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Online since: December 2011
Authors: Zi Dong Wang, Long Fei Zuo, Ben Ma, Li Xian Zhang, Hong Zhang, Zhan Lei Wei
C
Si
Mn
P
S
Ni
Cr
Mo
V
Nb, Ti, Al
≤0.04
0.17-0.37
0.4-0.7
<0.015
<0.01
4.4-4.8
0.4-0.7
0.32-0.55
0.06-0.09
---
Results and Discussion
Mechanical Properties.
Besides, both the YS and EL increased to 733MPa and 11.65% respectively.
Also 16.2% EL and 0.91 ratio of YS-UTS were achieved.
(b) EL and Ratio of YS-UTS Fig.1.
EDS analysis told us that the elements contained in nanoparticles are mainly Nb (Atomic 28.63%) and Ti (22.10%) accompanied little Cr, V, Mo and Al.
Besides, both the YS and EL increased to 733MPa and 11.65% respectively.
Also 16.2% EL and 0.91 ratio of YS-UTS were achieved.
(b) EL and Ratio of YS-UTS Fig.1.
EDS analysis told us that the elements contained in nanoparticles are mainly Nb (Atomic 28.63%) and Ti (22.10%) accompanied little Cr, V, Mo and Al.
Online since: October 2016
Authors: Abdellah El Barkany, Ahmed El Biyaali, Hassana Mahfoud
Wang et al. [20], proposed a parameter estimation method of the maximum likelihood of the DTM, and Hu et al.[21], established a non ideal DTM solved by a genetic algorithm.
The decision to study these systems is motivated by their high criticality, as indicated in Mahfoudet al [34].
El Barkany, and A.
El Barkany, and A.
El Biyaali, “A Hybrid Decision-Making Model for Maintenance Prioritization in Health Care Systems,” Am.
The decision to study these systems is motivated by their high criticality, as indicated in Mahfoudet al [34].
El Barkany, and A.
El Barkany, and A.
El Biyaali, “A Hybrid Decision-Making Model for Maintenance Prioritization in Health Care Systems,” Am.
Online since: August 2024
Authors: Gregor Pobegen, Michel Bockstedte, Magdalena Weger
Near-interface-traps (NITs), reported by Afanasev et al.
Recently, El-Sayed et al. suggested wide-angle O-Si-O bonds as defect configuration, that act as electron traps and have a similar energy as the measure trap level.
Identification of Traps In 1997, Afanasev et al. measured near-interface-traps (NITs), that could be emptied by an optical energy of 2.77(5) eV [10].
A recent theoretical study by El-Sayed et al. reported on a strongly localized electron, which appears in a disordered oxide due to a wide O-Si-O angle [11] and has a similar energy value of about 3.17 eV.
El-Sayed, Physical Review B 89.12 (2014)
Recently, El-Sayed et al. suggested wide-angle O-Si-O bonds as defect configuration, that act as electron traps and have a similar energy as the measure trap level.
Identification of Traps In 1997, Afanasev et al. measured near-interface-traps (NITs), that could be emptied by an optical energy of 2.77(5) eV [10].
A recent theoretical study by El-Sayed et al. reported on a strongly localized electron, which appears in a disordered oxide due to a wide O-Si-O angle [11] and has a similar energy value of about 3.17 eV.
El-Sayed, Physical Review B 89.12 (2014)
Online since: May 2023
Authors: Mustafa Chouireb, Oulad Naoui Noureddine, Abdelkader Djehiche, Gafsi Mostefa
Table 2 contains the results of leakage flow through EL-Haimeur and Boubrik dams using Seep/W, empirical equation, and q_ANN.
These models were validated through their application in two real dams located in deferent regions (El-Haimeur and Boubrik).
Al-Janabi, A.
Al-Ansari, Z.
Khattab, Stability analysis of Mosul dam under saturated and unsaturated soil condition Al-Rafidain, Engineering Journal 18(1), (2009) 13-27
These models were validated through their application in two real dams located in deferent regions (El-Haimeur and Boubrik).
Al-Janabi, A.
Al-Ansari, Z.
Khattab, Stability analysis of Mosul dam under saturated and unsaturated soil condition Al-Rafidain, Engineering Journal 18(1), (2009) 13-27
Online since: May 2012
Authors: Shong Loong Chen, Cheng Tao Ho
Fu et al. [1] indicated that the basin has a circumference of nearly 70 km and a size of 243 km2 above EL. +20m, only next to Taichung Basin.
Table 1 Sequence of excavation for each excavation stage Sequence of excavation Activities 1 1st excavation stage to EL -2.2 m, and installed 1 st level strutting ST1 at EL -1.5 m. 2 2nd excavation stage to EL -5.1 m, and installed 2 nd level strutting ST2 at EL -4.2 m. 3 3rd excavation stage to EL -7.5 m, and installed 3 rd level strutting ST3 at EL -6.6 m. 4 4th excavation stage to EL -9.0 m, and installed 4 th level strutting ST4 at EL -8.1 m. 5 Final excavation stage to EL -11.6 m.
No test was conducted to determine the Young’s modulus E, and therefore the triaxial compression tests and triaxial extension tests conducted by Kung et al. [2] on silty-clay of Taipei were studied to develop the normalized relationship between secant modulus and undrained shear strength for the clay of Taipei.
Wang et al. [3] pointed out that a number of previous tests conducted for Taipei Basin revealed that the normalized undrained initial stiffness modulus of clay was 500 when the strain was below 0.05%.
Looking at Ou et al. [8], the analysis results were close to the lower limit of the empirical value for Taipei Basin, which is δvmax /δhmax =0.5~1.0.
Table 1 Sequence of excavation for each excavation stage Sequence of excavation Activities 1 1st excavation stage to EL -2.2 m, and installed 1 st level strutting ST1 at EL -1.5 m. 2 2nd excavation stage to EL -5.1 m, and installed 2 nd level strutting ST2 at EL -4.2 m. 3 3rd excavation stage to EL -7.5 m, and installed 3 rd level strutting ST3 at EL -6.6 m. 4 4th excavation stage to EL -9.0 m, and installed 4 th level strutting ST4 at EL -8.1 m. 5 Final excavation stage to EL -11.6 m.
No test was conducted to determine the Young’s modulus E, and therefore the triaxial compression tests and triaxial extension tests conducted by Kung et al. [2] on silty-clay of Taipei were studied to develop the normalized relationship between secant modulus and undrained shear strength for the clay of Taipei.
Wang et al. [3] pointed out that a number of previous tests conducted for Taipei Basin revealed that the normalized undrained initial stiffness modulus of clay was 500 when the strain was below 0.05%.
Looking at Ou et al. [8], the analysis results were close to the lower limit of the empirical value for Taipei Basin, which is δvmax /δhmax =0.5~1.0.
Online since: May 2011
Authors: Hong Nan Li, Hui Qian, Di Cui, Huai Chen
Ocel et al. [12] and McCormick et al. [13] both investigated beam–column connections using SMA bars.
dissipation system under El seismic records.
Duerig, et al, Engineering aspects of shape memory alloys, Butter worth-Heinemann, London, (1990)
Indirli, et al, Proceedings of SPIE, Vol 4330, 262-272 (2001)
Cho, et al.
dissipation system under El seismic records.
Duerig, et al, Engineering aspects of shape memory alloys, Butter worth-Heinemann, London, (1990)
Indirli, et al, Proceedings of SPIE, Vol 4330, 262-272 (2001)
Cho, et al.
Online since: June 2010
Authors: De Lu Liu, Jian Zhang, Zhong Yi Li
Whereas the high Al concentration in C-Mn-Si-Al or C-Mn-Al TRIP steels leads to increasing of
carbon content in retained austenite (R.A.), thereby stabilizes the R.A.
It can be seen in Fig. 1 that the α+γ dual phase region expands into higher temperature with increasing the Al content from zero to 1.5wt%Al.
Effects of Al Content on Bainite Transformation.
Table 1 Mechanical properties of the TRIP 600 (averaged) No YS [MPa] UTS [MPa] EL [%] UTS×EL [MPa·%] I.A.
Rong, et al., Mater.
It can be seen in Fig. 1 that the α+γ dual phase region expands into higher temperature with increasing the Al content from zero to 1.5wt%Al.
Effects of Al Content on Bainite Transformation.
Table 1 Mechanical properties of the TRIP 600 (averaged) No YS [MPa] UTS [MPa] EL [%] UTS×EL [MPa·%] I.A.
Rong, et al., Mater.
Online since: August 2014
Authors: Jairo Cortes, Crhistian C.G. Segura
Introduction
For implementing a control that allows a biped robot some mobility, is necessary to handle various signals al time.
Results and discussionobjetivo del proyecto es el implementar el control de servomotores en la fpga dado que nos permite un paralelismo en las señales, de esta manera podemos tener las 6 salidas de PWM que necesita el servo de manera simultanea, esto con el objetivo de facilitar el control del robot.
· The versatility of the VHDL language and the ability to repeat several times the components making it necessary to perform a single PWM control and then replicate their performance many times as needed.objetivo del proyecto es el implementar el control de servomotores en la fpga dado que nos permite un paralelismo en las señales, de esta manera podemos tener las 6 salidas de PWM que necesita el servo de manera simultanea, esto con el objetivo de facilitar el control del robot.para esto se realizaron unos conteos intermos para poder obtener un pwm cuyo ancho de pulso se puede variar de 1.5 a 2 ms, y una frecuencia de 20ms entre cada pulso, estos son los estandares pra manejo de servos References [1] Motion generation of a biped locomotive robot using an inverted pendulum model and neural networks.
Results and discussionobjetivo del proyecto es el implementar el control de servomotores en la fpga dado que nos permite un paralelismo en las señales, de esta manera podemos tener las 6 salidas de PWM que necesita el servo de manera simultanea, esto con el objetivo de facilitar el control del robot.
· The versatility of the VHDL language and the ability to repeat several times the components making it necessary to perform a single PWM control and then replicate their performance many times as needed.objetivo del proyecto es el implementar el control de servomotores en la fpga dado que nos permite un paralelismo en las señales, de esta manera podemos tener las 6 salidas de PWM que necesita el servo de manera simultanea, esto con el objetivo de facilitar el control del robot.para esto se realizaron unos conteos intermos para poder obtener un pwm cuyo ancho de pulso se puede variar de 1.5 a 2 ms, y una frecuencia de 20ms entre cada pulso, estos son los estandares pra manejo de servos References [1] Motion generation of a biped locomotive robot using an inverted pendulum model and neural networks.
Online since: August 2015
Authors: Mostafa Yuness, Amer Mohamed, Moustafa Abd El-Hady, Mona Moustafa, Hyam Nazmy
Ching et al. measured fb=0.055 in urban dwellings in Kaohsiung, Taiwan [31].
Abd El-hady, M.
Al-Jarallah, F.
Al-Shukri, Indoor radon measurements in dwellings of four Saudi Arabian cities.
Al-Tamimi, Natural radioactivity due to radon in Soum region, Jordan.
Abd El-hady, M.
Al-Jarallah, F.
Al-Shukri, Indoor radon measurements in dwellings of four Saudi Arabian cities.
Al-Tamimi, Natural radioactivity due to radon in Soum region, Jordan.