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Online since: February 2013
Authors: Mei Hui Jia, Tian Zhang, Cheng Tong Tang, Jian Hua Liu
The tube plastic bending is a multi-factor coupling process, and the influencing factors are quite complex.
It is found that the different tube material properties can be significant difference of the tube bending forming quality, so the tube mechanical properties parameters is one of the important factors that affect the quality of tube plastic bending [3-5].
In this paper, the actual mechanical property parameters of tube are obtained by uniaxial tensile tests, and the influencing factors of mechanical properties parameters are analyzed.
Input and output parameters of RBF neural network According to the influencing factors analysis of the tube mechanical properties, we take the tube diameter and wall thickness as the input parameters of the neural network, and take the mechanical property parameters of the tube as output parameter, which is as shown in Fig.4.
And it is considered by integrated analysis that the material and geometric parameters are the most important influence factors of the tube mechanical properties, where the impact of the tube wall thickness is greater than that of the tube diameter.
It is found that the different tube material properties can be significant difference of the tube bending forming quality, so the tube mechanical properties parameters is one of the important factors that affect the quality of tube plastic bending [3-5].
In this paper, the actual mechanical property parameters of tube are obtained by uniaxial tensile tests, and the influencing factors of mechanical properties parameters are analyzed.
Input and output parameters of RBF neural network According to the influencing factors analysis of the tube mechanical properties, we take the tube diameter and wall thickness as the input parameters of the neural network, and take the mechanical property parameters of the tube as output parameter, which is as shown in Fig.4.
And it is considered by integrated analysis that the material and geometric parameters are the most important influence factors of the tube mechanical properties, where the impact of the tube wall thickness is greater than that of the tube diameter.
Online since: March 2015
Authors: Qiu Mei Zhang, Jin Tao Tang, Hao Ma
There are many influence factors of the rock slope stability, and they can be divided into natural factor and disturbance factor[3][4].Natural factors include lithology , rock structure, slope Angle, slope high and the control factors are slope structural plane.
Water has a great influence on the mechanical properties of the rock, often affect the deformation of the rock, and accelerate the deformation and failure of rock.
It shows that the influence degree of water content to the mechanical properties change with the kind of rock.
Therefore, for the natural slope the degree of saturation is an important factor affecting their stability.
We get the fitting equation between water content and rock mechanical properties with four kind of rocks.
Water has a great influence on the mechanical properties of the rock, often affect the deformation of the rock, and accelerate the deformation and failure of rock.
It shows that the influence degree of water content to the mechanical properties change with the kind of rock.
Therefore, for the natural slope the degree of saturation is an important factor affecting their stability.
We get the fitting equation between water content and rock mechanical properties with four kind of rocks.
Online since: December 2014
Authors: Tao Zhang, Qian Wang
Factors Affecting Bond
Generally, bond strength between masonry units and mortars is determined by two microstructures that are the amount of hydrate products and bond area between units and mortars.
However, those two factors are determined by mortar and brick mechanical and physical properties, testing methods, curing condition, age and workmanship.
However, those two factors are determined by mortar and brick properties
Materials and Structures (2010) 43:913–922 [5]Venkatarama Sugo, Factors Affecting Bond Strength of Masonry.
I., "Factors Affecting Bond Strength and Resistance to Moisture Penetration of Brick Masonry," Symposium on Masonry Testing, ASTM STP 320, American Society for Testing and Materials, Phila- delphia, 1963, pp. 16-30 [10] Isberner, A.
However, those two factors are determined by mortar and brick mechanical and physical properties, testing methods, curing condition, age and workmanship.
However, those two factors are determined by mortar and brick properties
Materials and Structures (2010) 43:913–922 [5]Venkatarama Sugo, Factors Affecting Bond Strength of Masonry.
I., "Factors Affecting Bond Strength and Resistance to Moisture Penetration of Brick Masonry," Symposium on Masonry Testing, ASTM STP 320, American Society for Testing and Materials, Phila- delphia, 1963, pp. 16-30 [10] Isberner, A.
Online since: January 2017
Authors: Teeradej Wuttipornpun, Kusol Pimapunsri, Darawan Veeranant
The separation force is one of the most important properties of artificial leather industry.
The result of cause and effect analysis shows that there are three laminating factors directly affect the separation force.
Table 1 Levels of laminating factors.
Based on the analysis of variance (ANOVA), all main factors are significantly affected to MD and TD, whereas there is no interaction effect from all combinations of the main factors.
Hajjaji, Quantification of the effects of manufacturing factors on ceramic properties using full factorial design, J.
The result of cause and effect analysis shows that there are three laminating factors directly affect the separation force.
Table 1 Levels of laminating factors.
Based on the analysis of variance (ANOVA), all main factors are significantly affected to MD and TD, whereas there is no interaction effect from all combinations of the main factors.
Hajjaji, Quantification of the effects of manufacturing factors on ceramic properties using full factorial design, J.
Online since: January 2012
Authors: Chuan Sheng Wang, Xian Kui Zeng, De Wei Zhang, Hui Guang Bian
The Filling Factor Impact on Physical and Mechanical Properties of Vulcanized Rubber.
When the filling factor is 0.6, the physical and mechanical properties of the vulcanization are best then other effecters.
This is because when the filling factor is smaller value, the working volume of mixer is smaller too, which lead to the mixer can not get full use, reduce the shear and mixing functions to the rubber, short fiber and carbon black can not get full equably dispersed, and the top bolt can not fully play the role of pressure, result in the phenomenon of rubber skid and idling, affecting the macro-homogenization of the rubber, which lead to decrease physical and mechanical properties of vulcanized rubber.
The Polyester Short Fiber Addition Impact on Physical and Mechanical Properties of Vulcanized Rubber.
(2) The physical and mechanical properties of the vulcanized was increased, indicating the reinforcement effect of short fiber, when the filling factor is 0.60, polyester short fiber addition is 3,Physical and mechanical properties of vulcanized rubber achieve to the best value.
When the filling factor is 0.6, the physical and mechanical properties of the vulcanization are best then other effecters.
This is because when the filling factor is smaller value, the working volume of mixer is smaller too, which lead to the mixer can not get full use, reduce the shear and mixing functions to the rubber, short fiber and carbon black can not get full equably dispersed, and the top bolt can not fully play the role of pressure, result in the phenomenon of rubber skid and idling, affecting the macro-homogenization of the rubber, which lead to decrease physical and mechanical properties of vulcanized rubber.
The Polyester Short Fiber Addition Impact on Physical and Mechanical Properties of Vulcanized Rubber.
(2) The physical and mechanical properties of the vulcanized was increased, indicating the reinforcement effect of short fiber, when the filling factor is 0.60, polyester short fiber addition is 3,Physical and mechanical properties of vulcanized rubber achieve to the best value.
Online since: February 2013
Authors: Da Meng Liu, Yan Bin Yao, Jun Qian Li, Yi Dong Cai
Previous research showed that mechanical properties of coals are affected by petrographical composition, micro-and macro-fractures and anisotropy etc. [7].
In this paper, the influencing factors of the mechanical property (Young’s modulus) of anthracite coals were studied comprehensively including confining stress condition, water ratio, coal properties and compositions.
Research showed that moisture content is a significant factor influencing the mechanical property of coals [9].
Coal properties.
Coal properties including ash yield and fixed carbon content also affect the Young’s modulus of coals.
In this paper, the influencing factors of the mechanical property (Young’s modulus) of anthracite coals were studied comprehensively including confining stress condition, water ratio, coal properties and compositions.
Research showed that moisture content is a significant factor influencing the mechanical property of coals [9].
Coal properties.
Coal properties including ash yield and fixed carbon content also affect the Young’s modulus of coals.
Effects of Fuel Gas on the Microstructure and Mechanical Properties of HVOF Spraying WC-12Co Coating
Online since: December 2012
Authors: Ming Jing Tu, Hui Chen, Li Jun Wang, Yan Liu, Jin Peng Yu, Gou Qing Gou
Morphology and mechanical properties of the coatings are analyzed.
The ration of fuel gas to oxygen is a significant factor affecting the properties of the thermal spray coating.
The results show that the main factors affecting the indentation crack propagation and fracture toughness are WC grain size, binder phase content and the performance of each phase, etc..
Thus the factor influencing the microstructure and mechanical properties is the kind of fuel gas.
The different combustion temperature of fuel gas results in varied melting degree of the powder, which is the main factor affecting the properties of the coating.
The ration of fuel gas to oxygen is a significant factor affecting the properties of the thermal spray coating.
The results show that the main factors affecting the indentation crack propagation and fracture toughness are WC grain size, binder phase content and the performance of each phase, etc..
Thus the factor influencing the microstructure and mechanical properties is the kind of fuel gas.
The different combustion temperature of fuel gas results in varied melting degree of the powder, which is the main factor affecting the properties of the coating.
Online since: February 2013
Authors: Wen Jun Qi, Zheng Hua Huang, Jing Xu
Magnesium alloys generally exhibit relatively poor impact toughness [8-11], so it is also necessary to develop new magnesium alloys with high impact toughness by studying the internal affecting factors.
Tensile mechanical properties of (a) as-cast and (b) extruded ZK60-xHo alloys.
Solute with good segregation and effective nuclei are two essential factors.
Internal affecting factors mainly include the texture structure, grain size, second phase and impurity defects.
Li, Microstructure and mechanical properties of ZK60-Yb magnesium alloys, Mater.
Tensile mechanical properties of (a) as-cast and (b) extruded ZK60-xHo alloys.
Solute with good segregation and effective nuclei are two essential factors.
Internal affecting factors mainly include the texture structure, grain size, second phase and impurity defects.
Li, Microstructure and mechanical properties of ZK60-Yb magnesium alloys, Mater.
Online since: September 2014
Authors: Le Zhou, Xiao Mei Nie, Yun Hao Bai
With the lapse of time, the carrying capacity of early steel structure buildings which affected by various factors in the process of long service has dropped.
This paper introduces the characteristics and mechanical properties of axially loaded steel columns strengthened by welding under load and axially loaded steel columns strengthened by enclosed reinforced concrete under load according to the studies of steel columns reinforced under load at home and abroad.
According to the literature [3] the influence of initial load of original steel columns can be ignored, and the initial imperfection is a major factor affecting the carrying capacity of the steel columns reinforced by welding.
The main factor affected the bearing capacity of reinforced steel column is the initial defect.
Research on mechanical properties of steel structural members strengthened by welding steel plates while under load [D].
This paper introduces the characteristics and mechanical properties of axially loaded steel columns strengthened by welding under load and axially loaded steel columns strengthened by enclosed reinforced concrete under load according to the studies of steel columns reinforced under load at home and abroad.
According to the literature [3] the influence of initial load of original steel columns can be ignored, and the initial imperfection is a major factor affecting the carrying capacity of the steel columns reinforced by welding.
The main factor affected the bearing capacity of reinforced steel column is the initial defect.
Research on mechanical properties of steel structural members strengthened by welding steel plates while under load [D].
Online since: December 2012
Authors: Xiu Ying Yang, Qiang Qin, Yang Yang Cui
During the analysis, the properties of steel material must be defined firstly, which are the decisive factor affecting the carrying capacity of steel beam.
The mechanical and physical properties of steel at high temperatures were accessed accordance to the provisions of the European specification in analysis.
The finite element program ANSYS was used to analyze the constraints steel beam, which subjected to the uniformly line loads, then the steel beam was heated up continuously, and the mechanical properties and deformation of the steel beam was analyzed at different temperatures.
However, steel is not fire-resistant, although the steel is non-flammable materials, but the physical and mechanical properties changes greatly at high temperatures.
Computational Model To th3e steel beam, the mechanical properties and deformation affected by the high temperature were analyzed.
The mechanical and physical properties of steel at high temperatures were accessed accordance to the provisions of the European specification in analysis.
The finite element program ANSYS was used to analyze the constraints steel beam, which subjected to the uniformly line loads, then the steel beam was heated up continuously, and the mechanical properties and deformation of the steel beam was analyzed at different temperatures.
However, steel is not fire-resistant, although the steel is non-flammable materials, but the physical and mechanical properties changes greatly at high temperatures.
Computational Model To th3e steel beam, the mechanical properties and deformation affected by the high temperature were analyzed.