y2 Alloy Figure 6 (a) shows the yield strength (Y.S.) and elongation (El.) for a sample of extruded Mg96Zn2Y2 alloy for annealing times of up to 1000 h at 573 K when tested at room temperature and 523 K.
(b) (a) Fig. 6 Mechanical properties of samples of Mg96Zn2Y2 alloy annealed for various times up to 1000 h (Y.S. = yield stress; El. = elongation; T = testing temperature) (a) and TEM micrograph of a sample of Mg96Zn2Y2 alloy annealed at 573 K for 1000 h (b).