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Online since: July 2015
Authors: I.L. Deryagina, E.N. Popova
Among the factors determining the structure and superconducting properties of these wires are the fabrication routes, heat treatment regimes and alloying.
Recently the physical properties of the Nb3Sn system were revisited in [12], in which the main attention is focused on their variation with the Sn content.
The effect of Ti on the structure and properties of multifilamentary Nb3Sn-based superconductors is discussed in the next section.
In [76] we studied several multifilamentary wires with coupled Nb filaments alloyed with Ti or the Ti-doped Osprey-bronze matrix in order to reveal Ti distribution and the factors affecting their critical current densities.
Among a number of factors, ensuring high performance and stability of superconducting wires, is the amount of stabilizing copper and its specific resistance.
Recently the physical properties of the Nb3Sn system were revisited in [12], in which the main attention is focused on their variation with the Sn content.
The effect of Ti on the structure and properties of multifilamentary Nb3Sn-based superconductors is discussed in the next section.
In [76] we studied several multifilamentary wires with coupled Nb filaments alloyed with Ti or the Ti-doped Osprey-bronze matrix in order to reveal Ti distribution and the factors affecting their critical current densities.
Among a number of factors, ensuring high performance and stability of superconducting wires, is the amount of stabilizing copper and its specific resistance.
Online since: October 2010
Authors: Zhong Ying Jiang, Ben Sheng Huang, Zhou Fan
By comparing the Tafel slope and the corrosion current, get the affecting extent and law of chloride ion to the drill pipe corrosion.
The impact properties are tested by the six samples of which the dimensions are all 10mm×10mm×55mm.
Fig.1 The size of SSRT specimen Fig.2 The appearance of the specimen The Mechanical Properties of G105 Drill Pipe The chemical composition and tensile properties of G105 are showed in Table.1 and Table.2, its microstructure is showed in Fig.3.
The impact properties are respectively: 144J, 144J, 144J, 136J, 144J, 141J.
When we choose corrosion inhibitor, we not only should consider the constitutes of corrosion medium, operation parameters and possible corrosion types, but also consider the corrosion properties of corrosion inhibitor and the compatibility of medium and additives.
The impact properties are tested by the six samples of which the dimensions are all 10mm×10mm×55mm.
Fig.1 The size of SSRT specimen Fig.2 The appearance of the specimen The Mechanical Properties of G105 Drill Pipe The chemical composition and tensile properties of G105 are showed in Table.1 and Table.2, its microstructure is showed in Fig.3.
The impact properties are respectively: 144J, 144J, 144J, 136J, 144J, 141J.
When we choose corrosion inhibitor, we not only should consider the constitutes of corrosion medium, operation parameters and possible corrosion types, but also consider the corrosion properties of corrosion inhibitor and the compatibility of medium and additives.
Online since: July 2011
Authors: Nofrijon Sofyan
Due to inherent properties of the chemical used as a decontaminant agent, it possibly could affect the airliner metallic materials during or after the decontamination process, particularly copper.
Introduction The copper dissolution rate into hydrogen peroxide was determined after an initial study of the impact of decontamination on the properties of aircraft structural materials, in which some leaching of copper into hydrogen peroxide during the dip testing was observed.
Several investigators have investigated the dissolution of pure copper and its properties in several acidic solutions such as sulfuric acid [1,2], hydrochloric acid [3,4], and ethylene diamine tetra acetic acid/ethylene diamine (EDTA/EDA) base solutions [5].
To reduce the variability in the temperature effect, the subsequent experiments were carried out without mechanical stirring, except at the beginning of reaction for particle suspension homogenization purpose.
However, as has been pointed out in the previous section, the value calculated by using this method cannot be confirmed because other factors, such as the diffusion layer thickness and kinematic viscosity, which would affect the diffusivity, was not included in the calculation.
Introduction The copper dissolution rate into hydrogen peroxide was determined after an initial study of the impact of decontamination on the properties of aircraft structural materials, in which some leaching of copper into hydrogen peroxide during the dip testing was observed.
Several investigators have investigated the dissolution of pure copper and its properties in several acidic solutions such as sulfuric acid [1,2], hydrochloric acid [3,4], and ethylene diamine tetra acetic acid/ethylene diamine (EDTA/EDA) base solutions [5].
To reduce the variability in the temperature effect, the subsequent experiments were carried out without mechanical stirring, except at the beginning of reaction for particle suspension homogenization purpose.
However, as has been pointed out in the previous section, the value calculated by using this method cannot be confirmed because other factors, such as the diffusion layer thickness and kinematic viscosity, which would affect the diffusivity, was not included in the calculation.
Inclination Angle Effect on the Thickness Distribution in a Superplastic Formed Long Rectangular Pan
Online since: December 2012
Authors: Firas Salah Jarrar, Mohammad Ahmad Nazzal
Major contributing factors are sheet-die friction and die geometry.
The two factors are in fact intertwined; for example, in an early study by Ghosh and Hamilton [3], they found that the effect of friction coefficient on the thinning behavior near the die radius was dependent on the size of the die entry radius itself.
Some of the geometric factors that affect the thickness distribution include; die aspect ratio, entry and bottom radii, flange width and the wall inclination angle.
It has the advantage of being easy to prepare [6, 7], relatively cheap [7], and exhibits superplastic properties at room temperature [7].
The lower the thinning factor, the greater is the deviation in thickness distribution along the mid-section profile.
The two factors are in fact intertwined; for example, in an early study by Ghosh and Hamilton [3], they found that the effect of friction coefficient on the thinning behavior near the die radius was dependent on the size of the die entry radius itself.
Some of the geometric factors that affect the thickness distribution include; die aspect ratio, entry and bottom radii, flange width and the wall inclination angle.
It has the advantage of being easy to prepare [6, 7], relatively cheap [7], and exhibits superplastic properties at room temperature [7].
The lower the thinning factor, the greater is the deviation in thickness distribution along the mid-section profile.
Online since: October 2015
Authors: Givanildo Azeredo, Aline Figueirêdo Nóbrega de Azerêdo, Arnaldo Manoel Pereira Carneiro
Properties like flexural and compressive strengths, water absorbed capillarity and loss mass variation were studied in mortars.
The main objective of this research is investigate the influence of these phases in hardened properties of mortars.
Mechanical Tests Procedures.
Hardened Properties of Lime Based Mortars Produced From Kaolin Wastes.
F., Kaolinitic calcined clays: Factors affecting its performance as pozzolans.
The main objective of this research is investigate the influence of these phases in hardened properties of mortars.
Mechanical Tests Procedures.
Hardened Properties of Lime Based Mortars Produced From Kaolin Wastes.
F., Kaolinitic calcined clays: Factors affecting its performance as pozzolans.
Online since: November 2024
Authors: I Made Joni, Camellia Panatarani, Ferry Faizal, Revani Khoyyiroh Hana Khotimah Widjaya
By modifying the net diameter of the biocarrier's design, we aimed to investigate the impact of different pore sizes on these factors.
Specific properties were tested in water, i.e., durability.
This comprehensive examination of mass distributions enhances our grasp of the factors influencing the physical characteristics of these biocarriers.
The remarkable durability of the biocarriers can be attributed to several factors.
Loskot et al., “Influence of print speed on the microstructure, morphology, and mechanical properties of 3D-printed PETG products,” Polym Test, vol. 123, Jun. 2023, doi: 10.1016/j.polymertesting.2023.108055
Specific properties were tested in water, i.e., durability.
This comprehensive examination of mass distributions enhances our grasp of the factors influencing the physical characteristics of these biocarriers.
The remarkable durability of the biocarriers can be attributed to several factors.
Loskot et al., “Influence of print speed on the microstructure, morphology, and mechanical properties of 3D-printed PETG products,” Polym Test, vol. 123, Jun. 2023, doi: 10.1016/j.polymertesting.2023.108055
Online since: March 2022
Authors: Yu Feng Sun, Jia Fei Wang, Ting Chun Hu, Yi Yun Xi
The external temperature load is the most significant factor affecting the film temperature sensor.
Since the membrane structure is greatly affected by the blade base, the stress on the blade can be equivalent to the stress in the membrane structure, and then the value can be corrected by simulation.
Size parameters Material Length Width Thickness SiO2 80[mm] 5[mm] 1[μm] NiCr/NiSi 0.3[ μm] SiO2 2[ μm] Ta2O5 0.5[ μm] Al2O3 1[ μm] NiCrAlY 1[ μm] Alloy substrate 100[mm] 50[mm] 10[ μm] The properties of various materials used in the model are shown in Table 2: Table 2.
Material properties Material Thermal expansion coefficient [10-6·K-1] Density [kg·m-3] Elastic Modulus [Gpa ] Poisson's ratio Alloy substrate 14.90 8540 144 0.27 NiCrAlY 12.70 8180 206.8 0.21 Al2O3 8.60 3965 400 0.22 Ta2O5 3.60 8400 140 0.23 SiO2 0.50 2500 73 0.20 NiCr 17.0 8100 206 0.30 ANSYS workbench is used for modeling.
Electro-Mechanical Engineering, 2018, 34(01):1-7
Since the membrane structure is greatly affected by the blade base, the stress on the blade can be equivalent to the stress in the membrane structure, and then the value can be corrected by simulation.
Size parameters Material Length Width Thickness SiO2 80[mm] 5[mm] 1[μm] NiCr/NiSi 0.3[ μm] SiO2 2[ μm] Ta2O5 0.5[ μm] Al2O3 1[ μm] NiCrAlY 1[ μm] Alloy substrate 100[mm] 50[mm] 10[ μm] The properties of various materials used in the model are shown in Table 2: Table 2.
Material properties Material Thermal expansion coefficient [10-6·K-1] Density [kg·m-3] Elastic Modulus [Gpa ] Poisson's ratio Alloy substrate 14.90 8540 144 0.27 NiCrAlY 12.70 8180 206.8 0.21 Al2O3 8.60 3965 400 0.22 Ta2O5 3.60 8400 140 0.23 SiO2 0.50 2500 73 0.20 NiCr 17.0 8100 206 0.30 ANSYS workbench is used for modeling.
Electro-Mechanical Engineering, 2018, 34(01):1-7
Online since: July 2011
Authors: Qian Ming Yang, Re Feng So, Xiao Ming Wang
Finite Element Analysis of Hydro-Viscous Drive Main Transmission
Shaft Using ANSYS
Re-feng So1,a, Qian-ming Yang2,b and Xiao-ming Wang2,c
1Department of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Taian, China
2College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, China
aSrf7788@163.com, byqm8396@sdust.edu.cn, cwxm0615@163.com
Keywords: Hydro-Viscous Drive; main drive shaft; finite element analysis; ANSYS; stress and stain
Abstract: The main drive shaft is one of the key component of the Hydro-Viscous Drive device.
Another character of Hydro-Viscous Drive based on transmission theory of viscous liquid is, when the active and passive friction disk makes the rotary motion under the Newtonian fluid shear friction force, also affected by load cylinder of the role of axial thrust.
All these mention above show that taking the initiative for the effective analysis of the mechanical axis of the shaft designed are be necessary for guaranteeing a reasonable structure as the driving shaft itself mechanics and the functional requirements of the hydraulic power transmission and the structural design more complex.
Selects third theory of strength [2] to carry on the intensity examination: where:—Axis computation stress (MPa); — Referring factor; —Reverse shear stress (MPa); —Axis anti-curved section coefficient (mm3) According to the metal material of the axis, the admissible bending stress of 40Cr is MPa, while , the driveshaft is safe.
Taking into account the complexity of the driving shaft , precision and computer resources as well as other factors, chooses 8 nodes solid45 tetrahedron unit model during Analysis process, uses 3 levels of precisions the SmartSize intelligence grid divisions, produces 138138 units finally, 28758 node grids, As shown in Figure 5.
Another character of Hydro-Viscous Drive based on transmission theory of viscous liquid is, when the active and passive friction disk makes the rotary motion under the Newtonian fluid shear friction force, also affected by load cylinder of the role of axial thrust.
All these mention above show that taking the initiative for the effective analysis of the mechanical axis of the shaft designed are be necessary for guaranteeing a reasonable structure as the driving shaft itself mechanics and the functional requirements of the hydraulic power transmission and the structural design more complex.
Selects third theory of strength [2] to carry on the intensity examination: where:—Axis computation stress (MPa); — Referring factor; —Reverse shear stress (MPa); —Axis anti-curved section coefficient (mm3) According to the metal material of the axis, the admissible bending stress of 40Cr is MPa, while , the driveshaft is safe.
Taking into account the complexity of the driving shaft , precision and computer resources as well as other factors, chooses 8 nodes solid45 tetrahedron unit model during Analysis process, uses 3 levels of precisions the SmartSize intelligence grid divisions, produces 138138 units finally, 28758 node grids, As shown in Figure 5.
Online since: May 2012
Authors: Dong Fu Zhao, Zuo Kai You, Dong Dong Liu
Life and property damage caused by fire every year is enormous.
The test conditions and other factors are also taken into account.
So there is unrecoverable damage in the beams which alters the microstructure of concrete beam, thus affects the macro-mechanical properties of concrete beam.
The test conditions and other factors are also taken into account.
So there is unrecoverable damage in the beams which alters the microstructure of concrete beam, thus affects the macro-mechanical properties of concrete beam.
Online since: September 2013
Authors: Gang Jun Gong, Jue Li, Yao Lu, Bing Qi, Xiang Jun Liu
What’s more, if there is any accident, it may cause serious loss of life and property.
As above, these can be the important factors to affect the subsequent construction or even the development of UHV power grid.
Recent years, the security monitoring of construction site including safety management of construction, security of person, money and property, need to use high-tech means to enhance preparedness.
The resources at the construction site are various, including materials, vehicles, mechanical equipment, and constructors, etc.
Thus it can guarantee the security of person and property, and provide visual and comprehensive information of resources.
As above, these can be the important factors to affect the subsequent construction or even the development of UHV power grid.
Recent years, the security monitoring of construction site including safety management of construction, security of person, money and property, need to use high-tech means to enhance preparedness.
The resources at the construction site are various, including materials, vehicles, mechanical equipment, and constructors, etc.
Thus it can guarantee the security of person and property, and provide visual and comprehensive information of resources.