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Online since: January 2013
Authors: Wen Kang Yan, Xiao Bo Liu
For example, about the relationship between the length of casting zone and the properties, some view within a certain scope, the casting speed, productivity and strip quality can be improved as the increase of casting length.
But the length is affected by roll casting force and diameters of roller, when it comes to a certain value, productivity will no longer change[4].
Another example, the knowledge and results of Fata Hunter and Hydro Test on microstructure and properties of thin-gauge high-speed casting are almost exactly opposite.
As for the aluminum strip samples in different casting process parameters, under conditions of rough grinding, intensive grinding, mechanical polishing and electrochemical polishing and final use of filmer anode technology to make metallographic samples.
The unevenness of deformation along aluminum strip thickness direction is due to the presence of friction in roller surface and aluminum casting strip as well as the deformation caused by the shape factor; at the same time incomplete dynamic recrystallized grains come into being in the outer metal of the aluminum strip.
But the length is affected by roll casting force and diameters of roller, when it comes to a certain value, productivity will no longer change[4].
Another example, the knowledge and results of Fata Hunter and Hydro Test on microstructure and properties of thin-gauge high-speed casting are almost exactly opposite.
As for the aluminum strip samples in different casting process parameters, under conditions of rough grinding, intensive grinding, mechanical polishing and electrochemical polishing and final use of filmer anode technology to make metallographic samples.
The unevenness of deformation along aluminum strip thickness direction is due to the presence of friction in roller surface and aluminum casting strip as well as the deformation caused by the shape factor; at the same time incomplete dynamic recrystallized grains come into being in the outer metal of the aluminum strip.
Online since: August 2013
Authors: Shu Yuan Li, Jian Hua Tao, Lei Yu
The lack of water resources and the deterioration of water environment has become an important restraining factor to the development of society and economy [1,2].
Meanwhile, due to serious over-exploitation of underground water in the basin, serious water pollution problems cross provinces, deterioration of eco-environment, increase of conflicts between resource shortage and regional development water consumption and disputes on water pollution, the economic development in the basin is affected and the effluent sewage discharged into Bohai Bay seriously damages the eco-environment of Bohai Sea waters.
Construction of the integrated management platform of water environment Based on the deep exploitation of information and features of water resources and water environment in the basin and the information technologies such as middleware, database, 3S and numerical simulation and by the exploitation, integration and classification of data resources, an information sharing platform has been developed, which realized the integration and sharing of various information including spatial information of basin, engineering properties, river water quality, rainfall, water quantity and water quality and social economy and based on this, the application system has been developed, which provide business management and decision support for the integrated management processes of water environment in the basin, the system architecture is shown in Fig.1.
Parameter calibration of model. (1) Determination of water quality objective Cs The determination principle of water quality objective generally is to give the corresponding water quality objective and water quality status segment by segment from upstream to downstream of a river and the following factors are considered: I.
A waste load allocation method based on unfairness factors and its application in the Zhangweinan Watershed, northern China[J].
Meanwhile, due to serious over-exploitation of underground water in the basin, serious water pollution problems cross provinces, deterioration of eco-environment, increase of conflicts between resource shortage and regional development water consumption and disputes on water pollution, the economic development in the basin is affected and the effluent sewage discharged into Bohai Bay seriously damages the eco-environment of Bohai Sea waters.
Construction of the integrated management platform of water environment Based on the deep exploitation of information and features of water resources and water environment in the basin and the information technologies such as middleware, database, 3S and numerical simulation and by the exploitation, integration and classification of data resources, an information sharing platform has been developed, which realized the integration and sharing of various information including spatial information of basin, engineering properties, river water quality, rainfall, water quantity and water quality and social economy and based on this, the application system has been developed, which provide business management and decision support for the integrated management processes of water environment in the basin, the system architecture is shown in Fig.1.
Parameter calibration of model. (1) Determination of water quality objective Cs The determination principle of water quality objective generally is to give the corresponding water quality objective and water quality status segment by segment from upstream to downstream of a river and the following factors are considered: I.
A waste load allocation method based on unfairness factors and its application in the Zhangweinan Watershed, northern China[J].
Online since: December 2009
Authors: Dong Ming Guo, Wen Ji Xu, Xu Yue Wang, Ming Kai Lei
Introduction
The shrinkage factor of ceramic parts in the processing of sinter roughcast is up to 20% in size [1].
Their physical factors of Al2O3 ceramic are shown in table 1 for selecting milling parameters.
Table.1 Physical factors of Al2O3 ceramic Ρm (Kg/m 3)))) Mass density Tm (K) Melting point Tg (K) Gasifying point C (J/Kg.K) Specific heat Λ (W/m.K) Thermal conductivity 3970 2353 3253 765 36 Results and Discussions Influence of Laser Power on Milling Quality.
In theory, the surface roughness affects the absorption of materials to Resolidified layer Melted zone boundary laser energy, so milling conditions subsequently change due to different milling layers.
References [1] JIA Z X, AI D M, ZHANG Q H: Materials for Mechanical Engineering.
Their physical factors of Al2O3 ceramic are shown in table 1 for selecting milling parameters.
Table.1 Physical factors of Al2O3 ceramic Ρm (Kg/m 3)))) Mass density Tm (K) Melting point Tg (K) Gasifying point C (J/Kg.K) Specific heat Λ (W/m.K) Thermal conductivity 3970 2353 3253 765 36 Results and Discussions Influence of Laser Power on Milling Quality.
In theory, the surface roughness affects the absorption of materials to Resolidified layer Melted zone boundary laser energy, so milling conditions subsequently change due to different milling layers.
References [1] JIA Z X, AI D M, ZHANG Q H: Materials for Mechanical Engineering.
Online since: April 2024
Authors: F.X. Teddy Badai Samodra, Ferian Yavis Pradika, Sarah Cahyadini
Therefore, applying this illusion approach manipulates the area of the environment, which directly affects the user's living.
Due to industrialization and economic expansion, urbanization significantly affects how a local area's land use and land cover (LULC) are changed.
An illusion applied to an architectural design can directly affect the user.
Shelter, security, and property management serve their fundamental purposes, but only with some interruption or even unrest brought on by conflicts over primacy.
Kalibatiene, "The concept of the ideal indoor environment in multi-attribute assessment of dwelling-houses," Archives of Civil and Mechanical Engineering, vol. 11, no. 1, 2011, doi: 10.1016/S1644-9665(12)60176-9
Due to industrialization and economic expansion, urbanization significantly affects how a local area's land use and land cover (LULC) are changed.
An illusion applied to an architectural design can directly affect the user.
Shelter, security, and property management serve their fundamental purposes, but only with some interruption or even unrest brought on by conflicts over primacy.
Kalibatiene, "The concept of the ideal indoor environment in multi-attribute assessment of dwelling-houses," Archives of Civil and Mechanical Engineering, vol. 11, no. 1, 2011, doi: 10.1016/S1644-9665(12)60176-9
Online since: July 2015
Authors: Mohammed Mumtaz A. Khan
The reason being that no matter how efficient and better quality of fuel we produce, it will always burn ending up in affecting our already endangered levels of breathable environment.
In 1936, PTC was used with steam engine to produce mechanical power.
Solar absorption strongly depends on the uniform distribution and suitable size of the metal inclusions in the dielectric, the particle size orientation, the metal volume fraction, as well as other factors. 5.
Another advantage was that these organic salts can be synthesized to have specific properties desirable for solar application [7].
Therefore, another property of the working fluid is essential, properties like latent heat storage is also to be studied.
In 1936, PTC was used with steam engine to produce mechanical power.
Solar absorption strongly depends on the uniform distribution and suitable size of the metal inclusions in the dielectric, the particle size orientation, the metal volume fraction, as well as other factors. 5.
Another advantage was that these organic salts can be synthesized to have specific properties desirable for solar application [7].
Therefore, another property of the working fluid is essential, properties like latent heat storage is also to be studied.
Online since: June 2015
Authors: R. Unnikrishnan, R. Purushothaman, V.K. Bupesh Raja
These nano fluids exhibit good thermal properties when compared to the conventional fluids due to their possessing more surface area by virtue of existing in nano size.
The van der Waals force among the nano particles affects the stability of the nano fluids.
Properties of Nano fluids: Yu et al observed that by adding 5% of zinc dioxide nano particle to ethylene glycol, there was a 26.5% increase in the thermal conductivity.
Similarly the physical properties of the nano fluid and type of flow and turbulence in the nano movement of the nano particles had less effect on the efficiency of the radiator.
“Preparation and heat transfer properties of nanoparticle-in- transformer oil dispersions as advanced energy efficient coolants”.
The van der Waals force among the nano particles affects the stability of the nano fluids.
Properties of Nano fluids: Yu et al observed that by adding 5% of zinc dioxide nano particle to ethylene glycol, there was a 26.5% increase in the thermal conductivity.
Similarly the physical properties of the nano fluid and type of flow and turbulence in the nano movement of the nano particles had less effect on the efficiency of the radiator.
“Preparation and heat transfer properties of nanoparticle-in- transformer oil dispersions as advanced energy efficient coolants”.
Online since: December 2013
Authors: Abdalfatah A. Shehada, Hisham T. Eid
Physical and mechanical properties of the piles and surrounding rock used in the analysis are shown in Figure 1.
This rate was represented by the factor n that was assigned values of 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, and 0.5.
Analysis and Results Settlement values yielded from the numerical analysis were expressed in terms of the settlement influence factor (Ip) using the following equation (1) Where S = settlement of pile head under a vertical load Q and D = pile diameter.
Fig.2 Finite element mesh used Fig.3 Effect of the element size on pile settlement in the analysis determined using the FE analysis Fig.4 Effect of changing in n on the value of Ip for constant Ep/E0 The settlement influence factors calculated in the current study are shown in Figure 5 as a function of n, Ep/E0, and L/D.
Increasing pile slenderness ratios to values greater than a critical one, (L/D)c, does not affect the pile head settlement since a small portion of load reaches the pile lower end.
This rate was represented by the factor n that was assigned values of 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, and 0.5.
Analysis and Results Settlement values yielded from the numerical analysis were expressed in terms of the settlement influence factor (Ip) using the following equation (1) Where S = settlement of pile head under a vertical load Q and D = pile diameter.
Fig.2 Finite element mesh used Fig.3 Effect of the element size on pile settlement in the analysis determined using the FE analysis Fig.4 Effect of changing in n on the value of Ip for constant Ep/E0 The settlement influence factors calculated in the current study are shown in Figure 5 as a function of n, Ep/E0, and L/D.
Increasing pile slenderness ratios to values greater than a critical one, (L/D)c, does not affect the pile head settlement since a small portion of load reaches the pile lower end.
Online since: April 2012
Authors: Leonid Klinger, Eugen Rabkin
In many technological applications thin metal films are deposited on, or covered by a thin film of another metallic material (i.e. diffusion barriers in microelectronics, or thin film multilayers exhibiting desired functional properties [1]).
It modifies the internal stresses, which, in turn, affect the GB diffusion.
The factor kT has its standard thermodynamic meaning.
Our model clearly demonstrates that in binary and multicomponent thin film systems the chemical contribution to the Gibbs free energy plays an important role in determining the mechanical stresses in the system.
Though the Authors of Ref. [11] named the GB interdiffusion as one of the possible reasons for tensile stress generation, the fact that tensile stresses were increasing both on the Cu and on the Ni side means that some other factors are contributing to stress evolution (i.e. grain growth or excess vacancy annihilation in the layers).
It modifies the internal stresses, which, in turn, affect the GB diffusion.
The factor kT has its standard thermodynamic meaning.
Our model clearly demonstrates that in binary and multicomponent thin film systems the chemical contribution to the Gibbs free energy plays an important role in determining the mechanical stresses in the system.
Though the Authors of Ref. [11] named the GB interdiffusion as one of the possible reasons for tensile stress generation, the fact that tensile stresses were increasing both on the Cu and on the Ni side means that some other factors are contributing to stress evolution (i.e. grain growth or excess vacancy annihilation in the layers).
Online since: November 2018
Authors: Sufizar Ahmad, Hamimah Abdul Rahman, Khalid Saluiman Abdallah, Andanastuti Muchtar, Siti Fairus Mohammad
This research studied the influence of carbonate in composite electrolyte, SDCc towards the composite cathode properties.
Structure and electrochemical properties of Sm0.5Sr0.5Co1−xFexO3−δ cathodes for solid oxide fuel cells.
Structure and thermal properties of La0.6Sr0.4Co0.2Fe0.8O3−δ–SDC carbonate composite cathodes for intermediate- to low-temperature solid oxide fuel cells.
Diversification Studies on Samarium Strontium Cobaltite Regarding Thermal & Structural Properties as Based Composite Cathode of SOFC, Materials Science Forum, 888(2017) 162–166
Influence of Calcination on the Properties of Nickel Oxide- Samarium Doped Ceria Carbonate ( NiO-SDCC ) Composite Anodes, 19(2016)267–274
Structure and electrochemical properties of Sm0.5Sr0.5Co1−xFexO3−δ cathodes for solid oxide fuel cells.
Structure and thermal properties of La0.6Sr0.4Co0.2Fe0.8O3−δ–SDC carbonate composite cathodes for intermediate- to low-temperature solid oxide fuel cells.
Diversification Studies on Samarium Strontium Cobaltite Regarding Thermal & Structural Properties as Based Composite Cathode of SOFC, Materials Science Forum, 888(2017) 162–166
Influence of Calcination on the Properties of Nickel Oxide- Samarium Doped Ceria Carbonate ( NiO-SDCC ) Composite Anodes, 19(2016)267–274
Online since: February 2014
Authors: Lin Xu
Meanwhile,each university’s financial factor concerned in our model,we numeralize the whole property as the financial factor : the financial factor act as financial weight when concerning the resourse distribution.
(8) Among all the standards of building a cloud digital library we first puts forward multi-reduntancy standards,that’s just under the constain of formula (5) each kind of resourse’s redundancy no less than 2,only under this can solve the problem of how can obtain fault tolerance working after individual database collapsed.Formula (6) puts a strong constaint to solve how to distribute mission when datebase update condition meets and open the switchs to refresh the datebase redundancy degree.After analysis each feild ,we use condition constraint (8) to guide the data updata,the detail meaning it’s: Calculate each subjuct of each university impact factor (7) plus focus degree paramteer,then multiply financial factor .We chose the three bigest results to judge which university to refresh the database of a centain feild.
Note:in condition (7),we adopt the idea that if total cloud con’t meet the requirements ,the expanion should be executed .We first puts forward the idea,due to already take the fnancial factor and other factors into consideration ,it’s inpossible to integrate all the individual clouds,but this dosen’t affect the integritty of reginnal cloud ,here we use a kind of feedback idea to complete the total cloud redundancy.
to support perfect services,here we puts several user interface service model which is a necessary condition of integrate between different units and it is also consider under conprehensive safety and the updata factor in the model.
Design of Electrical/Mechanical Hybrid 4-Redundancy Brushless DC Torque Motor[J].
(8) Among all the standards of building a cloud digital library we first puts forward multi-reduntancy standards,that’s just under the constain of formula (5) each kind of resourse’s redundancy no less than 2,only under this can solve the problem of how can obtain fault tolerance working after individual database collapsed.Formula (6) puts a strong constaint to solve how to distribute mission when datebase update condition meets and open the switchs to refresh the datebase redundancy degree.After analysis each feild ,we use condition constraint (8) to guide the data updata,the detail meaning it’s: Calculate each subjuct of each university impact factor (7) plus focus degree paramteer,then multiply financial factor .We chose the three bigest results to judge which university to refresh the database of a centain feild.
Note:in condition (7),we adopt the idea that if total cloud con’t meet the requirements ,the expanion should be executed .We first puts forward the idea,due to already take the fnancial factor and other factors into consideration ,it’s inpossible to integrate all the individual clouds,but this dosen’t affect the integritty of reginnal cloud ,here we use a kind of feedback idea to complete the total cloud redundancy.
to support perfect services,here we puts several user interface service model which is a necessary condition of integrate between different units and it is also consider under conprehensive safety and the updata factor in the model.
Design of Electrical/Mechanical Hybrid 4-Redundancy Brushless DC Torque Motor[J].