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Online since: January 2016
Authors: Dario Grossi, Pasquale Guglielmi, Vito Piglionico, Antonio Piccininni, Gianfranco Palumbo, Donato Sorgente, Luigi Tricarico
Results were used as reference data for an inverse analysis based on the height evolution of the dome.
For example, Qu et. al. used a hybrid optimization technique based on the genetic algorithm (GA) using tensile tests data for the material parameters identification of a Ti-6Al-4V alloy [8].
The choice of the experimental data to be used as reference and the design of the objective function(s) have to be done with extreme care.
Strain [-] Equiv. mean strain rate [s-1] 0.5 0.18* greater than 45.0 1.715* 1.96x10-4* 1.0 0.10 39.6 2.303 9.02x10-4 1.5 0.13 35.6 2.040 1.73x10-3 *the specimen touched the die cavity bottom (45 mm deep) without failure If decreasing the gas pressure, a correspondent strain rate reduction is obtained, which can be related to the increase of the maximum dome height.
For example, Qu et. al. used a hybrid optimization technique based on the genetic algorithm (GA) using tensile tests data for the material parameters identification of a Ti-6Al-4V alloy [8].
The choice of the experimental data to be used as reference and the design of the objective function(s) have to be done with extreme care.
Strain [-] Equiv. mean strain rate [s-1] 0.5 0.18* greater than 45.0 1.715* 1.96x10-4* 1.0 0.10 39.6 2.303 9.02x10-4 1.5 0.13 35.6 2.040 1.73x10-3 *the specimen touched the die cavity bottom (45 mm deep) without failure If decreasing the gas pressure, a correspondent strain rate reduction is obtained, which can be related to the increase of the maximum dome height.
Online since: September 2014
Authors: Juan Alfredo Guevara Carrió, Marcelo Carvalhal, Claudia R. da Silveira, Terezinha J. Masson, Waldemar Alfredo Monteiro
Data of x-ray diffraction of polycrystalline samples were collected with a conventional Difractometer.
The first one of the advantages is the cost reduction.
Results and Discussion The Table 2 resume some data realized until now with the samples of copper nickel-aluminum alloys concerning mixing, compacting, sintering, homogenizing treatments and also values of hardness and electrical conductivity.
The powder diffraction data indicate that the utilized amounts of dopants do not distorted the copper matrix structure significantly.
The first one of the advantages is the cost reduction.
Results and Discussion The Table 2 resume some data realized until now with the samples of copper nickel-aluminum alloys concerning mixing, compacting, sintering, homogenizing treatments and also values of hardness and electrical conductivity.
The powder diffraction data indicate that the utilized amounts of dopants do not distorted the copper matrix structure significantly.
Online since: June 2011
Authors: Bourmada Noureddine, Abdelmoumene Money
.¶
Manufacturing cement as it is the case for many industrial materials, consumes a considerable quantity of energy, generates the emission of significant quantities of gas for purpose of greenhouse, contributes to the progressive exhaustion of the natural resources and involves the production of certain residues which one must eliminate; ¶the data inputs are illustrated by Fig. 2, 3, and 4.¶
Fig. 2, 3, 4 : Inputs of Cement Industry
Figure 5 illustrates application LCA for the Ain-Touta cement factory at the various stages of the manufacturing process of cement and which shows local, regional and total impacts coming from the inputs and outputs from each phase from the manufacturing process.
Besides, the weak points of every evaluation can be exactly improved and determined for the causes investigation two strategies are possible by the LCA: an analysis based on the inventory and the other one based on the impact, that is the inventory of the data based on the factors of emissions of air emissions; these refusals (discharges) are calculated from one of the empirical relations valid for the emissions of gases datum in a general way by [8,9,10]: Emissions i = FEi x Q cement (1) what allows to have the foreseen impact, the category and the group of impact (Figure7); where: i = indication represents CO2, NOx, SO2 or Dust; FEi: factor of emission of every pollutant; Q: produced Quantity of cement .
¶It is of many interests such as:¶ makes it possible to have a global vision of the environmental impact to envisage the displacement of pollution, to evaluate which type of environmental impact is dominating in the realization of a product and which stages or which particular elements of the product contribute more in term of environmental impacts.¶ It is also a very useful tool to make choices as much as total range is concerned choice of an environmental policy, like the interest of the recycling of certain product, that local (choice of design and production for a product).¶ However many obstacles make analysis of the cycle of life limited, because it is quasi impossible to obtain the entirety of the flows used for a product, it is thus necessary to be satisfied with sometimes limited imprecise data.¶ Also the difficulty of the geographical representativeness arises, the impacts being different from an area to an another .
¶Consequently, often a LCA is not transportable.¶ The analysis of each stage of life of the manufacture of cement makes it possible to draw the conclusions as for the effect of the methods of manufacture by indicating the places or stages where to act to return material or the method of implementation more compatible with the objectives of the sustainable development.¶ This study enables us to show the importance of LCA which must relate to the whole of the life cycle the products; ¶to direct the process of current development towards durability; ¶to improve the environmental performance of the companies which use it by reduction of the effluents at the source and the consumption of resources.¶ References [1] S.
Besides, the weak points of every evaluation can be exactly improved and determined for the causes investigation two strategies are possible by the LCA: an analysis based on the inventory and the other one based on the impact, that is the inventory of the data based on the factors of emissions of air emissions; these refusals (discharges) are calculated from one of the empirical relations valid for the emissions of gases datum in a general way by [8,9,10]: Emissions i = FEi x Q cement (1) what allows to have the foreseen impact, the category and the group of impact (Figure7); where: i = indication represents CO2, NOx, SO2 or Dust; FEi: factor of emission of every pollutant; Q: produced Quantity of cement .
¶It is of many interests such as:¶ makes it possible to have a global vision of the environmental impact to envisage the displacement of pollution, to evaluate which type of environmental impact is dominating in the realization of a product and which stages or which particular elements of the product contribute more in term of environmental impacts.¶ It is also a very useful tool to make choices as much as total range is concerned choice of an environmental policy, like the interest of the recycling of certain product, that local (choice of design and production for a product).¶ However many obstacles make analysis of the cycle of life limited, because it is quasi impossible to obtain the entirety of the flows used for a product, it is thus necessary to be satisfied with sometimes limited imprecise data.¶ Also the difficulty of the geographical representativeness arises, the impacts being different from an area to an another .
¶Consequently, often a LCA is not transportable.¶ The analysis of each stage of life of the manufacture of cement makes it possible to draw the conclusions as for the effect of the methods of manufacture by indicating the places or stages where to act to return material or the method of implementation more compatible with the objectives of the sustainable development.¶ This study enables us to show the importance of LCA which must relate to the whole of the life cycle the products; ¶to direct the process of current development towards durability; ¶to improve the environmental performance of the companies which use it by reduction of the effluents at the source and the consumption of resources.¶ References [1] S.
Online since: January 2005
Authors: M.Tadayon Saidi, N. Baghersaie, N. Varahram
The results indicate that replacing of forged steel with ADI due to lower cost production and
reduction in weight is possible if the correct tolerance were selected.
Keough" Austempered Ductile Iron ", Ductile Iron Data for Design Engineers SECTION IV, August 1998, Updated 02/12/04. 6.
Keough" Austempered Ductile Iron ", Ductile Iron Data for Design Engineers SECTION IV, August 1998, Updated 02/12/04. 6.
Online since: July 2015
Authors: V.A. Kulbachinskii, Leonid N. Oveshnikov, Boris A. Aronzon
The negative magnetoresistance was observed at low T due to the reduction of the spin-flip scattering by aligning spins in magnetic field.
In Fig. 4 we plotted data on the magnetoresistance for structures 2 and 4 at different temperatures.
In Fig. 4 we plotted data on the magnetoresistance for structures 2 and 4 at different temperatures.
Online since: October 2014
Authors: Peng Fei Ren, Shi Yong Geng
Research on Electric Vehicle Motor Control Technology Based on Non-Sensor
Ren Pengfei 1, Geng Shiyong 2
1 Henan Institute of Engineering, Zhengzhou City, Henan Province 450007 China
2 School of Electric And Information Engineer, Zhongyuan University of Technology, Zhengzhou City, Henan Province 450007 China
Keywords: Electric Vehicle; Non-Sensor Technology; Permanent Magnet Synchronous Motor;
Abstract: In the concept of energy-saving, emission reduction and green environmental protection idea, electric cars emerge as the times require.
Research status of non sensor technology Sensorless technology specifically refers to the mathematical model of the motor and the detected motor current, voltage and other data, to estimate the rotor position of motor.
Research status of non sensor technology Sensorless technology specifically refers to the mathematical model of the motor and the detected motor current, voltage and other data, to estimate the rotor position of motor.
Online since: January 2011
Authors: Li Ma, Ke Chao Zhou, Lei Zhang, Zhi You Li
The effects of grain size reduction and preferred orientation on the oxidation behavior in air at 600°C and 960°C of Ni coatings were investigated respectively.
Therefore, our aim was to obtain some experimental data and observations for the oxidation of electrodeposited nickel coatings at the low (600°C) and high temperature (960°C), respectively.
Therefore, our aim was to obtain some experimental data and observations for the oxidation of electrodeposited nickel coatings at the low (600°C) and high temperature (960°C), respectively.
Online since: May 2013
Authors: Bo Jiang, Xiao Yang
China government set the emissions-reduction targets in various industries on the 12th Five-Year Plan.
In the field of airplane carbon emission calculation, Brandon M.Graver and H.Christopher Frey has created an airliner emissions inventory for Raleigh-Durham International Airport, based on landing and take-off data for commercial passenger air carriers[3].
In the field of airplane carbon emission calculation, Brandon M.Graver and H.Christopher Frey has created an airliner emissions inventory for Raleigh-Durham International Airport, based on landing and take-off data for commercial passenger air carriers[3].
Online since: June 2015
Authors: Azlan Abdul Aziz, Bashiru Kayode Sodipo
The composite nanoparticles were prepared via sonochemical assisted reduction of gold precursor and deposition of gold nanoparticles (GNP) on amine functionalized SPMN.
From the XRD pattern in Fig 1a, the prominent peaks of magnetite nanoparticles compared with the standard JCPDS 5-0664 of International Centre for Diffraction Data were observed.
From the XRD pattern in Fig 1a, the prominent peaks of magnetite nanoparticles compared with the standard JCPDS 5-0664 of International Centre for Diffraction Data were observed.
Online since: May 2022
Authors: Sri Juari Santosa, Nuryono Nuryono, Bambang Purnomo, Agus Istiawan, Agnesya Putri Gustianthy, Siska Pebriani, Dwi Indriyani
Another rheological parameter (yield point to plastic viscosity ratio, μP/μV) was determined based on the viscosity data.
According to Eq. 1, the μP is obtained from viscosity reduction at 600 and 300 r/min, while the μP is obtained from the reduction of μv with a viscosity at 300 r/min.
Based on the data for the absorption peaks, it can be concluded that SA and CMC interact with BWB, indicating an increase in the absorption of water molecules and keeping them in the montmorillonite structure.
According to Eq. 1, the μP is obtained from viscosity reduction at 600 and 300 r/min, while the μP is obtained from the reduction of μv with a viscosity at 300 r/min.
Based on the data for the absorption peaks, it can be concluded that SA and CMC interact with BWB, indicating an increase in the absorption of water molecules and keeping them in the montmorillonite structure.