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Online since: November 2013
Authors: Chun Gui Du, Ren Li, Zhe Wang, Hong Wei Yu, Chun De Jin
The dynamic mechanical properties of radial and chordwise bamboo pieces were tested by dynamic mechanical analysis(DMA).
Chordwise curtain plybamboo and radial curtain plybamboo are mainly used for the concrete form, their mechanical properties will be affected with the changes of using environment, such as temperature, humidity, and external force.
Therefore, their dynamic mechanical properties can more reflect the real situation of its using conditions than the static mechanical properties.
The dynamic mechanical properties of the basic unit of curtain plybamboo is one of major factors for affecting its the dynamic mechanical properties.
Dynamic mechanical properties were tested by 3 point bending at 30℃-250℃, and the heating rate was 5℃/min, and the frequency was 1Hz.
Chordwise curtain plybamboo and radial curtain plybamboo are mainly used for the concrete form, their mechanical properties will be affected with the changes of using environment, such as temperature, humidity, and external force.
Therefore, their dynamic mechanical properties can more reflect the real situation of its using conditions than the static mechanical properties.
The dynamic mechanical properties of the basic unit of curtain plybamboo is one of major factors for affecting its the dynamic mechanical properties.
Dynamic mechanical properties were tested by 3 point bending at 30℃-250℃, and the heating rate was 5℃/min, and the frequency was 1Hz.
Online since: August 2013
Authors: Ying Wang, Ying Wang
Effect of Corrosion on Mechanical Properties of Rebar HRB335
Ying Wang, Ping Li a
Department of Civil Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, China
aeappol@163.com
Key Words: Rebar HRB335, Corrosion behavior, Corrosion rate, Mechanical properties
Abstract: The corrosion behavior of rebar HRB335 in simulated concrete pore solution (3.5 wt.% NaCl solution) and the tensile mechanical properties before and after corrosion were investigated.
The research on rebar corrosion and its effect on the mechanical properties of rebar are increasing [7-10].
The cylindrical samples (Φ14mm×450mm) are used for corrosion rate measuring and mechanical properties tests.
These will affect the strength properties of reinforcing bar.
Maybe the effect of stress concentration on each strength property is not familiar, or there can be other affecting factors.
The research on rebar corrosion and its effect on the mechanical properties of rebar are increasing [7-10].
The cylindrical samples (Φ14mm×450mm) are used for corrosion rate measuring and mechanical properties tests.
These will affect the strength properties of reinforcing bar.
Maybe the effect of stress concentration on each strength property is not familiar, or there can be other affecting factors.
Online since: June 2014
Authors: Ya Li Sun
The mechanical properties of graphite is very low, it is a great influence on the mechanical properties of gray cast iron on shape, size, number and distribution of graphite.
The test shows that, the increasing of carbon content can effectively improve the mechanical properties of the casting.
In the casting process, excepting the carbon equivalent, there are other factors affecting the properties of casting.
For this test, the carbon content is a major factor, but under different circumstances, the main factor affecting on the performance of the casting is different.
We need to find the main influence factors according to the actual situation and obtain high strength and appropriate hardness gray cast iron, thus improve greatly the mechanical properties of gray cast iron.
The test shows that, the increasing of carbon content can effectively improve the mechanical properties of the casting.
In the casting process, excepting the carbon equivalent, there are other factors affecting the properties of casting.
For this test, the carbon content is a major factor, but under different circumstances, the main factor affecting on the performance of the casting is different.
We need to find the main influence factors according to the actual situation and obtain high strength and appropriate hardness gray cast iron, thus improve greatly the mechanical properties of gray cast iron.
Online since: February 2022
Authors: Kamil R. Muratov, Vitaly F. Novikov, Roman A. Sokolov
Dispersion of the Steel Structure and its Effect on Magnetic and Mechanical Properties of Steel
Roman A.
Often, for operational control of mechanical properties, magnetic parameters are used such as, for example, the coercive force.
Both mechanical and magnetic properties of steel are associated precisely with the structure of the material.
One of the main properties to which stringent requirements must be imposed are mechanical properties of the material, which determine its service life.
This connection can be used to develop a non-destructive method for monitoring the mechanical properties of steel.
Often, for operational control of mechanical properties, magnetic parameters are used such as, for example, the coercive force.
Both mechanical and magnetic properties of steel are associated precisely with the structure of the material.
One of the main properties to which stringent requirements must be imposed are mechanical properties of the material, which determine its service life.
This connection can be used to develop a non-destructive method for monitoring the mechanical properties of steel.
Online since: December 2014
Authors: Jozef Živčák, Radovan Hudák, Mária Mihaliková, Irenej Poláček, Lucia Fedorová
Detection of mechanical properties enables the assessment of possible replacement of commercial manufacture with the DMLS manufacture.
On the basis of the ASTM F1717 standards providing the essentials for the comparison of mechanical properties of spinal systems, twenty mechanical compression tests were carried out.
Mechanical properties of both bilateral systems in compression are comparable.
K. ; Ebraheim, N.A; Biyani, A; Rengachary,S; Faizan,A (2005): Role of mechanical factors in the evaluation of pedicle screw type spinal fixation devices.
K. ; Ebraheim, N.A; Biyani, A; Rengachary,S; Faizan,A: Role of mechanical factors in the evaluation of pedicle screw type spinal fixation devices.
On the basis of the ASTM F1717 standards providing the essentials for the comparison of mechanical properties of spinal systems, twenty mechanical compression tests were carried out.
Mechanical properties of both bilateral systems in compression are comparable.
K. ; Ebraheim, N.A; Biyani, A; Rengachary,S; Faizan,A (2005): Role of mechanical factors in the evaluation of pedicle screw type spinal fixation devices.
K. ; Ebraheim, N.A; Biyani, A; Rengachary,S; Faizan,A: Role of mechanical factors in the evaluation of pedicle screw type spinal fixation devices.
Online since: July 2011
Authors: Xiao Qian Qi, Xu Ping Zhang
Mechanical and Friction-Wear Properties of MoS2 Al-matrix Self-lubricating
Xiaoqian Qi1,a, Xuping Zhang2,b
1,2College of Material Science and Engineering,China University of Mining and Technology, China
aqixiaoqian1987@126.com , bxpzhang@cumt.edu.cn
Keywords:Al-matrix self-lubricating materials, MoS2, friction coefficient, wear rate, mechanical properties
Abstract.
Addition of MoS2 can reduce friction coefficient, Fe is used to improve the mechanical properties.
Si is an important affecting factor for hardness.This is due to a new solid phases-Al3.21Si0.47.
Si is an important affecting factor for hardness.
Optimization of mechanical and chemical properties of sulphuric anodized aluminium using statistical experimental methods[J].
Addition of MoS2 can reduce friction coefficient, Fe is used to improve the mechanical properties.
Si is an important affecting factor for hardness.This is due to a new solid phases-Al3.21Si0.47.
Si is an important affecting factor for hardness.
Optimization of mechanical and chemical properties of sulphuric anodized aluminium using statistical experimental methods[J].
Online since: July 2013
Authors: Ossama Dreibati, Nikolay Doynov, Ralf Ossenbrink, Vesselin Michailov, Gancho Genchev
The paper presents a numerical and experimental approach for the quantification of the thermo-mechanical properties in multi-pass weld’s heat affected zone (HAZ) of low alloy steel “S355J2+N”.
This affects in a complex way the microstructure transformations and thereby the local thermo-mechanical properties.
The aim of the presented work is the experimental determination of the thermo-mechanical material properties during multi weld thermal exposure.
Furthermore, the work identifies the relevant influence factors on the microstructure transformations and thermo-mechanical properties of the HAZ of multi-pass welded joints.
Summary This paper presents some results of an investigation of the thermo-mechanical properties of the HAZ which experienced multi-pass welds.
This affects in a complex way the microstructure transformations and thereby the local thermo-mechanical properties.
The aim of the presented work is the experimental determination of the thermo-mechanical material properties during multi weld thermal exposure.
Furthermore, the work identifies the relevant influence factors on the microstructure transformations and thermo-mechanical properties of the HAZ of multi-pass welded joints.
Summary This paper presents some results of an investigation of the thermo-mechanical properties of the HAZ which experienced multi-pass welds.
Online since: September 2014
Authors: Yao Jun Zhang, Li Wang
Many studies show that the type and properties of aggregates for concrete mechanical properties of high-temperature research has important significance.
And because the factors that affect the mechanical properties of concrete at high temperatures many, therefore, to understand the high temperature properties of concrete needed to carry out further experimental study.
Taken together these problems still exist for the study of high-temperature mechanical properties of concrete: (1) Affect mechanical properties of concrete by many factors, such as mixing ratio, the level of construction, maintenance conditions, loading methods, even the same batch have considerable differences between the mechanical properties of concrete will be to carry out changes in the mechanical properties after high temperature research needs large quantities of experimental data statistics.
The study considers aggregate internal defects for high temperature mechanical properties of concrete fewer.
The coarse aggregate ofconcrete [J]., affect the heat burst properties of high strength concrete in 2011 April.
And because the factors that affect the mechanical properties of concrete at high temperatures many, therefore, to understand the high temperature properties of concrete needed to carry out further experimental study.
Taken together these problems still exist for the study of high-temperature mechanical properties of concrete: (1) Affect mechanical properties of concrete by many factors, such as mixing ratio, the level of construction, maintenance conditions, loading methods, even the same batch have considerable differences between the mechanical properties of concrete will be to carry out changes in the mechanical properties after high temperature research needs large quantities of experimental data statistics.
The study considers aggregate internal defects for high temperature mechanical properties of concrete fewer.
The coarse aggregate ofconcrete [J]., affect the heat burst properties of high strength concrete in 2011 April.
Online since: January 2012
Authors: Cemail Aksel
The variations and developments with the reasons on the mechanical properties of MgO-MgAl2O4 and MgO-ZnO-Al2O3 composite refractories were examined and thermal parameters affecting the durability of composites at high temperatures were investigated.
The relationships between mechanical properties and structural variations for different compositions and the factors affecting this connection were investigated.
With the additions of various amounts of ZnO-Al2O3 to MgO, significant improvements were achieved on both mechanical properties and R-Rst parameters of in-situ formed M-S-ZnAl2O4 composite refractories, compared to MgO-MgAl2O4 materials containing preformed spinel, by factors of up to 3.6 and 2.0, respectively.
In this study, the relationships between the mechanisms causing improvement on the mechanical properties of composite refractories and microstructural changes and parameters affecting these were investigated in detail and explained with the reasons.
These identified microstructural factors are associated with the improvement occurring in the mechanical properties of ZnO-Al2O3 added composite refractories.
The relationships between mechanical properties and structural variations for different compositions and the factors affecting this connection were investigated.
With the additions of various amounts of ZnO-Al2O3 to MgO, significant improvements were achieved on both mechanical properties and R-Rst parameters of in-situ formed M-S-ZnAl2O4 composite refractories, compared to MgO-MgAl2O4 materials containing preformed spinel, by factors of up to 3.6 and 2.0, respectively.
In this study, the relationships between the mechanisms causing improvement on the mechanical properties of composite refractories and microstructural changes and parameters affecting these were investigated in detail and explained with the reasons.
These identified microstructural factors are associated with the improvement occurring in the mechanical properties of ZnO-Al2O3 added composite refractories.
Online since: April 2015
Authors: R. Rodriguez-Laviada, E. Perez-Pacheco, Carlos Rolando Ríos-Soberanis
arolando@cicy.mx, brlaviada@cicy.mx, ceperez@itescam.edu.mx
Keywords: Textile architecture; geotubes; mechanical properties; polymers.
There are many environmental factors, which influence aging mechanisms of geotextiles such as UV radiation, temperature, humidity, etc.
Mechanical properties: Figure 6 presents stress-strain curves of the three textiles tested in tensile mode.
All the textiles studied in this work achieved excellent mechanical properties at 90o (transverse).
The effect of artificial environmental photodegradation and humidity affected significantly the mechanical behavior of textiles by gradually diminishing its properties.
There are many environmental factors, which influence aging mechanisms of geotextiles such as UV radiation, temperature, humidity, etc.
Mechanical properties: Figure 6 presents stress-strain curves of the three textiles tested in tensile mode.
All the textiles studied in this work achieved excellent mechanical properties at 90o (transverse).
The effect of artificial environmental photodegradation and humidity affected significantly the mechanical behavior of textiles by gradually diminishing its properties.