Sort by:
Publication Type:
Open access:
Publication Date:
Periodicals:
Search results
Online since: November 2006
Authors: Jin Ho Kim, Sin Chu Yang
Fig. 6
and 7 show demand curves for the 10% / 50 years El Centro earthquake and 2% / 50 years Loma
Prieta earthquake
Fig. 6 shows the CDM plot of the RCF subjected to the 10% / 50 yrs El Centro earthquake with performance criteria.
The structural performance is the CP stage for the 10% / 50 yrs El Centro earthquake.
The performance of the RCF is in the CP stage for the 10% / 50 years El Centro earthquake.
M. et al.: Simplified inelastic response evaluation using composite spectra, Earthquake Spectra, vol. 5(3), pp. 571-590, 1994
Fig. 6 shows the CDM plot of the RCF subjected to the 10% / 50 yrs El Centro earthquake with performance criteria.
The structural performance is the CP stage for the 10% / 50 yrs El Centro earthquake.
The performance of the RCF is in the CP stage for the 10% / 50 years El Centro earthquake.
M. et al.: Simplified inelastic response evaluation using composite spectra, Earthquake Spectra, vol. 5(3), pp. 571-590, 1994
Online since: December 2016
Authors: Mstislav O. Makeev, Sergey A. Meshkov, Yury A. Ivanov
In the El-Mellouhi et al. work [16] it is shown that the prevalence of a charge state of gallium vacancies is determined by the temperature and the position of the Fermi level (Fig. 2).
To our mind, the most typical are the following Al and Si diffusion coefficients in GaAs (Fig. 3): - Bracht et al. [19], where Ea = 3,5 eV, D0 = 0,17 cm2/s; - Wee et al. [20], where Ea = 3,6 eV, D0 = 0,2 cm2/s; - Tan et al. [14], where Ea = 4,98 eV, D0 = 5,2·105 cm2/s, and [15], where Ea = 3,91 eV, D0 = 6,77·104 cm2/s (Si out-diffusion case).
Temperature dependence of Al and Si diffusion coefficient in intrinsic GaAs.
El.
El-Mellouhi and N.
To our mind, the most typical are the following Al and Si diffusion coefficients in GaAs (Fig. 3): - Bracht et al. [19], where Ea = 3,5 eV, D0 = 0,17 cm2/s; - Wee et al. [20], where Ea = 3,6 eV, D0 = 0,2 cm2/s; - Tan et al. [14], where Ea = 4,98 eV, D0 = 5,2·105 cm2/s, and [15], where Ea = 3,91 eV, D0 = 6,77·104 cm2/s (Si out-diffusion case).
Temperature dependence of Al and Si diffusion coefficient in intrinsic GaAs.
El.
El-Mellouhi and N.
Online since: June 2021
Authors: Abdelyamine Boukhobza, Kamel Fedaoui, Mohammed Said Boutaani, Amor Bourebbou, Laid Chaibainou
First we started with determining the RVE size by Kanit approach cited in [13], Djebara in [15] and El Moumen et al. in [17-19] imposing two boundary conditions, KUBC and periodic.
El Moumen, T.
El Moumen, A.
El Moumen, T.
El Moumen, T.
El Moumen, T.
El Moumen, A.
El Moumen, T.
El Moumen, T.
Online since: March 2014
Authors: Fei Deng, Yan Xiong
Using the fitting curves of the OLEDs’ electroluminescent (EL) characteristics, RGBW four-primary display is clearly shown to be more energy efficient than traditional RGB three-primary display, especially as the efficiency of the OLEDs is getting higher.
In this work, we present a novel method to characterize the display performance over the whole color space utilizing the fitting curves of the OLEDs’ electroluminescent (EL) characteristics based on the experimental data of a real device, and the advantage of this novel four-primary displays can be clearly understood.
An efficient white emitting polymer OLED device is fabricated whose configuration is ITO/PEDOT/PVK:OXD-7:Firpci:Ir(piq)/Ba/Al, its J-V-L characteristics is shown in Fig.1, and the CIE coordinates of the EL device is (0.33, 0.36) which is very close to those of HDTV D65 white light.
Current density (J) -operation voltage (V)- luminance (L) characteristics of fabricated white PLEDs, the device configuration is ITO/PEDOT/PVK:OXD-7:Firpci: Ir(piq)/Ba/Al.
In this work, we present a novel method to characterize the display performance over the whole color space utilizing the fitting curves of the OLEDs’ electroluminescent (EL) characteristics based on the experimental data of a real device, and the advantage of this novel four-primary displays can be clearly understood.
An efficient white emitting polymer OLED device is fabricated whose configuration is ITO/PEDOT/PVK:OXD-7:Firpci:Ir(piq)/Ba/Al, its J-V-L characteristics is shown in Fig.1, and the CIE coordinates of the EL device is (0.33, 0.36) which is very close to those of HDTV D65 white light.
Current density (J) -operation voltage (V)- luminance (L) characteristics of fabricated white PLEDs, the device configuration is ITO/PEDOT/PVK:OXD-7:Firpci: Ir(piq)/Ba/Al.
Online since: February 2006
Authors: Jin Ho Bae, Roumen H. Petrov, Ki Bong Kang, Leo A.I. Kestens, Orlando León García
., Mekelweg 2, 2628 AL Delft The Nederlands
3 POSCO 1,Goedong-dong, Nam-gu, Pohang, Gyeongbuk 790-785, Korea, Pohang P.O.Box 36
a
Orlando.LeonGarcia@UGent.be, bRoumen.Petrov@ugent.be,
c L.A.I.Kestens@tnw.tudelft. nl
Keywords: toughness, modeling, in-plane anisotropy, microstructure, texture, X80 pipeline steel
Abstract.
A linear regression model was used by Pickering et al. [1] to predict the ductile-to-brittle transition temperature as a function of chemical composition and microstructure.
The upper and lower shelf energy (EU and EL respectively) are given by: ∑ ∑ = = = U U n i i n i ii U S S E E 1 2 1 2 1 , ∑ ∑ = = = L L n i i n i ii L S S E E 1 2 1 2 1
(1) where, EU is the upper shelf energy, EL is the lower shelf energy, Ei is the average value for the group i of samples tested at the same temperature, and Si2 is the variance for each group i.
These five parameters, EU, EL, m, k and T0 define completely the transition curve in the Todinov model.
A linear regression model was used by Pickering et al. [1] to predict the ductile-to-brittle transition temperature as a function of chemical composition and microstructure.
The upper and lower shelf energy (EU and EL respectively) are given by: ∑ ∑ = = = U U n i i n i ii U S S E E 1 2 1 2 1 , ∑ ∑ = = = L L n i i n i ii L S S E E 1 2 1 2 1
(1) where, EU is the upper shelf energy, EL is the lower shelf energy, Ei is the average value for the group i of samples tested at the same temperature, and Si2 is the variance for each group i.
These five parameters, EU, EL, m, k and T0 define completely the transition curve in the Todinov model.
Online since: January 2012
Authors: S.C. Sharma, S.V.S. Narayana Murty, Alok Agarwal, Niraj Nayan, P.P. Sinha
Processing and Characterization of Al-Cu-Mg Alloy Rivets for Aerospace Applications
Niraj Nayan a S.V.S.
Sinha e Materials and Mechanical Entity, Vikram Sarabhai Space Center, Trivandrum-695 022 ametnayan@gmail.com, bsusarla.murty@gmail.com, alok_agarwal@vssc.gov.in, dsc_sharma@vssc.gov.in, epp_sinha@vssc.gov.in Keywords: Rivets, Al-Cu-Mg alloy, V65 aluminium alloy, microstructure, wire drawing Abstract: Al-Cu-Mg (Russian grade V65) alloys are used for riveting applications in aerospace industries due to their relatively high shear strength of the order of 25 kg/mm2 combined with a high plasticity.
The average composition of the billet is Al-4.1Cu-0.21 Mg-0.45Mn with Fe and Si each 0.13 max.
(MPa) % El Shear Strength (MPa) Condition 253 212 16.4 165 As drawn 415 254 30.5 275 Solution treated 418 256 29 292 T6 The wires processed from 9mm dia rods with and without intermittent annealing have been tested for their mechanical properties along the length of the rods.
(MPa) % El Shear Strength (MPa) Remark 424 270 27 281 Without intermittent anneal 423 264 26.5 274 With intermittent anneal Figure- 2 shows the microstructure a of the sample taken from 6mm dia. wire along the and across the wire drawing directions.
Sinha e Materials and Mechanical Entity, Vikram Sarabhai Space Center, Trivandrum-695 022 ametnayan@gmail.com, bsusarla.murty@gmail.com, alok_agarwal@vssc.gov.in, dsc_sharma@vssc.gov.in, epp_sinha@vssc.gov.in Keywords: Rivets, Al-Cu-Mg alloy, V65 aluminium alloy, microstructure, wire drawing Abstract: Al-Cu-Mg (Russian grade V65) alloys are used for riveting applications in aerospace industries due to their relatively high shear strength of the order of 25 kg/mm2 combined with a high plasticity.
The average composition of the billet is Al-4.1Cu-0.21 Mg-0.45Mn with Fe and Si each 0.13 max.
(MPa) % El Shear Strength (MPa) Condition 253 212 16.4 165 As drawn 415 254 30.5 275 Solution treated 418 256 29 292 T6 The wires processed from 9mm dia rods with and without intermittent annealing have been tested for their mechanical properties along the length of the rods.
(MPa) % El Shear Strength (MPa) Remark 424 270 27 281 Without intermittent anneal 423 264 26.5 274 With intermittent anneal Figure- 2 shows the microstructure a of the sample taken from 6mm dia. wire along the and across the wire drawing directions.
Online since: August 2019
Authors: G.V. Preetham Kumar, B.N. Anjan
Abou El-khair et al. [7] studied the performance of cast ZrO2, SiC, or C reinforced ZA27 composites.
Acceptable limit of porosity level is a maximum of 4 % was reported by Alaneme et al. [15] for cast aluminum MMCs.
Abou El-khaira, A.
El-Sheikh, Mater.
[17] Rahman H, and Al H.
Acceptable limit of porosity level is a maximum of 4 % was reported by Alaneme et al. [15] for cast aluminum MMCs.
Abou El-khaira, A.
El-Sheikh, Mater.
[17] Rahman H, and Al H.
Online since: July 2011
Authors: Donato Cancellara, Mario Pasquino
As seismic actions, have been adopted the following registrations: an anomalous earthquakes for intensity and in particular El Centro earthquake (N00W component, 1940) with different amplification factors; an anomalous earthquake for frequency content and in particular Erzincan earthquake (N90W component, 1992).
The HDHSI device is in contrast with R-FBI (Resilient-Friction Base Isolation) isolator proposed by Mostaghel et al. (1987) and wants to be an optimization of EDF (stands for one of two companies – Electricité De France) system proposed by Gueraud et al. (1985).
The seismic response has been studied by considering the following seismic events: El Centro - California (component N00W, 1940) and Erzincan - Turkey (component N90W, 1992).
In particular, referring to the El Centro earthquake (seismic event compatible to SLC provided by D.M. 14.01.2008) amplification factors =1.5 e 2.0 has been used, in order to consider anomalous seismic events for intensity.
Power Spectral Density El Centro (component N00W, 1940).
The HDHSI device is in contrast with R-FBI (Resilient-Friction Base Isolation) isolator proposed by Mostaghel et al. (1987) and wants to be an optimization of EDF (stands for one of two companies – Electricité De France) system proposed by Gueraud et al. (1985).
The seismic response has been studied by considering the following seismic events: El Centro - California (component N00W, 1940) and Erzincan - Turkey (component N90W, 1992).
In particular, referring to the El Centro earthquake (seismic event compatible to SLC provided by D.M. 14.01.2008) amplification factors =1.5 e 2.0 has been used, in order to consider anomalous seismic events for intensity.
Power Spectral Density El Centro (component N00W, 1940).