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Online since: December 2010
Authors: Yong Jian Liu, Shi Hua Liang, Jia Wu Wu, Na Fu
By comprehensively analyzing the main factors affecting vertical ultimate bearing capacity of single pile, a prediction model of Support Vector Machine (SVM), which discusses the nonlinear relationship between vertical ultimate bearing capacity of single pile and influencing factors and analyzes the parameters on the performance of the model through sample knowledge learning, is established in this paper.
It is affected by numerous factors, moreover, there exists high degree of complexity and nonlinear relationship between the bearing capacity of single pile and various factors.
As a non-linear dynamic system, artificial neural networks, which can fully take various factors affecting the pile behavior into account, has been applied to predict bearing capacity of single pile.
In generally, index of physical mechanical properties of soil, which is easily obtained from test, can be used as evaluation index.
Conclusions Vertical ultimate bearing capacity of single pile is affected by numerous factors, moreover, there exists high degree of complexity and nonlinear relationship between the bearing capacity and factors.
It is affected by numerous factors, moreover, there exists high degree of complexity and nonlinear relationship between the bearing capacity of single pile and various factors.
As a non-linear dynamic system, artificial neural networks, which can fully take various factors affecting the pile behavior into account, has been applied to predict bearing capacity of single pile.
In generally, index of physical mechanical properties of soil, which is easily obtained from test, can be used as evaluation index.
Conclusions Vertical ultimate bearing capacity of single pile is affected by numerous factors, moreover, there exists high degree of complexity and nonlinear relationship between the bearing capacity and factors.
Online since: May 2014
Authors: Juan Zhang, Jiang Yu, Pei Liu, Liang Yan Jiang
A proper resin matrix is a kind of organic polymer which has lower infrared absorptivity and good physical and mechanical properties.
According to their cost performance and optical property as well as other factors, the metal Al with high performance and low cost is usually used.
Emissivity is one of the thermophysical properties of an object.
In addition, the coating thickness also affects the infrared radiation property.
It should be noted that such factors as types, content, and shape of pigment may make the influence of the thickness not significant.
According to their cost performance and optical property as well as other factors, the metal Al with high performance and low cost is usually used.
Emissivity is one of the thermophysical properties of an object.
In addition, the coating thickness also affects the infrared radiation property.
It should be noted that such factors as types, content, and shape of pigment may make the influence of the thickness not significant.
Online since: June 2014
Authors: Wei Liu, Xiao Hong Chen, Jun Wang
Confirmation for Coal Mine Gas Accident Risk Factors
Because each disaster risk degree is influenced by many factors.
Thus people must analysis and evaluation the affect factors of the gas, so as to determine the safety (dangerous) degree of the mine, which make the enterprise management and production personnel to accomplish know fairly well and targeted to take preventive measures in the production process.
In this paper, the main factors that affect the gas accident hazard are identified as 9 major categories evaluation project, and each project is divided into three or four categories, the total of 31 categories.
Hazards are multi-factor fuzzy comprehensive evaluation to the gas Determine the collection of evaluation gas risk factors.
Need for the two individual risk factors in safety investment in order to improve the safety level.
Thus people must analysis and evaluation the affect factors of the gas, so as to determine the safety (dangerous) degree of the mine, which make the enterprise management and production personnel to accomplish know fairly well and targeted to take preventive measures in the production process.
In this paper, the main factors that affect the gas accident hazard are identified as 9 major categories evaluation project, and each project is divided into three or four categories, the total of 31 categories.
Hazards are multi-factor fuzzy comprehensive evaluation to the gas Determine the collection of evaluation gas risk factors.
Need for the two individual risk factors in safety investment in order to improve the safety level.
Online since: June 2019
Authors: Jian Lin Xu, Lei Niu, Xiao Qi Liu, Zhou Chen, Cheng Hu Kang
Among them, the affecting factors of mechanical properties of the particle/polymer composites are mainly the particle size, filling amount, surface characteristics and dispersion in the polymer.
Impact Properties.
Conclusion (1) The addition of Sb2O3 particles can improve the tensile properties, impact properties and crystallization properties of PP
Li, Mechanical and thermal properties of nano-SiO2/PA66 composites, Acta.
Wang, Investigation on the mechanical properties of nano-TiO2/PP composites, Acta.
Impact Properties.
Conclusion (1) The addition of Sb2O3 particles can improve the tensile properties, impact properties and crystallization properties of PP
Li, Mechanical and thermal properties of nano-SiO2/PA66 composites, Acta.
Wang, Investigation on the mechanical properties of nano-TiO2/PP composites, Acta.
Online since: May 2023
Authors: Laire Tier, Te Li
The research shows that the water absorption effect of brick powder and the friction force are the two main factors affecting concrete.
(1) Slump test and rheology research shows that the water absorption effect of brick powder, as well as sassafras force, are the two main factors affecting the concrete
Li, Preparation, Properties and Microstructure of Non-Calcination Rock Powder Brick with Orthogonal Experiments, APPL.
Hu, Effect of Recycled Composite Micro-powder on Mechanical Properties and Microstructure of Concrete, J.
Szelag, Intelligent prediction modeling of the post-heating mechanical performance of the brick powder modified cement paste based on the cracking patterns properties, Case Stud.
(1) Slump test and rheology research shows that the water absorption effect of brick powder, as well as sassafras force, are the two main factors affecting the concrete
Li, Preparation, Properties and Microstructure of Non-Calcination Rock Powder Brick with Orthogonal Experiments, APPL.
Hu, Effect of Recycled Composite Micro-powder on Mechanical Properties and Microstructure of Concrete, J.
Szelag, Intelligent prediction modeling of the post-heating mechanical performance of the brick powder modified cement paste based on the cracking patterns properties, Case Stud.
Online since: March 2010
Authors: Hsiang Chen Hsu, Wei Yao Chang
The determined accurate material properties can then be applied to
finite element analysis (FEA) for further reliability studies.
The tensile mechanical property on the entire bonding wire varies from the FAB to HAZ and to as-drawn wire.
Thermal effects (25, 125 and 200O C) on material properties are taken into account.
Fig.8 Tensile mechanical property for 2 nd EFO wire.
Table 1 Mechanical properties for as-drawn wire, EFO wire and 2nd EFO wire.
The tensile mechanical property on the entire bonding wire varies from the FAB to HAZ and to as-drawn wire.
Thermal effects (25, 125 and 200O C) on material properties are taken into account.
Fig.8 Tensile mechanical property for 2 nd EFO wire.
Table 1 Mechanical properties for as-drawn wire, EFO wire and 2nd EFO wire.
Online since: November 2013
Authors: Issa Sobhani, Mahdiye Ijavi, Zoya Sadighi, Abolghasem Ataie
VSM results showed that the magnetic properties of the nickel/Ba-hexaferrite nano-composite were affected by the process conditions.
Generally, a combination of different factors affect Hc during the milling time, such as internal micro strain, impurities, pores, defects [11], as well as decomposition of Ba-hexaferrite into magnetic phase.
Kulkarni, Synthesis and magnetic properties of barium–calcium hexaferrite particles prepared by sol–gel and microemulsion techniques, J.
Ki, J.Kim, Synthesis and magnetic properties of nano Ba_hexaferrite/NiZn ferrite composites, Phys.
Chermahini, Investigation of nanostructure formation mechanism and magnetic properties in Fe45Co45Ni10 system synthesized by mechanical alloying, Powder Technol, 2012
Generally, a combination of different factors affect Hc during the milling time, such as internal micro strain, impurities, pores, defects [11], as well as decomposition of Ba-hexaferrite into magnetic phase.
Kulkarni, Synthesis and magnetic properties of barium–calcium hexaferrite particles prepared by sol–gel and microemulsion techniques, J.
Ki, J.Kim, Synthesis and magnetic properties of nano Ba_hexaferrite/NiZn ferrite composites, Phys.
Chermahini, Investigation of nanostructure formation mechanism and magnetic properties in Fe45Co45Ni10 system synthesized by mechanical alloying, Powder Technol, 2012
Online since: June 2005
Authors: Yu Jin Kim, Seong Jin Hwang, Hyung Sun Kim
The advantages of using a glass-ceramic include shape
stability during the sintering stage, improved dielectric properties, mechanical strength, and
controlled thermal expansivity.
The advantages offered by this approach include shape stability after the sintering, improved dielectric properties, mechanical strength, and controlled thermal expansivity [7,8].
The microwave dielectric properties of glass-ceramic were measured by a network analyzer (8720Es, Agilent, USA) at 6-8 GHz.
The highest value on relative, apparent densities and shrinkage at 850-900℃ can critically affect other properties such as dielectric properties.
At 750℃, the quality factor was lower than the others because the remaining amorphous phase affected the quality factor.
The advantages offered by this approach include shape stability after the sintering, improved dielectric properties, mechanical strength, and controlled thermal expansivity [7,8].
The microwave dielectric properties of glass-ceramic were measured by a network analyzer (8720Es, Agilent, USA) at 6-8 GHz.
The highest value on relative, apparent densities and shrinkage at 850-900℃ can critically affect other properties such as dielectric properties.
At 750℃, the quality factor was lower than the others because the remaining amorphous phase affected the quality factor.
Online since: August 2013
Authors: Gheorghe Brabie, Neculai Nanu, Augustin Jitaru
For each sheet thickness, the mechanical properties and the forming limit curves (FLC) were determined and compared.
For each sheet thickness, the mechanical properties and forming limit curves (FLC) were determined and compared.
The determination of the mechanical properties was performed by using the tensile test combined with the image correlation method.
The determination of the mechanical properties of the thin sheet metal was performed by using a Lloyd tensile-compression testing machine.
Conclusions The influence of sheet thickness value on the mechanical and formability properties of the CuZn37 alloy was investigated in the present study.
For each sheet thickness, the mechanical properties and forming limit curves (FLC) were determined and compared.
The determination of the mechanical properties was performed by using the tensile test combined with the image correlation method.
The determination of the mechanical properties of the thin sheet metal was performed by using a Lloyd tensile-compression testing machine.
Conclusions The influence of sheet thickness value on the mechanical and formability properties of the CuZn37 alloy was investigated in the present study.
Online since: November 2014
Authors: Yu Cai Zhao, Qi Chen, Jian Bo Yin, Yun Bo Ma
Table 1 is the comparison of AMT and MT properties [1].
Table1 Comparison of AMT and MT Properties Working Principle and System Structure of AMT Working Principle of AMT AMT is remade on the basis of MT, mainly changing the manual shift operation part without changing the whole structure.
The motor is required to track the command signal quickly and precisely without being influenced by other factors such as the mechanical connection of the control unit and the controlled object, nonlinear of AMT system, time-varying factors, etc.
Because of the abolition of the clutch pedal, starting process is affected by load, traffic and other factors.
However, slow clutch engagement will prolong the clutch friction contact time so that the temperature rise, increasing friction and wear and affecting the life of the clutch.
Table1 Comparison of AMT and MT Properties Working Principle and System Structure of AMT Working Principle of AMT AMT is remade on the basis of MT, mainly changing the manual shift operation part without changing the whole structure.
The motor is required to track the command signal quickly and precisely without being influenced by other factors such as the mechanical connection of the control unit and the controlled object, nonlinear of AMT system, time-varying factors, etc.
Because of the abolition of the clutch pedal, starting process is affected by load, traffic and other factors.
However, slow clutch engagement will prolong the clutch friction contact time so that the temperature rise, increasing friction and wear and affecting the life of the clutch.