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Online since: January 2012
Authors: Shiro Torizuka, S.V.S. Narayana Murty, Eijiro Muramastu
Low-carbon ultrafine-grained steel has excellent cold headability and favorable rolling properties, i.e., excellent formability.
However, for practical applications of these ultrafine grained steels, it is essential to evaluate their mechanical properties and understand the microstructure-mechanical property correlation in detail.
Reduction in area is affected by second phases and inclusions.
(1)Uniform elongation (2)Non - uniform elongation (%) 100 0 0 x S S S RA - = Nominal Strain (3)Reduction in area Fig.1 Three factors regarding formability.
Rolling property All types of steel exhibited favorable rolling properties; no problems were encountered.
However, for practical applications of these ultrafine grained steels, it is essential to evaluate their mechanical properties and understand the microstructure-mechanical property correlation in detail.
Reduction in area is affected by second phases and inclusions.
(1)Uniform elongation (2)Non - uniform elongation (%) 100 0 0 x S S S RA - = Nominal Strain (3)Reduction in area Fig.1 Three factors regarding formability.
Rolling property All types of steel exhibited favorable rolling properties; no problems were encountered.
Online since: January 2013
Authors: Wen Jia Chen, Li Jun Shi, Lu Yang Li, Yan Zhong He, Lan Lei Zhao
The virtual prototype modeling research of a wind tunnel test platform with member flexibility
Lanlei Zhao, Wenjia Chen*, Lijun Shi, Luyang Li and Yanzhong He
College of Mechanical Engineering, Yangzhou University, Yangzhou, 225127, P.R.
The reason why the platform adopts to the combination of serial mechanism and parallel mechanism is that the integration of two configurations can give full play to the complementary relation of the characterization of the structures and properties, so that they can coordinate with each other to meet the requirement of complex motion of the test model.
Due to the existence of elastic vibration of the system, it will inevitably affect the performance quality of rigid body system.
Owing to the testing model has a certain impact and vibration in the simulation movement, so the inhibition of the impact and vibration is an important factor for reliable operation of the simulation test.
Cleghorn: Investigation of axial forces on dynamic properties of a flexible 3-PRR planar parallel manipulator moving with high speed,Robot.
The reason why the platform adopts to the combination of serial mechanism and parallel mechanism is that the integration of two configurations can give full play to the complementary relation of the characterization of the structures and properties, so that they can coordinate with each other to meet the requirement of complex motion of the test model.
Due to the existence of elastic vibration of the system, it will inevitably affect the performance quality of rigid body system.
Owing to the testing model has a certain impact and vibration in the simulation movement, so the inhibition of the impact and vibration is an important factor for reliable operation of the simulation test.
Cleghorn: Investigation of axial forces on dynamic properties of a flexible 3-PRR planar parallel manipulator moving with high speed,Robot.
Online since: March 2022
Authors: Fadzil Mat Yahaya, Mohammad Amirulkhairi Zubir, Aizat Alias
Generally, for a design load the span and the thickness of the concrete are the crucial factors that need to be considered for the purpose of construction.
For cross section properties, [15] and [16] did investigation on different profiled steel decking that include trapezoidal profile and dovetailed profile.
Materials and Sample Preparation Properties of Profiled Steel Decking.
This deformation limit is include as one of the important conditions during the construction phase because if this limit exceeded it could affect the serviceability of the composite slabs system.
Concrete Properties and Pouring Procedure.
For cross section properties, [15] and [16] did investigation on different profiled steel decking that include trapezoidal profile and dovetailed profile.
Materials and Sample Preparation Properties of Profiled Steel Decking.
This deformation limit is include as one of the important conditions during the construction phase because if this limit exceeded it could affect the serviceability of the composite slabs system.
Concrete Properties and Pouring Procedure.
Online since: September 2011
Authors: Xiao Dun Wang, Zhi Hua Chen, Qian Zhang
The special function or property can be imitated and applied in building’s function, this can be called functional bionics.
The heads of sunflowers can rotate with the moving of the sun; the leaves of some plants grow around the stem with spiral shape [3], all these properties make plants absorb the maximal sun’s heat to do photosynthesis and maintain the growth of its own.
The location of the first bifurcation point of the trunk of the tree, the ratio of the upper and lower bifurcation, the number of branch at the same point, the angle of each branch; when the storm started some trees collapse at the first blow, while others hold up; when the wind and rain started some branch broke off the tree, while others are unaffected; all these factors affect trees’ height, the lush level of the branches and leaves and the ability of resisting disaster at the same grow condition.
If we use the growth method of tree to find form of structure, the structure will exhibit better mechanical property under load to reduce the harmful effects of disaster on the structure, protect our lives and property.
The heads of sunflowers can rotate with the moving of the sun; the leaves of some plants grow around the stem with spiral shape [3], all these properties make plants absorb the maximal sun’s heat to do photosynthesis and maintain the growth of its own.
The location of the first bifurcation point of the trunk of the tree, the ratio of the upper and lower bifurcation, the number of branch at the same point, the angle of each branch; when the storm started some trees collapse at the first blow, while others hold up; when the wind and rain started some branch broke off the tree, while others are unaffected; all these factors affect trees’ height, the lush level of the branches and leaves and the ability of resisting disaster at the same grow condition.
If we use the growth method of tree to find form of structure, the structure will exhibit better mechanical property under load to reduce the harmful effects of disaster on the structure, protect our lives and property.
Online since: January 2022
Authors: Khairul Nizar Ismail, Nur Afifah Mohd Khairuddin, Fathin Elliana Ja'afar, Sukhairi Ahmad
The objectives was to analyze the effect of different amount of gypsum in ordinary Portland cement, to study the physical and mechanical properties of clinker and gypsum and to compare the compressive strength of mortar with different amount of gypsum.
Physical properties also were obtained in this research such as specific gravity.
Too much amount of gypsum will affect setting time of mortar.
Specific gravity, which is similar to density and viscosity, is an important property for cement.
It is one of the factors that influence cement density.
Physical properties also were obtained in this research such as specific gravity.
Too much amount of gypsum will affect setting time of mortar.
Specific gravity, which is similar to density and viscosity, is an important property for cement.
It is one of the factors that influence cement density.
Online since: February 2013
Authors: Yue Jun Li, Zeng Guang Li, Lan Gui
This type of soil is classified as low liquid-limit clay, of which the basic physical and mechanical properties are listed in Table 1.
Table 1 Basic physical and mechanical properties of selected soil PH Value Liquid limit (%) Plastic limit (%) Plasticity index Maximum dry density (g/cm3) Optimum water content (%) 6.9 39.9 20.8 19.1 1.673 18.1% (2) Curing agent: TerraZyme is classified as a kind of soil solidification agent of bio-enzyme.
Field tests of TerraZyme solidification soil In order to examine the road performance of TerraZyme solidification soil and validate the application feasibility of TerraZyme solidification soil in road construction practice, the 3 km test road was constructed to examine the effect factors on construction quality and service performance of TerraZyme solidification soil.
Fig. 14 Statistical diagram of compaction degree and frequency Effect of site rolling times on compaction degree Compaction degree is the key factor which affects the strength and stability of subgrade.
Study on the Properties of Roads about EN-1 Soil Condensate [D].
Table 1 Basic physical and mechanical properties of selected soil PH Value Liquid limit (%) Plastic limit (%) Plasticity index Maximum dry density (g/cm3) Optimum water content (%) 6.9 39.9 20.8 19.1 1.673 18.1% (2) Curing agent: TerraZyme is classified as a kind of soil solidification agent of bio-enzyme.
Field tests of TerraZyme solidification soil In order to examine the road performance of TerraZyme solidification soil and validate the application feasibility of TerraZyme solidification soil in road construction practice, the 3 km test road was constructed to examine the effect factors on construction quality and service performance of TerraZyme solidification soil.
Fig. 14 Statistical diagram of compaction degree and frequency Effect of site rolling times on compaction degree Compaction degree is the key factor which affects the strength and stability of subgrade.
Study on the Properties of Roads about EN-1 Soil Condensate [D].
Online since: January 2016
Authors: Jun Shinozuka, Habibah binti Jaharadak
Measurement of the temperature distribution at the tool-chip interface by using a cutting tool with seven pairs of built-in micro Cu/Ni thermocouples
Jun Shinozuka1, a *, Habibah Binti JAHARADAK 2,b
1Department of Mechanical Engineering, Yokohama National University, Japan
2Graduate School of Engineering, Yokohama National University, Japan
a*jshinozu@ynu.ac.jp, bjaharadak-habibah-yp@ynu.jp
Keywords: cutting, temperature, micro thermocouple, ultrasonic machining, electroless plating, electro plating, ion plating
Abstract.
Introduction The tool wear rate is strongly affected by temperature.
One of the crucial functions of the additives is to promote the formation of a certain film at the tool-chip interface on the tool face, which improves the tribological property at the interface.
The formation of the film at the tool-chip interface depends strongly on temperature because the thermo-chemical reaction is the principal factor for the formation of intermetallic compounds.
[9] Network Database System for Thermophysical Property Data on http://tpds.db.aist.go.jp/
Introduction The tool wear rate is strongly affected by temperature.
One of the crucial functions of the additives is to promote the formation of a certain film at the tool-chip interface on the tool face, which improves the tribological property at the interface.
The formation of the film at the tool-chip interface depends strongly on temperature because the thermo-chemical reaction is the principal factor for the formation of intermetallic compounds.
[9] Network Database System for Thermophysical Property Data on http://tpds.db.aist.go.jp/
Online since: February 2013
Authors: Li Bao An, Yan Yan Liu, Shao Hua Zhen
Advances in Numerical and Experimental Study of Dielectrophoretic Assembly of Carbon Nanotubes
Shaohua Zhena, Libao Anb,* and Yanyan Liuc
College of Mechanical Engineering, Hebei Provincial Key Laboratory of Inorganic Nonmetallic Materials, Hebei United University, Tangshan 063009, Hebei, China
azhen_shaohua@163.com, b,*lan@heuu.edu.cn, cliu.yan0207@163.com
Keywords: Carbon nanotubes, Dielectrophoresis, Assembly, Parameter.
The review shows that the magnitude of the applied voltage affects the DEP force and the number of deposited CNTs.
Introduction As a new type of materials, carbon nanotubes (CNTs) have been studied for various applications in science and engineering fields such as electronics, biology, and medicine, due to their excellent electrical, mechanical and thermal properties [1].
Taking into account the ohmic losses of the interface between the particle and medium, for an applied AC field, the time averaged force is given by [12] , (2) , (3) where r is the radius of the particle; l is the longest dimension of the particle; is the permittivity of the particle; is the permittivity of the medium; is the Clausius-Mossotti factor which is related to the complex permittivity of both the particle and the medium.
The review shows that the magnitude of the applied voltage affects the DEP force and the number of deposited CNTs.
Introduction As a new type of materials, carbon nanotubes (CNTs) have been studied for various applications in science and engineering fields such as electronics, biology, and medicine, due to their excellent electrical, mechanical and thermal properties [1].
Taking into account the ohmic losses of the interface between the particle and medium, for an applied AC field, the time averaged force is given by [12] , (2) , (3) where r is the radius of the particle; l is the longest dimension of the particle; is the permittivity of the particle; is the permittivity of the medium; is the Clausius-Mossotti factor which is related to the complex permittivity of both the particle and the medium.
Online since: June 2021
Authors: Zhao Ran Zheng, Kang Yuan
The σ and μ phases belonged to topologically-closed packed (TCP) phases which were brittle and dangerous for the alloys’ mechanical property.
Mismatch between the simulation and experiment results existed, but they semi-quantitatively matched, especially when considering other un-included factors such as local composition deviation and oxidation/interdiffusion phenomenon.
Fig. 10 gives thermodynamic calculation on phase fractions of the MCrAlY coating with different Al concentration at different temperature, which can simulate how Al depletion affected the microstructure during oxidation.
Mismatch between the simulation and experiment results existed, but they semi-quantitatively matched, especially when considering other un-included factors such as local composition deviation and oxidation/interdiffusion phenomenon.
Fig. 10 gives thermodynamic calculation on phase fractions of the MCrAlY coating with different Al concentration at different temperature, which can simulate how Al depletion affected the microstructure during oxidation.
Online since: July 2012
Authors: Wen Lue Chen, Zhi Hua Hu, Jie Feng Lin, Jian Kun Shun
Both the electronic payment, online securities, Internet transactions, electronic contracts, online intellectual property office or online, in security, electronic seal technology means a better choice.
To ensure security, the watermark generation and the introduction of electronic seal verification process, to seal the image in the visual effects do not affect the premise, will recognize the identity of the signature stamp of data hidden in the picture, creating an electronic stamp; verification by comparing the The extraction of hidden data and the difference between the original data to determine the authenticity of the seal.
Beijing: Mechanical Industry(2009) , in press
[8] W.Xu: Library security features and its influencing factors.
To ensure security, the watermark generation and the introduction of electronic seal verification process, to seal the image in the visual effects do not affect the premise, will recognize the identity of the signature stamp of data hidden in the picture, creating an electronic stamp; verification by comparing the The extraction of hidden data and the difference between the original data to determine the authenticity of the seal.
Beijing: Mechanical Industry(2009) , in press
[8] W.Xu: Library security features and its influencing factors.