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Online since: January 2012
Authors: Huai Feng Tong, Bing Xie
The Length of Pile.The values of pile length relate to engineering geological properties of the soil and building requirements of the settlement, and the size of the required capacity of single pile etc. pile generally should be located on the soil that has higher bearing capacity, length-diameter ratio greater than 20, but should not exceed 80; Common length- diameter ratio is normally 40 to 60.
The Value of Enhancement Factor of Bearing Capacity of Natural Soil.
The size ofrelate to properties of the natural soil between piles, building requirements of the settlement, the size of area replacement ratio.
For small non-sand concrete pile, because the pile diameter affected by the engineering geological conditions and drilling equipment, the scope of common values of pile diameter changes in lesser extent, can be considered as a constant, in this case, the trends of,andis consistent.
For the factor of smear and disturbance: , the impact on the ground consolidation mainly related to the factors of construction, but no direct relationship with the size of the pile spacing.
The Value of Enhancement Factor of Bearing Capacity of Natural Soil.
The size ofrelate to properties of the natural soil between piles, building requirements of the settlement, the size of area replacement ratio.
For small non-sand concrete pile, because the pile diameter affected by the engineering geological conditions and drilling equipment, the scope of common values of pile diameter changes in lesser extent, can be considered as a constant, in this case, the trends of,andis consistent.
For the factor of smear and disturbance: , the impact on the ground consolidation mainly related to the factors of construction, but no direct relationship with the size of the pile spacing.
Online since: July 2014
Authors: Jian Bin Zhao, Hai Dong Song, Di Li, Zheng Zhang
Research method is establishing model of hot dry rock fractured storage layer by means of numerical simulation software FLUENT according to the rock physical properties in Shenyang region.
The burning products critically affect air quality and undermine the sustainable development.
It is critical step in the development of hot dry rock heating system.It directly affects the prime cost of hot dry rock research.It is also the basis of studying the fracture storage layer rock temperature distribution.
Therefore, forced convection is the only factor to consider in the heat transfer equation [5].According to the norm of conservation of energy, quantity of heat of per unit area along the axis direction is (2.1) The effect of fluid movement, control body of per unit area along the axis direction is (2.2) The heat conduction from the rock to fracture water is (2.3) Therefore, according to the norm of conservation of energy infer the heat transfer equation (2.4) Putting(2.1 ~ 2.3) into (2.4) can infer (2.5) The seepage of water obeys Darcy's law, can infer (2.6) Therefore, putting the formula (2.6) into (2.5) can get complete fracture water temperature field equations
American Society of Mechanical Engineers, Petroleum Division(Publication)PD, Emerging Energy Technology,1994,57:169-174
The burning products critically affect air quality and undermine the sustainable development.
It is critical step in the development of hot dry rock heating system.It directly affects the prime cost of hot dry rock research.It is also the basis of studying the fracture storage layer rock temperature distribution.
Therefore, forced convection is the only factor to consider in the heat transfer equation [5].According to the norm of conservation of energy, quantity of heat of per unit area along the axis direction is (2.1) The effect of fluid movement, control body of per unit area along the axis direction is (2.2) The heat conduction from the rock to fracture water is (2.3) Therefore, according to the norm of conservation of energy infer the heat transfer equation (2.4) Putting(2.1 ~ 2.3) into (2.4) can infer (2.5) The seepage of water obeys Darcy's law, can infer (2.6) Therefore, putting the formula (2.6) into (2.5) can get complete fracture water temperature field equations
American Society of Mechanical Engineers, Petroleum Division(Publication)PD, Emerging Energy Technology,1994,57:169-174
Online since: February 2013
Authors: Jian Min Zhu, Xin Hua Zhu, Qi Ming Hang, Feng Shan
Introduction
Materials that possess both magnetic and electrical properties have drawn much attention in recent years because of their potential use in novel devices in which magnetic and electric properties can be mutually controlled [1].
The TEM specimens were prepared from the polycrystalline samples by mechanical grinding, dimple grinding, and subsequently ion-milling.
Obviously, this is benefit to the improvement in the dielectric properties, as proved by the data of dielectric properties.
To further reduce the dielectric losses of the 0.33BTO-0.67BFO solid solutions and to confirm that the change in dielectric properties is repeatable, the dielectric properties of the samples with higher Mn-doped concentrations (e.g., x = 1.0 - 10) have been measured.
Zhou, Factors controlling pure-phase multiferroic BiFeO3 powders synthesized by chemical co-precipitation, Journal of Alloys and Compounds. 509 (2011) 2192-2197
The TEM specimens were prepared from the polycrystalline samples by mechanical grinding, dimple grinding, and subsequently ion-milling.
Obviously, this is benefit to the improvement in the dielectric properties, as proved by the data of dielectric properties.
To further reduce the dielectric losses of the 0.33BTO-0.67BFO solid solutions and to confirm that the change in dielectric properties is repeatable, the dielectric properties of the samples with higher Mn-doped concentrations (e.g., x = 1.0 - 10) have been measured.
Zhou, Factors controlling pure-phase multiferroic BiFeO3 powders synthesized by chemical co-precipitation, Journal of Alloys and Compounds. 509 (2011) 2192-2197
Online since: April 2014
Authors: Mao Sheng Li, Qun Gui Du
Study of Friction Lubrication Characteristics Research for CVT Fluids in Field Test
Maosheng Li1, a*, Qungui Du2,b
1School of Mechanical & Automotive Engineering, South China University of Technology, Guangzhou Guangdong 510640, China
2Guangzhou Mechanical Engineering Research Institute, Guangzhou Guangdong 510700, China
alms32389823@sohu.com, b398152583@qq.com
Keywords: CVTF, CVT, cone pulley, steel strip, lubrication, abrasion mechanism
Abstract.
Introduction Belt-drive continuously variable transmission has got a rapid development in recent years for its low fuel consumption, good performance in economy, simple mechanical structure and driving comfort[1-3].
Results and Conclusions 3.1 CVTF Performance Analysis 3.1.1 Property and Lubricity of CVTF CVT is sensitive to oil viscosity, oil viscosity directly affects the CVT transmission efficiency and wear situation and the service life of CVT.
Many factors can influence the viscosity property of transmission oil during the operation: The decrease of viscosity can be caused by the shear failure of the polymer improver of viscosity index under high shear rate; The kinematic viscosity can increase because of the generating of gum or sludge for oil oxidation during the operation.
Jie-hua Zhang, Min-jie Chen, Wei Yu, etal.Remaining Life Assessment of Used Oil by FTIR Based on Antioxidation Properties[J].Lubrication Engineering,2013,38(9):pp.92-94 [9].
Introduction Belt-drive continuously variable transmission has got a rapid development in recent years for its low fuel consumption, good performance in economy, simple mechanical structure and driving comfort[1-3].
Results and Conclusions 3.1 CVTF Performance Analysis 3.1.1 Property and Lubricity of CVTF CVT is sensitive to oil viscosity, oil viscosity directly affects the CVT transmission efficiency and wear situation and the service life of CVT.
Many factors can influence the viscosity property of transmission oil during the operation: The decrease of viscosity can be caused by the shear failure of the polymer improver of viscosity index under high shear rate; The kinematic viscosity can increase because of the generating of gum or sludge for oil oxidation during the operation.
Jie-hua Zhang, Min-jie Chen, Wei Yu, etal.Remaining Life Assessment of Used Oil by FTIR Based on Antioxidation Properties[J].Lubrication Engineering,2013,38(9):pp.92-94 [9].
Online since: May 2020
Authors: Xiao Yong Wang, Jia Ming Luo, Le Qing Huang, Hai Bao Wang
The bonding strength and comprehensive properties significantly depend on composite billet and rolling process, for the differences in physical properties between heterogeneous metals.
Mechanical behaviour of laminated metal composites.Inter.
Wang.Interface characteristic and properties of stainless steel/HSLA steel clad plate by vacuum rolling cladding.
Interfacial microstructure and properties of a vacuum hot roll-bonded titanium stainless steel clad plate with a niobium interlayer.
Microstructure and tensile properties of AISI 316 stainless steel electron-beam cladded on C40 mild steel.
Mechanical behaviour of laminated metal composites.Inter.
Wang.Interface characteristic and properties of stainless steel/HSLA steel clad plate by vacuum rolling cladding.
Interfacial microstructure and properties of a vacuum hot roll-bonded titanium stainless steel clad plate with a niobium interlayer.
Microstructure and tensile properties of AISI 316 stainless steel electron-beam cladded on C40 mild steel.
Online since: January 2017
Authors: Jintamai Suwanprateeb, Boris Golman, Sukasem Watcharamaisakul, Weeranuch Sukaraseranee
Granules exhibited relatively poor flow properties due to their small sizes and cohesive surface properties.
Thus, by adjusting the spray drying conditions we can control the granule properties.
The slurry composition and the rate of droplet evaporation are major factors that affect to granule shape and morphology.
Carr, Evaluating flow properties of solids.
Mojtaba, Whey powder: process technology and physical properties: A review, Middle-East J.
Thus, by adjusting the spray drying conditions we can control the granule properties.
The slurry composition and the rate of droplet evaporation are major factors that affect to granule shape and morphology.
Carr, Evaluating flow properties of solids.
Mojtaba, Whey powder: process technology and physical properties: A review, Middle-East J.
Online since: November 2016
Authors: Márcio Celso Fredel, Luciana Maccarini Schabbach, Luiza Izabel Jacinto, Maria Eduarda Xavier da Silva, Deivis Luis Marinoski
In this study, thermal and optical properties (emittance and reflectance of solar radiation) of different colors ceramic tiles for use in outside surfaces were measured.
Although widely used in the brazilian residential market, these materials are not properly characterized with respect to these properties.
Therefore, the calculation of SRI depends on two key factors: solar reflectance (r) and thermal emittance (ε).
In this context, this study aimed to determine thermal properties of ceramic coatings for use on exterior surfaces of buildings.
It is worth remembering that SRI varies with two material properties: solar reflectance and thermal emittance.
Although widely used in the brazilian residential market, these materials are not properly characterized with respect to these properties.
Therefore, the calculation of SRI depends on two key factors: solar reflectance (r) and thermal emittance (ε).
In this context, this study aimed to determine thermal properties of ceramic coatings for use on exterior surfaces of buildings.
It is worth remembering that SRI varies with two material properties: solar reflectance and thermal emittance.
Online since: November 2017
Authors: Wen Li, Pan Liu, Xin Guo
In recent years, with the better economic situation, the regional highway network are further perfect, but because of poor construction quality, the road use, natural disasters affect certain roads and so on reasons not to exercise their responsibilities, seriously affected the driving quality and safety, every year need to spend a lot of manpower material resources for maintenance and servicing, caused huge losses to the society.
Therefore, the grouting material is one of the most significant factors that affect the treatment effectiveness.
The characteristics of Polyvinyl alcohol fiber: (1) It have Good mechanical properties, high strength, high modulus and low elongation
Research on Adhesive Property of Polymer Modified Cement Matrix Adhesive Composites [D].
Therefore, the grouting material is one of the most significant factors that affect the treatment effectiveness.
The characteristics of Polyvinyl alcohol fiber: (1) It have Good mechanical properties, high strength, high modulus and low elongation
Research on Adhesive Property of Polymer Modified Cement Matrix Adhesive Composites [D].
Online since: January 2016
Authors: Jiří Němeček, Veronika Petráňová, Vladimír Hrbek
The level of polymerization is dependent on many factors, such as presence of water during the hydrolysis and type of organic substituent.
Results The results of fresh mixture properties for SET 1 are shown in Fig. 3 and short term absorption and full saturation in Fig. 4.
Discussion Based on the previously presented results of fresh mixture properties, it is obvious that the SMS interaction affects the workability.
The performed tests compared the properties of the alternated cementitious matrix in both fluid and solid state.
Abd-EL-Khalek, Mechanical and Physico-chemical Properties pf Hardened Portland Cement Paste Containing Hydrophobic Admixtures: Compressive Strength and Hydration Kinetics, ZKG International 52 (1999), pg. 697 - 700 [5] B.
Results The results of fresh mixture properties for SET 1 are shown in Fig. 3 and short term absorption and full saturation in Fig. 4.
Discussion Based on the previously presented results of fresh mixture properties, it is obvious that the SMS interaction affects the workability.
The performed tests compared the properties of the alternated cementitious matrix in both fluid and solid state.
Abd-EL-Khalek, Mechanical and Physico-chemical Properties pf Hardened Portland Cement Paste Containing Hydrophobic Admixtures: Compressive Strength and Hydration Kinetics, ZKG International 52 (1999), pg. 697 - 700 [5] B.
Online since: January 2016
Authors: Song Zhang, Zhe Li, Yan Chen, Peng Wang, Ai Rong Zhang
Dynamic characteristics of numerical control (NC) machine tools, such as natural frequency and vibration property, directly affect machining efficiency and finished surface quality.
Natural frequency and vibration property are two of machine tool’s dynamic characteristics which directly affect machining efficiency and finished surface quality [7].
During the cutting process, the vibration is complicated for the reason that it is combined with various factors.
The interference of environmental factor is eliminated.
Research on Inherence Properties of CK6310 NC Headstock [J].
Natural frequency and vibration property are two of machine tool’s dynamic characteristics which directly affect machining efficiency and finished surface quality [7].
During the cutting process, the vibration is complicated for the reason that it is combined with various factors.
The interference of environmental factor is eliminated.
Research on Inherence Properties of CK6310 NC Headstock [J].