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Online since: December 2012
Authors: Xiao Ming Yi, Song Gen Wang, Zhen Qing Liu, Gang Xu
The results show that high permeability coefficient and strong capillary are main factors to increase the water content, and the influence of capillary rising is greater than that of rainfall infiltration.
Water content and compaction both effect the mechanical characteristics of soils, but the influence of water content is more obvious than that of compaction [1,2].
Table 1 presents the Physical properties of the soil.
Table 1 The physical properties of the silt soil grain composition ωL[%] ωP[%] IP=ωL-ωP GS particle[mm] 0.25~0.074 0.074~0.05 0.05~0.005 0.005~0.002 <0.002 33.6 24.8 8.8 2.7 content[%] 26.5 34.2 34.9 4.3 0.1 Compaction tests.
Particles with the diameter less than 0.005mm affect the action force on the interface between water and soil particles, so that the silt sample appears the characteristic of cohesive soil.
Water content and compaction both effect the mechanical characteristics of soils, but the influence of water content is more obvious than that of compaction [1,2].
Table 1 presents the Physical properties of the soil.
Table 1 The physical properties of the silt soil grain composition ωL[%] ωP[%] IP=ωL-ωP GS particle[mm] 0.25~0.074 0.074~0.05 0.05~0.005 0.005~0.002 <0.002 33.6 24.8 8.8 2.7 content[%] 26.5 34.2 34.9 4.3 0.1 Compaction tests.
Particles with the diameter less than 0.005mm affect the action force on the interface between water and soil particles, so that the silt sample appears the characteristic of cohesive soil.
Online since: August 2016
Authors: Sandip Patil, Ramesh Singh, R.K.P. Singh, Kamlesh Phapale
Composite laminates are used in many applications in industries like aerospace and aircraft due to their extremely high strength to weight ratio and corrosion resistance properties.
Introduction There has been a growing interest in using composite materials in place of conventional materials in the industry of aerospace, defense and transportation having tremendous potential of composite materials due to their unique properties, such as extremely high strength to weight ratio and corrosion resistance.
The size of CFRP plate used for experimental work was 150x20x6 mm as shown in Fig.2 The mechanical property of CFRP materials is given in Table 1, Fig. 2 Image of CFRP plate used in experiment The mechanical properties of CFRP materials are shown in Table 1, Table 1, Mechanical properties of CFRP composite Experimental set-up A Hardinge VMC 600II three-axis vertical machining center with a three phase, 50Hz, 25 kW spindle drive was used in drilling tests.
To identify the factors and the levels for the cutting condition, a number of preliminary drilling experiments (~30) were performed.
An increase in feed rate of the drill would be a contributing factor for the increased rate of propagation of crack [11].
Introduction There has been a growing interest in using composite materials in place of conventional materials in the industry of aerospace, defense and transportation having tremendous potential of composite materials due to their unique properties, such as extremely high strength to weight ratio and corrosion resistance.
The size of CFRP plate used for experimental work was 150x20x6 mm as shown in Fig.2 The mechanical property of CFRP materials is given in Table 1, Fig. 2 Image of CFRP plate used in experiment The mechanical properties of CFRP materials are shown in Table 1, Table 1, Mechanical properties of CFRP composite Experimental set-up A Hardinge VMC 600II three-axis vertical machining center with a three phase, 50Hz, 25 kW spindle drive was used in drilling tests.
To identify the factors and the levels for the cutting condition, a number of preliminary drilling experiments (~30) were performed.
An increase in feed rate of the drill would be a contributing factor for the increased rate of propagation of crack [11].
Online since: October 2013
Authors: Lei Mei, Ji Quan Hu, Yong Zhi Li, Tian Pei Chen
Intermediate support is also the important influence factors of conveyor’s transportation performance as an indispensable component of the vertical screw conveyor.
DEM was used by Cleary to study the model that material falls down from hopper of screw conveyor with 45° Angle[6], then Cleary has a further study of the influence that the particle shape has on downwelling and transport properties of screw conveyor[7].
(2) The physical properties of particles and the geometry In the simulation of the actual system, the rationality of physical properties of materials is the key to ensure that the simulation results is close to the reality, the physical properties of the materials involved in simulation are shown in Table 1 and Table 2 [8].
Table 1 Material Properties Table Material Poisson's ratio Shear Modulus(Pa) Density (kg/m3) Rice 0.40 1053 Steel 0.30 7850 Table 2 Contact Property Table Interaction.
Continuous conveyor Mechanical Design Handbook [M].Beijin: China Railway Press,2001
DEM was used by Cleary to study the model that material falls down from hopper of screw conveyor with 45° Angle[6], then Cleary has a further study of the influence that the particle shape has on downwelling and transport properties of screw conveyor[7].
(2) The physical properties of particles and the geometry In the simulation of the actual system, the rationality of physical properties of materials is the key to ensure that the simulation results is close to the reality, the physical properties of the materials involved in simulation are shown in Table 1 and Table 2 [8].
Table 1 Material Properties Table Material Poisson's ratio Shear Modulus(Pa) Density (kg/m3) Rice 0.40 1053 Steel 0.30 7850 Table 2 Contact Property Table Interaction.
Continuous conveyor Mechanical Design Handbook [M].Beijin: China Railway Press,2001
Online since: February 2011
Authors: Hui Xu, Xiao Wang, Jin Liang Huang, Yong Jun Gu, Xiang Ju Han, Qian Li
Therefore, it is important to lower the sintering temperature without much deterioration of dielectric properties.
In this paper, the effects of LiF/ZBS glass addition on the sintering behaviors and microwave dielectric properties of CLLNT ceramics were investigated.
The decrease of Q×f values might be attributed to the increment of small ionic radius Li+, resulting in the increasing migration loss, for the migration of Li+ is a more important factor than porosity to affect the Q×f values of microwave dielectric ceramics having over 90% of relative density [18].
The optimum dielectric properties of the LiF/ZBS doped CLLNT ceramics sintered at 1000°C for 3h are lower than those of the pure CLLNT ceramics sintered at above 1300°C for 4h, but these dielectric properties and the sintering temperature of so-synthesized specimen make it possible to meet the requirements for LTCC applications.
The interactions between LiF/ZBS doped CLLNT ceramic and Cu electrode, the mechanical properties of low co-fired ceramic specimens, and further lowering the temperature of CLLNT ceramic are under investigations.
In this paper, the effects of LiF/ZBS glass addition on the sintering behaviors and microwave dielectric properties of CLLNT ceramics were investigated.
The decrease of Q×f values might be attributed to the increment of small ionic radius Li+, resulting in the increasing migration loss, for the migration of Li+ is a more important factor than porosity to affect the Q×f values of microwave dielectric ceramics having over 90% of relative density [18].
The optimum dielectric properties of the LiF/ZBS doped CLLNT ceramics sintered at 1000°C for 3h are lower than those of the pure CLLNT ceramics sintered at above 1300°C for 4h, but these dielectric properties and the sintering temperature of so-synthesized specimen make it possible to meet the requirements for LTCC applications.
The interactions between LiF/ZBS doped CLLNT ceramic and Cu electrode, the mechanical properties of low co-fired ceramic specimens, and further lowering the temperature of CLLNT ceramic are under investigations.
Online since: May 2005
Authors: R. Bahloul, Phillippe dal Santo, Ali Mkaddem, A. Potiron
(a) Initial position, (b) intermediate phase, (c) Springback
Mechanical properties of the tested material are provided in Table 1.
Major mechanical properties of S500MC steel Material Lemaître's model E[Mpa] ν σy[Mpa] K[Mpa] n ε D εR Dc DR 2.10E5 0.28 560 800 0.745 0 0.35 0.21 0.99 After having bent all the specimens, visual observations and measurements of the geometry were made to evaluate springback thanks to projector of profile Sagem-p500-67N524 (Fig. 2).
A full factorial design of tow factors is carried out by varying the design parameters and analysing the response related to the springback.
From practical point of view, it should be noted that net-shape parts can not be obtained easily with good geometrical properties in wiping die bending process for positive relative punch-sheet clearances.
Tekiner: An experimental study on the examination of springback of sheet metals with several thiknesses and properties in bending dies, Journal of Materials Processing Technology Vol. 145 (2004), p. 109-117
Major mechanical properties of S500MC steel Material Lemaître's model E[Mpa] ν σy[Mpa] K[Mpa] n ε D εR Dc DR 2.10E5 0.28 560 800 0.745 0 0.35 0.21 0.99 After having bent all the specimens, visual observations and measurements of the geometry were made to evaluate springback thanks to projector of profile Sagem-p500-67N524 (Fig. 2).
A full factorial design of tow factors is carried out by varying the design parameters and analysing the response related to the springback.
From practical point of view, it should be noted that net-shape parts can not be obtained easily with good geometrical properties in wiping die bending process for positive relative punch-sheet clearances.
Tekiner: An experimental study on the examination of springback of sheet metals with several thiknesses and properties in bending dies, Journal of Materials Processing Technology Vol. 145 (2004), p. 109-117
Online since: May 2011
Authors: Xiong Hu Zhao, Yu Fei Li, Wai Li, Fei Gao
As a result, the effect of drilling fluids environment on rock properties can be displayed visually, which is supposed to be significant in terms of rising ROP theoretically and improving drilling fluids properties.
On the whole, the increased rate of ROP is greater than 20%, which demonstrates that the physical and chemical properties of rock surfaces are both influenced by the zeta potential.
It is probably because the other properties of ZJBS have had an influence on ROP.
It maybe because the micelle numerator is oversized affecting the penetration from solutions to rocks.
(2) One of the most important factors that affect ROP is the zeta potential of the rock-solution contact.
On the whole, the increased rate of ROP is greater than 20%, which demonstrates that the physical and chemical properties of rock surfaces are both influenced by the zeta potential.
It is probably because the other properties of ZJBS have had an influence on ROP.
It maybe because the micelle numerator is oversized affecting the penetration from solutions to rocks.
(2) One of the most important factors that affect ROP is the zeta potential of the rock-solution contact.
Online since: May 2010
Authors: Ulf Engel, Tobias Schrader, Marion Merklein
In cold forging processes the high tribological and mechanical loads often lead to early
tool failure.
Therefore a lot of coatings with different properties are necessary, which need to be adjusted to the various applications.
In some applications long glide paths or high friction are the dominant factors for wear occurrence [6].
Their different properties need to be adjusted to the plurality of applications [8].
Normally two different individual layers with different properties are alternating.
Therefore a lot of coatings with different properties are necessary, which need to be adjusted to the various applications.
In some applications long glide paths or high friction are the dominant factors for wear occurrence [6].
Their different properties need to be adjusted to the plurality of applications [8].
Normally two different individual layers with different properties are alternating.
Online since: December 2025
Authors: Bogdan Radu, George Belgiu, Mircea E. Selariu
Cutting tool DCLNR2525M12-M dimensions [8]
Name
Description
Value
B
Shank width
25.0 mm
CSP
Coolant supply property
0
GAMO
Rake angle orthogonal
-6.0 deg
H
Height of tool holder shank
25.0 mm
HAND
Direction of cutting
Right
ICS
Insert clamping system
D
KAPR
Tool cutting edge angle
95.0 deg
KAPRC
Tool Cutting Edge Angle Code
L
LAMS
Inclination angle
-6.0 deg
LF
Functional length
150.00 mm
LH
Head length
32.0 mm
Shanktype
Shanktype
Square shank
Weight
Net weight
0.748 kg
In the cutting process, the occurrence of vibrations presupposes the existence of two factors: (i) the variable external force, which causes the vibrations, and (ii) the elastic system, which depends both on the elasticity of each separate element and on the stiffness of the whole system: machine-tool – workpiece – tool cutter – jig.
Dismantled tool DCLNR2525M12-M [8] There are also studies that emphasize the factors that affect the behavior of the cutting tool correlated with the surface roughness obtained from the process [5].
It is known that the appearance of vibrations both in the radial and tangential directions as well as the amplitude of the vibrations are determined by the cutting regime ( ap , F, S ), the geometry of the tool ( α , γ , κ ,κ1 , r , λ ) , the wear of the tool on the Aα face, the smoothness of the tool faces, the cutting fluid, the properties physical and mechanical properties of the processed material and the tool material, the rigidity and damping of the technological system.
Although a range of experimental data of the chipping process can be used, such as vibration occurrence, frequency response functions or time domain data or modal data reflecting natural frequencies, mode shapes and damping ratios, these are all the most affected.
[5] Quang Ngoc The Ho, Thanh Trung Do and Pham Son Minh, Studying the Factors Affecting Tool Vibration and Surface Quality during Turning through 3D Cutting Simulation and Machine Learning Model, Micromachines 2023, 14(5), 1025; https://doi.org/10.3390/mi14051025
Dismantled tool DCLNR2525M12-M [8] There are also studies that emphasize the factors that affect the behavior of the cutting tool correlated with the surface roughness obtained from the process [5].
It is known that the appearance of vibrations both in the radial and tangential directions as well as the amplitude of the vibrations are determined by the cutting regime ( ap , F, S ), the geometry of the tool ( α , γ , κ ,κ1 , r , λ ) , the wear of the tool on the Aα face, the smoothness of the tool faces, the cutting fluid, the properties physical and mechanical properties of the processed material and the tool material, the rigidity and damping of the technological system.
Although a range of experimental data of the chipping process can be used, such as vibration occurrence, frequency response functions or time domain data or modal data reflecting natural frequencies, mode shapes and damping ratios, these are all the most affected.
[5] Quang Ngoc The Ho, Thanh Trung Do and Pham Son Minh, Studying the Factors Affecting Tool Vibration and Surface Quality during Turning through 3D Cutting Simulation and Machine Learning Model, Micromachines 2023, 14(5), 1025; https://doi.org/10.3390/mi14051025
Online since: June 2014
Authors: Rui Long Chen, Xiao Dong Wu, Dao Xin Zhang
Introduction
High strength and good mechanical properties are two main characteristics of gear steel[1].
The mechanical properties can be improved by adding sulfur in gear steel.
This type of inclusion is beneficial to the properties of steel[3].
But improper calcium treatment will affect the casting properties of steel.
But for the smelting conditions and other factors, a small amount of long strip inclusions can be found in some rolled steels.
The mechanical properties can be improved by adding sulfur in gear steel.
This type of inclusion is beneficial to the properties of steel[3].
But improper calcium treatment will affect the casting properties of steel.
But for the smelting conditions and other factors, a small amount of long strip inclusions can be found in some rolled steels.
Online since: March 2015
Authors: Chun Jian Su, Shu Mei Lou, Yong Xiao Wang, Shuai Lu
There are many factors that could affect the uniformity of the outlet velocity, especially in the extrusion of asymmetric cross section.
(a) Upper die (b) Lower die Fig. 3 Geometric model of the initially designed porthole die Material Properties.
Table 2 Factors and its levels Level No.
It is indicated that bearing shape has more significant effect on the SDV than other factors.
The effect of bearing on the uniformity is much higher than other factors
(a) Upper die (b) Lower die Fig. 3 Geometric model of the initially designed porthole die Material Properties.
Table 2 Factors and its levels Level No.
It is indicated that bearing shape has more significant effect on the SDV than other factors.
The effect of bearing on the uniformity is much higher than other factors